Early maturing with medium green, firm, button-like sprouts that are evenly spaced and well formed. Don’t transplant until late April, and then harvest masses of tasty sprouts from late August through September. Plant more seeds in June for transplanting in August. These will be ready for late fall and winter harvests, so you can be the one to bring Brussels sprouts to the holiday dinner parties. Avoid transplanting Brussels sprouts into high nitrogen soils. Gustus Brussels sprout seeds replace the much loved but now unavailable Oliver Brussels sprout seeds.
Matures in 100-120 days. (Hybrid seeds)
How to Grow Brussels Sprouts
Brussels sprouts are a superb holiday treat. Like broccoli, these little “cabbages” are full of beta-carotene, vitamin C, and fibre. And after frost, they become sweet, as the plants create sugar for antifreeze! Keep your plants moist and well-mulched during the heat of summer, to ensure your supply of Brussels sprouts until the holidays. These big top-heavy plants are some of the easiest brassicas to grow. You should be able to expect a large harvest from only 4 or 5 plants. Follow along this handy How to Grow Brussels Sprouts and grow mini cabbages this season.
Brassica oleracea var. gemmifera
We Recommend: Igor (BS219). You pay a bit more for this hybrid Brussels sprout, but the plants are so uniform and productive, it’s worth every penny. This is a great variety for gardeners who are new to the crop.
Season & Zone
Season: Cool season
Start indoors at the end of May or early June. Transplant to the garden by mid-August so the plants are in the ground for 45-60 days before the first hard frost. Optimal soil temperature for germination: 10-30°C (50-85°F). Seeds should germinate in 7-10 days.
Sow 3-4 seeds per pot, 5mm (¼”) deep, under very bright light. Thin to the strongest plant. Transplants should be set out when they have 6-8 true leaves. Space transplants 45-60cm (18-24″) apart in rows 75-90cm (30-36″) apart.
Ideal pH: 6.0-7.5. Plant in humus-rich soil amended with composted manure. Mix ¼ cup complete organic fertilizer into the soil under each transplant. High nitrogen levels result in loose sprouts with internal browning, so do not fertilize after midsummer. Cool temperatures during sprout development are important for compact, quality sprouts.
Sprouts are sweeter after moderate freezes. Pick when sprouts are firm and well-formed, beginning with the ones at the bottom. The upper sprouts continue to form and enlarge as the bottom ones are harvested. For a once over harvest, to ensure you have enough for your holiday meal, pinch out the growing point at the top of the stem when the lower sprouts are 1-2 cm (½-¾”) in diameter. A full stem of evenly sized sprouts will develop in about 2 weeks.
After harvesting the sprouts, there is another harvest-in early spring. The plant sends up long, edible flower stalks which are tender and sweet when steamed, or served raw with a dip.
In optimum conditions at least 80% of seeds will sprout. 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.
Cabbage aphids – A hard stream of water can be used to remove aphids from plants. Wash off with water as needed early in the day. Check for evidence of natural enemies such as gray-brown or bloated parasitized aphids and the presence of larvae of lady beetles and lacewings.
Cabbage root maggot – White maggot larvae feed on roots of plants. Damage causes wilting early on, and the death of plants later on.
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. Nematodes feed on the larvae of these pests.
Cutworms – Control weeds. Cardboard collars around each plant give good protection.
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.
Clubroot: If soil is infested, add lime to raise pH of soil to 7.2. Locate 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. Start seeds in sterile potting mix or fresh ground. Remove and discard or destroy infested plants along with the surrounding soil and soil clinging to roots.
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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