Beneficial Insects and How to Attract Them to Your Garden

By Catherine Winter

If you’ve already started seeds for this year’s garden, you likely have several different vegetable and herb seeds sprouting merrily. What a lot of people forget to do, however, is include a variety of flowers and herbs that will help attract beneficial insects as well.
There are a number of plant species that can draw specific insects to your space, so if you’ve had particular issues that you’d like to address without the use of harmful insecticides, read on!

Organic Pest Control

Braconid

Braconid Wasps

These creep me right the hell out so I’m going to write about them first to get them out of the way. Members of the Braconidae family, these parasitic wasps lay their eggs into the skin of caterpillars and beetle larvae. Once the eggs hatch, the wasp larvae feed on the host’s internal organs until they reach maturity, at which point they bugger off.
Ew ew ew, but hey, they’ll kill the cabbage moth larvae eating your organic kale.

Which plants do they like?
These wasps love small-flowered flowers and herbs that produce a fair amount of nectar. Yarrow, coriander, dill, fennel, lemon balm, thyme, parsley, Queen Anne’s lace, and sweet alyssum are sure to coax them to your garden.

Lacewings

Lacewings

You’ve probably seen these delicate beauties clinging to your porch or window screen if a porch light has drawn them close. Their larvae look like alligators and are sometimes referred to as “aphid lions” because of how voraciously they devour the wee beasties. They also eat caterpillars, thrips, and whiteflies.

Which plants do they like?
Yarrow, caraway, angelica, cosmos, fennel, coreopsis, mallows, dill, tansy, sunflowers, and dandelions.

Ladybug.png

Ladybugs (aka Ladybirds)

Adorable and colourful, these happy-looking little beetles annihilate aphids, spider mites, and various other teensy soft-bodied critters. If you haven’t seen many in your area, you can usually buy them at your local garden centre.

Which plants do they like?
Butterfly weed, coriander, yarrow, dill, tansy, cinquefoil, fennel, vetch, buckwheat, calendula.

Insect-Water-Feeder.png

A Good Water Source

Remember that insects need water to wash down all those bad bugs they’ve been eating, so make sure they have a source of clean drinking water handy. If you have a pond or marshy area on your property, they should be okay, but for everyone else, it’s recommended that you make a couple of watering areas.

The easiest way is to pour a layer of pebbles, marbles, or decorative stones in the bottom of a ceramic planter pot, and keep enough water in it to **almost** cover the pebbles. This will give the insects safe places to land while they drink.
Remember, most of these happy bugs have wings, and if they don’t have an easy water source when they’re thirsty, they’ll fly elsewhere.

Please don’t use commercial pesticides!

If you need to use some kind of pesticide, please use methods that are low impact, natural, and/or biodegradable, rather than full of toxic chemicals. You can get repel slugs from the garden with copper strips, use neem for various mites, ants, and beetles, etc. There are many different options that won’t harm the beneficial bugs in your garden, nor seep into the soil to poison plant life.

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