09/12/2026
My favorite trap crops:
Mustard Greens for pests on your brassicas (kale, broccoli, cauliflower, Brussels sprouts, and Bok Choy)
Mustard Greens also act a a fumigant to help with root knot nematodes. Some varieties are better than others for root knot nematodes. More on that later.
Radishes and mustard greens are both great at specifically trapping flea beetles which eat a wide variety of garden plants
Garden huckleberry as a trap crop for all pests that eat nightshades (tomatoes, peppers, eggplants,etc.)
Blue Hubbard Squash and Luffa for pests on your cucurbits (squash, pumpkins, cucumbers, melons)
Amaranth for armyworms and sap sucking insects like stink bugs and leaf footed bugs. Which are very common and can otherwise be devastating to food plants.
Hibiscus, milkweed and blue butterfly pea for aphids (please only plant milkweed appropriate for your zone to help protect monarchs). A strong hose drowns aphids.
Nasturtiums for leaf miners and other pests too.
Sunflowers attract leaf footed bugs, stink bugs and other sap sucking insects. Sorghum millet and buckwheat can also be good trap crop for these.
I plant my trap crops near but not touching the food plants they are protecting. 3-25ft ish. When pests find your trap crop they'll be attracted to them first where predatory insects will usually find them and take care of them for you.
This is one reason it’s beneficial to help wasps, spiders, lizards, frogs, toads and other predatory creatures to thrive in your garden. It’s also another reason why I don’t recommend spraying ANY indescriminant pesticides that kill every insect they touch. If you don’t have a decent predator population in your garden you can remove or treat pests yourself there on the trap crop before they damage your preferred food plants.
This often looks like manually removing affected leaves, eggs, and pests or spraying with BT thuricide for caterpillars specifically.
Tape is great for removing eggs and a hand vacuum is great for quickly collecting pests.
Depending on the severity and quantity, you might not need to do anything at all. On garden huckleberries, the pests only seem to want to eat the leaves saving the berries for eating.
Happy Gardening 💚