Brassica rapa (Ruvo group). Broccoli raab is sometimes called rapini. Like broccoli, it is grown for its unopened flower buds. The flavour is very similar to broccoli, with a touch of bitterness that is surprisingly appealing. Broccoli raab is actually more closely related to turnips than broccoli, but is not grown as a root crop. Sorrento broccoli raab seeds produce uniform dark green florets approximately 5cm (2″) in diameter. Sorrento is the fastest rapini to mature. Gather the tender stems with a few leaves and the unopened flower buds for a reliable and nutritious addition to the kitchen or market garden. Plant in mid to late summer for a cool weather harvest well into winter. Expect plants to grow to 78cm (30″) tall.
Matures in 40-45 days. (Open-pollinated seeds)
How to Grow Broccoli Raab
One stalk of cooked broccoli gives you 75mg of vitamin C, 1300 IU of beta carotene, 3g of protein and 5g of dietary fibre with only 40 calories. No wonder they is one of the most popular vegetables you can eat today! The crown portion tastes great when cooked or steamed. You can eat the greens, too! Retain the stems for soups or soup stock. Follow along with this handy How to Grow Broccoli from Seeds Guide and grow food!.
Brassica oleraceae var. italica
We Recommend: Everest (BR182). For a hybrid broccoli, Everest is priced right – many hybrid varieties can be pricey. But Everest is early, large in stature, and very tasty. Grocery store broccoli from your own back yard!
For Urban Gardeners: Certified Organic Broccoli Microgreens (MG195). These are very easy and fast to grow, and by all accounts one of the healthiest things you can eat. Perfect for even the smallest home food production space!
Season & Zone
Season: Cool season
Start indoors March/April or late April/May for summer harvest in 2 to 3 months. For fall harvest, start indoors late May/early June and transplant in July, harvesting in September/October. For overwintering sprouting broccoli, start indoors late March to mid-April, and harvest the following February to May. Seeds will germinate in 7-10 days. Optimal temperature for germination: 10-30°C (50-85°F).
Sow indoors, 3 or 4 seeds per pot, 5mm (¼”) deep, under very bright light. Thin to the strongest plant. Space transplants 45-60cm (18-24″) apart in rows 75-90cm (30-36″) apart.
Ideal pH: 6.0-6.8. Broccoli is a moderate to heavy feeder that does best in humus-rich soil amended with composted manure. Mix ¼-½ cup complete organic fertilizer into the soil under each transplant. Transplants should be set out by the time they have 6-8 true leaves. When plants are 20-25cm (8-10″) tall, push soil around the stems up to the first big leaf to encourage side shoots. Broccoli does best in cool weather.
Cut the crown portion of the broccoli with 5 to 6 inches of stem, after it’s fully developed, but before it begins to loosen and separate and the individual flowers start to develop into bright yellow blooms. Removing the central head stimulates regrowth to develop for later pickings. Cutting the head lower on the stem will encourage fewer, but larger side-shoots. The regrowth portion grows from the base of the lower leaves. You can usually continue to harvest broccoli for several weeks.
In optimum conditions at least 80% of seeds will germinate. Usual seed life: 3 years. Per 100′ row: 170 seeds, per acre: 30M seeds.
Diseases & Pests
Slugs and snails – Slugs are attracted to beer, so place a little beer in a cup dug into the ground. Sprinkle broken eggshells around plants to deter slugs and snails.
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.
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.
To help reduce disease, do not plant broccoli or other Brassicas in the same location more than once every three or four years.
All Brassicas benefit from chamomile, dill, mint, rosemary, and sage. Avoid planting near eggplants, peppers, potatoes, or tomatoes.
More on Companion Planting.
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