311

Insect Information
Companion Planting for Repelling Insects

What is companion planting?
How can I companion plant?

What is companion planting?

Some plants do better when in the company of other plants. Companion planting is using this knowledge to increase plant performance. Companion planting includes planting flowers, herbs or vegetables to repel or trap harmful insects. It also includes using plants to attract useful insects which prey upon harmful insects. People use companion planting as a way of reducing chemical insecticide use.

top of page Top of Page

How can I companion plant?

Companion planting requires some experimentation. What may be successful in one garden may not be successful in another garden. This may be caused by different microclimates, soil types, plant varieties and cropping practices.

top of page Top of Page


Plants that repel harmful insects

Ants

Tansy
Onions
Mint family
Aphids

Chives
Garlic
Marigolds
Mint family
Dried & crushed chrysanthemum flowers
Coriander
Onions
Oregano



Cabbage moths

Rosemary
Sage
Thyme
Cabbage worms

Tomatoes
Celery
Carrot flies

Leeks
Sage
Rosemary


Colorado potato beetles

Green beans
Marigolds
Nasturtiums
Flax

Cucumber beetles

Nasturtiums
Radishes
Tansy



Flea beetles

Catnip
Garlic

Flies

Basil
Tansy

Mosquitoes

Dried & crushed chrysanthemum flowers


Leafhoppers

Dried & crushed chrysanthemum flowers
Onion flies

Garlic
Ticks

Garlic
Tomato worms

Borage
Whiteflies

Marigold
Oregano




Plants that attract useful insects

Assassin bugs

Alfalfa
Carrot
Goldenrod


Big-eyed bugs

Alfalfa
Carrot
Goldenrod
Damsel bugs

Alfalfa
Lacewings

Carrot
Lady beetles

Alfalfa
Morning glory
Yarrow
Goldenrod


Parasitic wasps

Yarrow
White clover
Goldenrod
Carrot
Alfalfa
Syrphid flies

Buckwheat
Candytuft
Fennel
Morning glory


Tachinid flies>

Coriander
Fennel
Ivy
White sweet clover

Yellowjacket wasps

Ivy
White sweet clover
Carrot


Plants that trap harmful insects

Aphids

Nasturtium >

Flea beetles

Radish
Nasturtium
Potato bugs

Egg plant

 

top of page Top of Page

Last update: 01/19/2009