Dill Companion Planting
Anethum graveolens
Carrot (Apiaceae) -- cool season
Good Companions for Dill
Flowering dill attracts Cotesia glomerata and other parasitoid wasps that parasitize imported cabbageworm (Pieris rapae) larvae. Dill flowers also attract Chrysoperla (lacewing) adults.
Allow dill to flower among brassica beds. Remove spent flower heads to prevent excessive self-seeding if desired.
- Effects of floral provisioning on parasitism of imported cabbageworm -- Environmental Entomology (2001)
- Companion Planting for Brassica Pest Management -- Cornell Cooperative Extension (2016)
Flowering dill attracts Cotesia glomerata and other parasitoid wasps that parasitize imported cabbageworm (Pieris rapae) larvae on cauliflower. Same mechanism documented for cabbage-dill.
Allow dill to flower among cauliflower. Cauliflower is particularly sensitive to caterpillar damage on developing heads.
- Effects of floral provisioning on parasitism of imported cabbageworm -- Environmental Entomology (2001)
Flowering dill attracts predatory insects (Chrysoperla spp., Coccinellidae, Syrphidae) that control cucumber beetle (Diabrotica undecimpunctata) and aphid populations on nearby cucumbers.
Plant dill near cucumbers but not too close -- mature dill allelopathy may affect adjacent plants at very close range. 30-60 cm spacing is ideal.
- Insectary strip effects on natural enemy abundance and pest control in cucurbits -- Environmental Entomology (2005)
- Habitat management for natural enemies of pests -- Annual Review of Entomology (2000)
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