How to grow broccoli?

One stalk of cooked broccoli gives you 75mg of vitamin C, 1300 IU of beta-carotene, 3g of protein and 5g of dietary fiber with only 40 calories. No wonder they are 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!.

Latin name of Broccoli
Brassica oleraceae var. italica
Family: Brassicaceae

Difficulty
Moderately difficult

Season & Zone
Season: Cool season
Exposure: Full-sun
Zone: 3-10

Timing of growing Broccoli
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. The optimal temperature for germination: 10-30°C (50-85°F).

Starting Broccoli
Sow indoors, 3 or 4 seeds per pot, 5mm (¼”) deep, under a very bright light. Thin to the strongest plant. Space transplants 45-60cm (18-24″) apart in rows 75-90cm (30-36″) apart.

Growing Broccoli from seed
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.

Harvesting Broccoli
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.

Broccoli Seed Information
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 of Broccoli
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.

Companion Planting in Broccoli
All Brassicas benefit from chamomile, dill, mint, rosemary, and sage. Avoid planting near eggplants, peppers, potatoes, or tomatoes.