Brussel sprouts are generally ideal for planting in zones 3-10, depending on the variety, though you can even find some that will thrive in zone 2. Brussels sprouts. Brussels sprouts require a long growing season of 80 days or more, and they improve in flavor after being subjected to a light frost. Space plants 18 to 24 inches apart and rows three feet apart. The growing of Brussels Sprouts is fairly successful in almost every area of zones 4 to 8 (as a winter vegetable in zone 8). Planting Zones. You should adjust the planting dates relative to your particular area, and the specific variety of vegetables going into your garden. Planting brussels sprouts. Some varieties even taste better after exposure to a freeze. Brussels sprouts were first recorded as a spontaneous sport from a cabbage plant found in the Brussels region of Belgium around 1750. When grown in lightly frosty or cool weather, the taste and quality of the plant improves. As the seedlings are hardening off, prep the garden for transplanting. Brussels sprouts grow best in full sun and fertile soil. 16 Jun 20, Melanie (USA - Zone 9a climate) What is the best variety of Brussels Sprouts to plant in zone 9a? I want to plant brussel sprouts now June 20th or wait til July 12th when its rainy and cooler for late fall harvesting .Is that wise ? Carefully break them off with a sharp downward tug. Start picking the lowest sprouts and work your way up the stem. This is a cool-season vegetable and tolerates a light frost. Hardiness Zones: 2 to 9: Native Area: Mediterranean: Toxicity: Non-toxic: The Spruce / K. Dave The Spruce / K. Dave The Spruce / K. Dave The Spruce / K. Dave The Spruce / K. Dave The Spruce / K. Dave How to Plant Brussels Sprouts . They are a cool-season veggie and can withstand freezes for short periods of time, but sustained cold snaps and burial in snow won’t result in winter sprouts. Sunlight Requirements . Pick Brussels sprouts for immediate use when they are large enough for cooking, and still firm and tightly closed. I like to dig in a few inches of compost or aged manure before planting as well as a granular organic fertilizer or kelp meal. A stalwart among winter vegetables in cool temperate climates, they taste much better when harvested from the garden after being frosted than when bought from the shop. Sprouts don’t store well, but they can be blanched and frozen, so leave them on the plant and pick as you need them. The exact values may be slightly off (~2 weeks) for your particular zone. Brussels sprouts can also be grown in USDA zones 4-7 but with harsher winters, but caring for Brussels sprouts in winter requires a greenhouse. See the chart (on right) to view the average dates of first and last freeze (low temperature reaches 32 degrees Fahrenheit) for each zone. For areas with deep snow cover Brussels sprouts may over-winter. Reply or Post a new comment. Reply or Post a new comment.