Plant Flowers to Encourage Beneficial Insects and Get Rid of Garden Pests
Short answer: because they turn your garden into a self-balancing ecosystem that needs fewer sprays, suffers fewer outbreaks, and produces more flowers, fruit, and joy. By attracting beneficial insects—and other helpful arthropods like spiders—you’re recruiting a year-round maintenance crew that works for nectar and a little habitat.
By attracting beneficial insects to your garden and supporting their populations, you can help to support the health of your local ecosystem and control pest populations. Think of it as preventive care: build habitat first, and many problems never get big enough to notice.
Summary: Welcome nature’s tiny task force. Beneficial insects suppress pests, boost pollination, and make gardens more resilient—without heavy sprays.
Allies: Lady beetles, lacewings, hoverflies, parasitoid wasps, soldier beetles, spiders, bumblebees & native bees.
How: Plant continuous bloom, add water & shelter, go easy on cleanup and lighting, and follow gentle IPM.
Caution: Avoid broad-spectrum pesticides; spot-treat only if truly needed and time after pollinator hours.
| Why Attract Them? | Natural pest control, improved yields via pollination, richer biodiversity, fewer chemical inputs. |
|---|---|
| Plant Palette (Best Bets) | Umbels (dill, fennel, cilantro), daisies (yarrow, coreopsis, asters), mint family (thyme, oregano, basil), buckwheat, goldenrod, sweet alyssum. |
| Design for Continuous Bloom | Layer early–mid–late seasons so nectar/pollen are available from spring through frost. |
| Native First | Local insects co-evolved with local plants—mix regionally native species wherever possible. Find native plants by region |
| Water & Landing Zones | Shallow saucer with pebbles; refresh often. Flat stones warm up morning flyers. |
| Shelter & Nesting | Keep some hollow stems (8–12 in), a patch of leaf litter, and tufty grasses/sedges for cover. |
| Night Lighting | Use warm, shielded fixtures on timers or motion sensors to reduce disorientation for moths. |
| IPM & Sprays | Scout first; tolerate minor damage. If needed, spot-treat with soap/oil at dusk; avoid broad-spectrum products. |
| Results Timeline | Alyssum & buckwheat draw allies in weeks; structural gains build over seasons as habitat matures. |
| Skip “Release & Forget” | Purchased insects often disperse; lasting success comes from habitat, not one-time releases. |
“Beneficials” are the garden allies that eat pests, pollinate crops, recycle organic matter, and feed wildlife.
They include familiar faces (ladybugs, hoverflies, lacewings, bumblebees) and behind-the-scenes specialists (parasitoid wasps, soldier beetles, tachinid flies). We also count non-insect allies—spiders, predatory mites, and even ground beetles—as part of the same support team.
They’re especially valuable because they practice continuous, targeted control. A lacewing larva doesn’t wipe out every aphid; it trims the population so plants can outgrow damage, which is exactly how healthy ecosystems work. That means fewer boom-and-bust cycles and fewer panicked runs to the spray shelf.
Forget buying boxes of bugs (they often fly away). The lasting solution is food + water + shelter, available most of the year.
Ladybirds are used extensively as biological pest control agents as they feed on Aphids.
Use this as a plug-and-play border along a fence or bed edge. Adjust for your climate and style.
| Season | Anchor Plants | Support & Fillers |
|---|---|---|
| Spring | Achillea (yarrow), Phacelia, calendula | Native violets, prairie smoke, early thyme/oregano blossoms |
| Summer | Sweet alyssum, dill/fennel, cosmos, coreopsis | Borage, buckwheat (successional sowing), coneflower |
| Fall | Asters, goldenrod, late marigolds | Herb re-blooms (oregano/chives), sedums |
Goal: keep at least three species blooming each season. Mix in clumps so natural enemies can find resources quickly.
You don’t need one of everything. Choose what fits your style and climate, then repeat for a cohesive look.
Match allies to your most common headaches:
| Ally | Most Helpful Against | Plants They Love |
|---|---|---|
| Lady beetles (adults & larvae) | Aphids, whiteflies, mites (some species) | Daisy family (asters, yarrow), dill/fennel, marigolds |
| Hoverflies (Syrphidae) | Aphids (larvae), pollination (adults) | Sweet alyssum, buckwheat, coriander blossoms |
| Lacewings | Aphids, thrips, whiteflies, small caterpillars | Cosmos, dill/fennel, coreopsis, asters |
| Parasitoid wasps | Caterpillars, whiteflies, aphids (species-specific) | Umbel flowers (dill, fennel), yarrow, sweet alyssum |
| Soldier beetles | Aphids, caterpillars; pollination support | Goldenrod, hydrangea panicles, native meadows |
| Spiders (not insects, but MVPs!) | General pest suppression (ambush & web builders) | Dense groundcovers, grasses, shrub thickets |
| Bumblebees & native bees | Pollination of berries, gourds, tomatoes, herbs | Clover, bee balm, salvia, lavender, blueberries |
Note on praying mantises: fascinating, but generalist – they eat pests, bees, butterflies, and other beneficial insects. Consider them neutral rather than a top ally to “attract.”
Hoverflies attracted by dill flowers
Beneficial-friendly doesn’t mean messy. The trick is repetition and edges:
Often within weeks in warm weather. Hoverflies and lady beetles show up quickly if aphids are present; parasitoid wasps build over a season. Keep blooms going and avoid broad sprays to maintain momentum.
Sometimes. Simple bundles of hollow stems can support solitary bees, but oversized hotels can harbor pests if not cleaned. Keep things small, sheltered from rain, and refresh annually. Natural habitat (stems, grasses, logs) is best.
Maybe, but far less often. With good habitat you’ll spot-treat smaller outbreaks instead of blanket-spraying. When possible, choose non-chemical tactics first.
Absolutely. Interplant herbs and annual flowers among tomatoes, squash, and berries. You’ll get pollination and predator activity right where you need it.
Beneficial plantings don’t increase mosquitoes if you avoid stagnant water. Keep birdbaths fresh and use moving water or mosquito dunks where appropriate.
Attracting beneficial insects is not a one-and-done trick—it’s a gardening mindset. Plant for continuous bloom, leave pockets of shelter, water wisely, dim the nightlights, and reach for sprays last. Do that, and you’ll notice the shift: fewer outbreaks, more life, and a garden that hums (literally).
Updated: November 2025 • Reviewed by Gardenia Editors
Tiplyashina Evgeniya, Shutterstock
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Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.
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