Apiaceae — Carrot family

Shared risks

• carrot rust fly
• Alternaria leaf blight
• parsley worm (swallowtail caterpillar)

Named risks, not an arbitrary score: these are the organisms that carry over in soil, debris or volunteers.

Rotation guidance

Leave 2 years before returning any carrot family member to the same bed. Rotation concerns previous seasons in a bed; it is separate from which plants grow together now.

• Flowering members (dill, cilantro, fennel) are small-flowered insectary plants; fennel is widely reported to compete with neighbours.

Sources

• Attractiveness of common insectary and harvestable floral resources to beneficial insects (2011)
• Effect of mixed cropping on some insect pests of carrots and onions (1984)

Exceptions and small-garden notes

Short crops (radish, arugula, baby leaves) still count as occupancy for the family. In a garden with one or two beds, strict rotation is impossible; instead, alternate families within a bed by half, remove crop debris, choose resistant cultivars and keep a bed history so the planner can warn you.

Other families: Solanaceae · Brassicaceae · Fabaceae · Cucurbitaceae · Asteraceae · Amaryllidaceae · Lamiaceae · Amaranthaceae · Poaceae · Rosaceae · Other families