cabbage, broccoli, and allies

G

garden nasturtium

Tropaeolum majus

Nasturtium acts as a trap crop for aphids, drawing them away from brassicas. It also attracts beneficial predatory insects that consume brassica pests.

M

Mexican Marigold

Tagetes erecta

Research trials cited on the page found that interplanting marigold among cabbage helped reduce damage from cabbage loopers and imported cabbageworms.

C

crimson clover

Trifolium incarnatum

Crimson clover's nitrogen fixation benefits brassica crops, and it can be cut and used as a nitrogen-rich mulch.

E

eastern black walnut

Juglans nigra

Juglone produced by walnut trees suppresses growth and productivity in brassicas and other susceptible plants within its root zone and drip line.

B

Bronze Fennel

Foeniculum vulgare

Fennel produces allelopathic compounds that inhibit the growth and germination of brassicas, reducing their vigor.