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Beneficial Insects in Your Garden

When working or relaxing in your garden, you may be startled to see the variety of bugs that exist there.  Before becoming concerned, it’s advisable to identify the insect and determine whether they are benefiting your garden.  The following tips will help you identify and attract the beneficial ones.

Beneficial Insects in Your Garden
Beneficial Insects for Pest Control

What Insects Do to Help

  • They act as pollinators, decomposers, predators who prey on other insects, or are food for someone higher on the food chain.
  • We are totally dependant on bugs as decomposers.
  • They process and decompose organic wastes.

Your Plants Attract Insects

Beneficial Garden Insects

  • Insects and plants have evolved an intricate communication system of chemical signals released into the air. Predators use olfactory cues to find their prey, which comes in the form of volatile chemicals produced by both the plants and insects. Each signal the plant emits is also specific to the insect feasting on it.
  • Use cues based on nutritional needs such as the scent of nectar and pollen from flowers.
  • Colour cues are also an important factor such as yellow if nectar is the need and green if looking for a place to lay eggs.
  • When insects are noted on a plant such as aphids, wait and watch for signs of beneficial insects to arrive such as ladybugs or ladybug larvae before using chemical controls

Beneficial Insects to Encourage

Beneficial Insects
beneficial insects
SpeciesBenefitsHow to Attract Them
Aphid MidgePest control for aphids.Dill, plants with lots of pollen and nectar.
Braconid WaspPest control for caterpillars, hornworms, and beetle larvae.Dill, fennel, parsley, yarrow, and thyme.
Damsel BugPest control for mites, aphids, cabbage worms, and caterpillars.Fennel, goldenrod, marigold, and alfalfa.
Dragon FlyPest control for mosquitoes, blackflies, horseflies and midges.
Larva stage eat aquatic insects, tadpoles and small fish.
Ponds, rain gardens or fountains, dragonflies are attracted to water. Water plants as nurseries for the larva, taller plants around pond and some flat rocks
EarthwormImproves drainage, soil structure, and nutrient availability.Increase organic matter in your garden.
Ground BeetlePest control for slugs, snails, cutworms, and more.Perennials and consistent mulch.
Honey Bee / Bumble BeePollinationFlowering plants.
HoverflyPest control for aphids, thrips, mealybugs, and other small pest insects.Lavender, fennel, parsley, yarrow, and aster.
LacewingPest control for aphids, scale, thrips, mealybugs, and caterpillars.Sweet alyssum, coreopsis, dill, and cosmos.
Lady Beetle (bug)Pest control for aphids, mealybugs, and mites.Carrots, parsley, dill, fennel, and yarrow.
Minute Pirate BugPest control for spider mites, aphids, whiteflies, thrips, and scale.Fennel, goldenrod, marigold, and alfalfa.
Praying MantisPest control for caterpillars, moths, beetles, and crickets.Cosmos, marigold, dill, and tall grasses.
Predatory MitePest control for spider mites.Humid environments.
Soldier BeetlePest control for aphids, grasshoppers, and caterpillar.Goldenrod and catnip.
SpiderPest control for bed bugs, aphids, roaches, grasshoppers, and fruit flies.Tall plants for spiders who weave webs, mulch for predatory types.
Spined Soldier BugPest control for beetle larvae and caterpillars.Deciduous trees and grass.
Tachinid FlyPest control for caterpillars, stink bugs, squash bug nymphs, and beetle larvae.Golden marguerite, lemon balm, parsley, and thyme.

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