Propagate by seed

Germination temperature: 45 F to 85 F

Days to emergence: 4 to 7

Grow similar to broccoli. Direct seed from early spring to late summer, about 1 inch apart and ¼ to ½ inch deep in rows 18 to 24 inches apart. Thin to 4 to 6 inches apart.

Use floating row cover to protect from insects.

Cabbageworms - Handpick and destroy. Row covers may be useful on small plantings to help protect plants from early damage. Put in place at planting and remove before temperatures get too hot in midsummer.

Flea beetles - Use row covers to help protect plants from early damage. Put in place at planting and remove before temperatures get too hot in midsummer. Control weeds.

Cabbage root maggot - White maggots (larvae) attack all plants of the cabbage family. Larvae tunnel in and feed on roots of plants. Damage causes wilting early on, death of plants a little later on.

Cabbage aphids - A hard stream of water can be used to remove aphids from plants. Wash off with water occasionally as needed early in the day. Check for evidence of natural enemies such as gray-brown or bloated parasitized aphids and the presence of alligator-like larvae of lady beetles and lacewings.

Other pests:

Slugs and snails
Cutworms

Clubroot - Locate new plants in a part of the garden different from previous year's location. If that is not possible, remove infested soil and replace with fresh soil. Purchase healthy transplants or start seed in sterile potting soil or fresh ground. Rogue plants. Remove and discard or destroy entire infested plant along with immediately surrounding soil and soil clinging to roots. If soil is infested, add lime to raise pH to 7.2.

Browse broccoli raab varieties at our Vegetable Varieties for Gardeners website.