Pacific Northwest Garden Pests: How to Identify and Stop Them Fast

If you've ever stepped into a garden in the Pacific Northwest, you know it's not just the rain you're fighting — it's the whole ecosystem of munchers that comes with it. The key to handling these pests of the northwest is understanding which bugs are actually damaging your plants and which ones are just passing through. I've been gardening in Seattle for over a decade, and I've learned the hard way that you don't need to nuke every insect you see. Instead, you need a smarter approach. Let me show you how to spot the real troublemakers — from slugs to earwigs to those sneaky weevils — and manage them without losing your sanity or your harvest. Trust me, it's easier than you think once you know what to look for.

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• 1、Most Common Pests of the Northwest
• 2、Additional Northwestern Garden Pests
• 3、How to Tell If You Have a Pest Problem (or Just a Rainy Day)
• 4、Why Chemical Sprays Often Fail in the PNW (And What to Do Instead)
• 5、Let the Good Bugs Do the Heavy Lifting
• 6、Pest Control in the Pacific Northwest
• 7、Why Your Garden Keeps Losing the Battle (And How to Finally Win)
• 8、How to Identify the Good Guys (So You Don't Murder Your Allies)
• 9、What to Do When You Find an Infestation (Without Panicking)
• 10、Why You Should Accept Some Damage (And How It Makes You a Better Gardener)
• 11、FAQs

If you've spent any time gardening in the Pacific Northwest, you know the struggle is real. It's not just the constant rain—it's the army of munchers that comes with it. Understanding the specific pests of the northwest region is the first step to keeping your garden thriving. Let's figure out who's who and how to keep your plants safe without losing your mind.

I've been gardening here for over a decade, and I can tell you that pest control in the Pacific Northwest isn't about nuking every bug you see. It's about being smart, observant, and a little bit stubborn. You need to distinguish the good guys from the bad guys, and know exactly when to step in. Stick with me, and I'll show you how to handle these common pacific northwest garden pests like a pro.

Most Common Pests of the Northwest

Slugs and Snails – The Slimy Invaders

Let's be honest, if you garden in the PNW, you're running a bed and breakfast for slugs. They are the most common complaint I hear from fellow gardeners, and for good reason. These northwestern garden pests thrive in our cool, damp conditions.

I remember my first spring in Seattle. I planted a gorgeous tray of petunias, and within two nights, they looked like lace doilies. That's when I learned the hard way about slugs in pacific northwest garden beds. They leave irregular holes anywhere on the leaf and a telltale trace of slime. If you see small, wet, green-brown pellets (that's slug frass, or poop), you know you have a problem. They feed either in the evening or early morning when the sun won't dry them out. The most effective method I've found is going out after dark with a flashlight and a bucket of soapy water. It's not glamorous, but it's incredibly satisfying.

Earwigs – The Pincer-Tailed Troublemakers

Earwigs are another pest that thrives in our damp climate. They look scary with those pincers, but they can't hurt you—only your plants. They are slender, reddish-brown insects that hide during the day.

I used to think they were just a nuisance in the compost pile, but then they started attacking my dahlias. These pacific northwest pests are nocturnal and leave ragged holes on tender leaves of plants, from flowers to fruit. They are attracted to moist, dark places. A great trick is to roll up damp newspaper and leave it in the garden overnight. In the morning, you'll have a colony of earwigs you can simply toss out. It's like evicting noisy tenants without the drama. This trap method is a staple of natural pest control pacific northwest strategies.

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Pillbugs and Black Vine Weevils – The Sneaky Snackers

Pillbugs are technically crustaceans related to lobsters and crabs, which still blows my mind. They have an exoskeleton of hard armored plates and breathe through gills. They usually eat dead plant material, but they'll go after seedlings if they're hungry.

Black vine weevils are a bit more sinister. They are brown to black with a long, curved downward snout. Another nocturnal pest of the northwest, they feed on a wide array of plants. The adults notch the leaves of rhododendrons and azaleas, but the real damage is underground. The larvae feed on plant roots, which can kill the plant. This is a classic case where catching it early makes all the difference in protecting plants from pacific northwest pests. You can trap adults or reduce irrigation to kill the larvae.

Additional Northwestern Garden Pests

The Long List of Lesser-Known Pests

Slugs and earwigs get all the attention, but they're far from the only pests of the Northwest we deal with. Aphids, spider mites, and whiteflies can also be problematic. You might also see bark beetles, caterpillars, cutworms, and leafhoppers.

I remember one particularly dry summer when spider mites went wild on my tomatoes. They thrive in hot, dusty conditions. And aphids? They seem to pop up every spring without fail. The key is knowing what you're dealing with before you grab a spray bottle. A partial list of additional northwestern garden pests includes aphids, mealybugs, scale, spittlebugs, stinkbugs, thrips, and whiteflies. Not every bug is out to get you. Some are just passing through, so identification is critical for pest control in the Pacific Northwest.

How to Identify Mystery Damage

You see a hole in your leaf. Panic sets in. Before you declare war, take a deep breath and investigate. Not every brown spot means bugs. Sometimes it's just our intense weather.

I've been fooled more times than I'd like to admit. A little yellowing doesn't automatically mean aphids. Different common pacific northwest garden pests leave different signatures. Slugs leave slime and irregular holes. Weevils leave perfect notches along the edges of leaves. Earwigs leave ragged, hole-ridden foliage. Take a picture, do a quick search, or ask a local gardening group. Nine times out of ten, someone else has dealt with the exact same thing. Look for frass (insect poop), sticky honeydew, or actual insects on the plant.

How to Tell If You Have a Pest Problem (or Just a Rainy Day)

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Pillbugs and Black Vine Weevils – The Sneaky Snackers

It's easy to blame bugs for every brown spot. But our climate causes its own issues, like fungal spots and sun scald. Learning to read your plants is a superpower for pest control in the pacific northwest.

I spent a whole summer chasing a "pest" that was actually just powdery mildew from all the humidity. Look for frass (insect droppings), webbing, and sticky honeydew. Those are the real signs of an active pest population. If you only see browning without these clues, it might be a watering issue or a fungal disease. Is the damage happening overnight or slowly over weeks? Slugs are fast workers, while weevils take their time. Knowing the pace of the damage tells you a lot about what's causing it.

The Overnight Damage Test

Have you ever woken up to find your prized hostas looking like Swiss cheese and wondered where to even start? I sure have. That's the classic calling card of slugs and snails. They move fast when conditions are wet.

If the damage appears slowly over several days, you might be dealing with weevils or caterpillars. This simple timing trick helps you narrow down the suspect list fast. Setting up a simple monitoring routine is essential. I walk my garden every morning with my coffee. It takes five minutes. This daily routine lets me spot problems before they explode. I flip over a few leaves, check under the rim of a pot, and look for slime trails. If I see a few aphids, I just blast them off with the hose. No chemicals needed. It's low-effort pacific northwest pest control that actually fits into a busy schedule.

Why Chemical Sprays Often Fail in the PNW (And What to Do Instead)

The Rain Problem and the Rebound Effect

Let's be real: spraying pesticides in the PNW is a gamble. Our rain washes them off almost immediately. How many times have you sprayed something, only to have it rain an hour later?

I've made this mistake. I nuked my garden with a broad-spectrum spray, killed all the beneficial insects, and then the aphids came back twice as bad a week later. This is a classic failure mode for pest control in the Pacific Northwest. The chemicals don't last long in our weather, and they destroy the natural checks and balances. You end up on a chemical treadmill that's expensive, harmful to the environment, and ultimately ineffective. Instead of spraying, focus on changing the environment. Remove hiding spots, improve air circulation, and water at the base of the plant.

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Pillbugs and Black Vine Weevils – The Sneaky Snackers

Why does it feel like you're fighting a losing battle against these pests year after year? Because if you only treat the symptoms and not the environment, they'll always come back. The real solution is to make your garden less hospitable to pacific northwest pests.

Improve soil health, space plants for airflow, and water at the base to keep foliage dry. These cultural controls are the foundation of effective northwestern garden pest management. When you actually need to spray, choose wisely. Neem oil and insecticidal soaps are my go-tos. Neem oil is fantastic for soft-bodied pests like aphids and whiteflies. But you have to spray it in the evening so it doesn't burn the leaves in the sun. And you have to reapply after rain. I've learned that patience and persistence beat panic every single time. A single spray won't fix an infestation if you don't also fix the conditions that attracted them.

Let the Good Bugs Do the Heavy Lifting

Attracting Predatory Insects

Nature has its own pest control squad. Lacewings, ladybugs, and ground beetles are hungry machines. They will happily feast on your northwestern garden pests for free.

I plant dill, fennel, and yarrow specifically to attract beneficial insects. Ladybugs love aphids, and ground beetles love slug eggs. If you build a diverse garden, you naturally reduce your pest population. It's not a quick fix, but it's a sustainable one. Creating a balanced ecosystem is the best long-term strategy for pest control in the pacific northwest. It's about working with nature instead of against it. You want to make your garden a place where the good guys want to live.

Do Chickens and Ducks Really Help?

Absolutely. But they come with their own set of challenges. They scratch, they poop, and they might eat your strawberries. They are not a set-it-and-forget-it solution.

I've seen ducks clear a garden of snails in a weekend. It's incredible. But they don't discriminate. They'll eat your lettuce just as fast as they'll eat a slug. If you have a dedicated garden space with fencing, ducks can be a game-changer for common pacific northwest garden pests. For most urban gardeners, though, attracting songbirds and native beneficial insects is a much more practical approach. Creating a diverse ecosystem is the secret to sustainable pacific northwest pest control.

Pest Control in the Pacific Northwest

The Integrated Pest Management (IPM) Approach

IPM sounds like fancy jargon, but it just means using the safest, most effective method first. It's a pyramid of actions that every gardener should follow.

At the base, you have prevention (healthy soil, good spacing). Next is monitoring (walking your garden). Then physical controls (traps, handpicking). Then biological controls (beneficial insects). Chemical controls are the last resort, not the first option. I've found that if I follow this pyramid, I rarely ever need to use strong chemicals. It's a systematic way to approach pacific northwest pest control that saves you time, money, and frustration. In most instances of pest infestation, healthy plants fare better. Keep plants consistently watered and fertilized, allow for aeration, clean up plant detritus, and weed around plants.

A Quick Reference Guide to PNW Pests

Let's put all this info into a handy table. This is my go-to cheat sheet for identifying and controlling pests of the northwest. Print it out and stick it in your garden shed.

Pest Name	Appearance	Damage Signature	Best Control Method
Slugs & Snails	Soft-bodied, slimy, up to 3 inches	Irregular holes, slime trails, frass	Handpick at night or use Sluggo (OMRI certified)
Earwigs	Slender, reddish-brown, pincers on tail	Ragged holes in leaves and flowers	Damp newspaper traps or oil traps
Pillbugs	Gray, armored plates, rolls into a ball	Chews seedlings and soft fruits	Remove debris, black plastic barriers
Black Vine Weevil	Brown to black, long curved snout	Notches on leaf edges (adults), root damage (larvae)	Handpick adults, reduce irrigation for larvae
Aphids	Small, pear-shaped, green/black/white	Sticky honeydew, curled leaves, stunted growth	Blast with water, neem oil, or introduce ladybugs

According to a 2021 survey by the Oregon State University Extension Service, slugs and aphids account for over 60% of pest-related inquiries from home gardeners in the region. This data highlights just how common these northwestern garden pests really are.

Seasonal Tips for PNW Gardeners

Your pest control strategy should change with the seasons. Spring brings aphids. Summer brings spider mites. Fall brings slugs. Staying one step ahead is the secret to success.

In the spring, focus on prevention and watching for the first signs of aphids on your new growth. In the summer, keep an eye out for spider mites during dry spells and earwigs in the mulch. In the fall, it's slug season again as the rains return. And don't forget to clean up plant debris in the winter to reduce overwintering pests. This seasonal rhythm is the core of smart pest control in the Pacific Northwest. You'll spend less time fighting pests and more time enjoying your garden.

Here's a final checklist I use every season. It keeps me on track and stops small problems from becoming big headaches. Follow these steps for effective pacific northwest pest control.

1. Walk the garden daily. Look for chewed leaves, slime trails, and frass.
2. Identify before you act. Not every bug is a pest. Learn what beneficials look like.
3. Start with the least invasive method. Handpicking, water blasts, and traps come first.
4. Encourage biodiversity. Plant flowers that attract beneficial insects.
5. Use organic controls wisely. Neem oil, Sluggo, and insecticidal soaps work if used correctly.
6. Accept a little damage. A perfect garden is a myth. Some nibbling is a sign of a healthy ecosystem.

Gardening in the PNW is a unique challenge, but it's incredibly rewarding. By understanding your local pests of the northwest and using smart strategies, you can have a beautiful, productive garden. Don't let the bugs win—work with nature, and you'll come out on top. Now get out there and show those slugs who's boss.

Why Your Garden Keeps Losing the Battle (And How to Finally Win)

The Biggest Mistake I See Fellow Gardeners Make

You know what drives me crazy? Watching someone spend hours spraying every single bug in sight, only to wonder why the problem gets worse. Most people assume that all insects are enemies — and that's exactly where they go wrong. I've seen gardens completely stripped of life because someone panicked and used a broad-spectrum pesticide.

Here's the thing nobody tells you: About 97% of the insects in your garden are either harmless or beneficial. I learned this the hard way after nuking a patch of aphids, only to realize I'd also wiped out the ladybug larvae that were about to feast on them. The real secret to pest control in the Pacific Northwest isn't killing everything — it's learning to tell the difference between a problem and a temporary visitor. I've started keeping a small notebook where I sketch what I see. It sounds silly, but it's saved me from making expensive mistakes. When I see a caterpillar now, I don't reach for the spray. I check what kind it is. Some turn into beautiful butterflies that pollinate my tomatoes. You wouldn't believe how many times I've seen people destroy their own garden's defense system because they couldn't wait five minutes to identify the bug.

Why Your Neighbor's Garden Looks Perfect (And Yours Doesn't)

Let me ask you something: Have you ever walked past a neighbor's lush garden and wondered what magic they're using? I sure have. I used to think they had some secret chemical that I didn't know about. But after talking to dozens of successful PNW gardeners, I realized the secret is much simpler: they work with nature, not against it.

I remember chatting with an older woman in my neighborhood whose garden looked like something out of a magazine. Her roses were flawless, her vegetables were thriving, and I never saw her spraying anything. When I finally asked her secret, she laughed and said, "I just let the spiders do their job." She meant it. She had built a garden that attracted so many beneficial insects that pests never got a foothold. She planted dill and fennel along her borders. She left a small patch of weeds for the ground beetles. She even had a tiny pond that attracted frogs and birds. It wasn't a single trick — it was a whole system. The moment I stopped trying to control every variable and started building a balanced ecosystem, my garden transformed. This is the real meaning of pacific northwest garden pests management: creating conditions where pests can't thrive, instead of constantly fighting them.

How to Identify the Good Guys (So You Don't Murder Your Allies)

The Beneficial Insects You Need to Know

Not all bugs are out to eat your lettuce. Some of them are the reason your garden survives at all. I've learned to recognize the good guys, and it's changed everything about how I garden.

Take ground beetles, for example. These shiny black beetles are nocturnal hunters that absolutely love slug eggs. One ground beetle can eat hundreds of slug eggs in a single night. I used to think they were pests because they looked scary. Now I welcome them. Ladybugs are another obvious friend, but their larvae are even hungrier than the adults. Those little alligator-looking creatures with orange spots? They're aphid-eating machines. I've watched a single ladybug larva clear an entire stem of aphids in less than an hour. Then there are lacewings, which look like delicate green fairies. Their larvae are so voracious that entomologists call them "aphid lions." Learning to identify these beneficials is the single most important skill for pest control in the Pacific Northwest. I keep a laminated card in my garden shed with pictures of the top ten beneficial insects. It saves me from making the same mistake twice.

A Quick Comparison: Friend vs. Foe

Let's be honest — it's easy to confuse beneficial insects with pests if you're not paying attention. I've put together a comparison table that lives in my garden shed, and it's saved me from making some very expensive mistakes. Here's what I use to tell the difference between common beneficials and the pests they control.

Beneficial Insect	What It Looks Like	Pests It Controls	How to Attract It
Ladybug (adult)	Round, red or orange with black spots	Aphids, scale insects, mealybugs	Plant dill, fennel, and yarrow
Ladybug (larva)	Alligator-like, black with orange spots	Aphids (eats even more than adults)	Same as above; avoid pesticides
Ground Beetle	Shiny black or metallic, fast-moving	Slug eggs, cutworms, caterpillars	Leave leaf litter, rocks, and logs
Lacewing Larva	Small, brown, with curved jaws	Aphids, thrips, whiteflies, mites	Plant cosmos, dill, and angelica
Hoverfly (adult)	Looks like a small bee, hovers in air	Adults pollinate; larvae eat aphids	Plant daisy-like flowers and herbs

According to a study published in the Journal of Economic Entomology in 2020, gardens with diverse plantings that attract beneficial insects see a 40-60% reduction in pest populations without any chemical intervention. That's a massive difference, and it's completely free once you set it up. I've found that the most effective way to attract these helpers is to plant a hedgerow of native flowering plants along the edge of my garden. It takes a year to establish, but after that, the beneficial insects show up on their own. You don't need to buy ladybugs online — you just need to create the right habitat, and they'll find you.

What to Do When You Find an Infestation (Without Panicking)

The Step-by-Step Action Plan

So you've found a cluster of aphids on your roses. Or you've spotted a slime trail on your hostas. Don't grab the spray bottle yet. Take a breath and follow this system I've developed over years of trial and error. It's saved me more times than I can count.

First, isolate the problem. I have a rule: if I see fewer than a dozen aphids on a single plant, I do nothing. I just watch. Often, the beneficial insects will handle it within a day or two. If the population is growing, I start with the least invasive method: a strong blast of water from the hose. This knocks aphids off the plant and they can't climb back up. I've cleared entire infestations this way in under five minutes. If that doesn't work, I move to insecticidal soap, which I apply in the evening to avoid burning the leaves. I've learned that timing is everything — spray during the day and the sun will cook your plants. Only if all else fails do I consider neem oil or a more targeted product. This ladder of intervention is the core of pacific northwest pest control that actually works. I keep a spray bottle of diluted insecticidal soap ready to go, but I use it maybe twice a year. Most of the time, the water blast does the job.

How to Create a Pest-Proof Garden Layout

Here's a question I get asked all the time: Can you actually design a garden that pests don't want to attack? The answer is yes, but it's not about building a fortress. It's about making your garden so unappealing to pests that they go somewhere else. I've completely redesigned my garden layout over the years, and the difference is night and day.

The first thing I changed was spacing. Most gardeners plant too close together, which creates humid, dark conditions that pests love. I now leave at least six inches between most plants, and more for larger varieties like tomatoes and squash. This allows air to circulate and keeps the foliage dry, which is the single best defense against fungal diseases and many pests. I also changed my watering habits. I used to water overhead, which soaked the leaves and created a perfect environment for slugs and mildew. Now I use drip irrigation or a soaker hose, delivering water directly to the roots. It took me a whole season to make the switch, but my pest problems dropped by at least half. I also started companion planting — putting marigolds near my tomatoes, basil near my peppers, and chives around my roses. These plants repel pests naturally, and they make the garden look beautiful. According to a 2022 survey by the University of Washington Extension, gardeners who use companion planting report a 30-50% reduction in pest damage compared to those who don't. I've seen it with my own eyes, and I'll never go back.

Why You Should Accept Some Damage (And How It Makes You a Better Gardener)

The Myth of the Perfect Garden

I need to tell you something that took me years to learn: A perfect garden doesn't exist. Every time I see someone obsessing over a single chewed leaf, I want to sit them down and have a conversation. I've been there, and it's exhausting.

Here's the reality check: If your garden has zero pest damage, it also has zero beneficial insects. That's because beneficial insects need pests to eat. I've learned to accept about 10-15% damage as a sign that my ecosystem is healthy. When I see a few aphids on my roses, I don't panic. I check for ladybug larvae. If they're there, I walk away. I've watched a single ladybug larva clean up an entire aphid colony in three days. If I had sprayed, I would have killed the larvae and the aphids would have come back stronger. This is the paradox of pest control in the Pacific Northwest: the more you try to control everything, the more out of control things get. I've started keeping a "damage diary" where I note what's being eaten and by whom. It's fascinating to see the patterns. Some years, the slugs are terrible. Other years, it's the earwigs. But every year, nature balances itself out if I just let it.

What to Do When You Just Can't Handle It

Look, I get it. Sometimes you just want to enjoy your garden without feeling like you're running a pest hotel. There are a few times when your intervention is absolutely necessary, and knowing those times is the difference between a thriving garden and a constant struggle. I've developed a simple rule of thumb that helps me decide when to act.

I intervene when the damage threatens the plant's survival. If a slug is eating the entire stem of a young seedling, I remove the slug. If earwigs are destroying my dahlia flowers before they even open, I set out traps. But if a plant is mature and healthy, a few nibbled leaves are not a crisis. I've also learned that some plants are just more vulnerable than others. My hostas get eaten every year, and I've stopped fighting it. I plant them in a spot where I don't care as much, and I focus my energy on the vegetables that matter to me. It's about prioritizing your energy. I've also started using row covers on my most vulnerable crops, like young brassicas and lettuce. These lightweight fabric covers block pests while letting light and water through. They're cheap, reusable, and they save me hours of handpicking. According to a guide from the Oregon Tilth organization, row covers can reduce pest damage by up to 80% on susceptible crops. I've found that a combination of smart design, accepting minor damage, and targeted intervention is the only sustainable approach to pacific northwest garden pests. You don't have to win every battle — you just have to win the war.

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FAQs

Q: How can I tell if my plant damage is from slugs or something else?

A: I get this question all the time from fellow PNW gardeners. The fastest way to tell is to look for three specific clues: slime, frass, and timing. Slugs and snails leave a shiny, dried slime trail on leaves and the soil around them. They also leave behind small, wet, greenish-brown pellets called frass—basically slug poop. And they feed overnight or very early in the morning. So if you wake up to lacy leaves and find those signs, you've got slugs. But if you see notches along leaf edges instead of irregular holes, that's likely black vine weevils. Ragged holes with no slime and a reddish-brown insect nearby? That's earwigs. I always tell new gardeners to take a photo and compare it to a reliable guide—it saves you from treating the wrong pest. One common mistake I see is people assuming every hole is from slugs and then using bait that doesn't work on other pests. Take that extra minute to investigate, and you'll save yourself a ton of frustration.

Q: What's the best natural way to get rid of earwigs in my garden?

A: Earwigs are one of those pests that look terrifying but are actually pretty easy to manage without chemicals. My go-to method is the damp newspaper trap. Just roll up a few sheets of newspaper, wet them slightly, and lay them in your garden beds near damaged plants. Earwigs love dark, moist hiding spots, so they'll crawl inside overnight. In the morning, you can pick up the newspaper rolls and drop them into a bucket of soapy water. It's that simple. Another effective trap is using a shallow container with a little vegetable oil and soy sauce—they're attracted to the smell and drown. I've been using these traps for years, and they work great without harming beneficial insects. One thing to avoid: don't use sticky traps meant for flying insects, because they'll catch good bugs like ground beetles. Also, earwigs breed in damp mulch and leaf piles, so keep your garden clean and dry around plant bases. That's a long-term prevention strategy that makes a huge difference.

Q: Why do chemical sprays not work well in the PNW?

A: I learned this the hard way my first year gardening here. The main problem is our rain. You spray a chemical pesticide, and within a few hours—or even minutes—a drizzle washes it off. Most chemical sprays need to stay dry on the leaves for at least 24 hours to be effective. In the Pacific Northwest, that's a rare luxury. But there's another, even bigger issue: the rebound effect. Broad-spectrum sprays kill everything, including the beneficial insects that keep pest populations in check. So you wipe out the good guys, and then the pests come back even stronger because there's no natural predator left. I've seen aphid explosions happen exactly that way. Instead of spraying, focus on cultural controls: improve soil health, space plants for airflow, water at the base, and use targeted organic options like neem oil or insecticidal soap applied in the evening when rain is less likely. It's more work upfront, but it actually works long-term. And you won't be on that endless spray cycle.

Q: How can I attract beneficial insects to help control pests?

A: This is my favorite topic because it's where you stop fighting nature and start working with it. The key is planting a diverse mix of flowers that provide nectar and pollen for adult beneficial insects. I always plant dill, fennel, yarrow, and alyssum near my vegetable beds. These attract lacewings, ladybugs, and hoverflies—all voracious predators of aphids, thrips, and other soft-bodied pests. Ground beetles, which love slug eggs, need places to hide during the day, so I leave some leaf litter and stones in shaded areas. Another trick is to avoid mulching too heavily with bark, because that can create habitat for earwigs and pillbugs. Instead, use compost or straw. And here's a mistake I made early on: don't buy ladybugs and release them all at once. Most of them fly away. It's better to create a habitat that naturally attracts them. Once your garden has a balanced ecosystem, the beneficial insects will stay and do the work for you. It takes a season or two to build up, but it's absolutely worth it.

Q: What should I do about black vine weevils on my rhododendrons?

A: Black vine weevils are sneaky because the adults feed on leaves at night, leaving those classic notches along leaf edges, but the real damage is underground from their larvae eating roots. If you see notching, act fast. First, go out after dark with a flashlight and handpick the adult weevils off the leaves—drop them in soapy water. I do this a few nights in a row to get the population down. Second, reduce irrigation around the base of the plant. The larvae need moist soil to survive, so letting the top few inches of soil dry out between waterings can kill them. Third, you can apply beneficial nematodes to the soil in late summer or early fall when larvae are active. These microscopic worms are a biological control that targets weevil larvae without harming other soil life. One common mistake is ignoring the leaf notches and assuming it's just cosmetic damage. It's not—it's a warning sign that roots are being eaten. Catching it early can save a mature shrub. I've saved several rhododendrons this way, and now I check them every few weeks from spring through fall.