When to Plant Brussels Sprout in Alaska

Growing Brussels Sprout in Alaska: Complete Guide

Brussels Sprout (Brassica oleracea var. gemmifera) is a warm-season crop that needs a head start indoors before Alaska's last frost. Depending on your zone, Alaska gardeners start seeds indoors between December 21, 2026 (Zone 8b) and March 23, 2027 (Zone 1a), then move transplants outside once their zone's last frost has passed — the zone table above has your exact dates.

Because Alaska stretches across 16 USDA hardiness zones (1a, 1b, 2a, 2b, 3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b), planting windows can shift by as much as six to eight weeks from one end of the state to the other. Gardeners in the warmer southern zones can start earlier, while those in cooler northern zones should wait until the zone table above shows their last frost has passed.

With 84 days to maturity, Brussels Sprout needs the indoor head start that Alaska's growing season requires. Starting indoors ensures you have strong transplants ready the moment outdoor conditions are right.

Brussels Sprout requires full sun and regular moisture. Alaska's long summer days accelerate growth, but frost can arrive early in August — season extension with row covers is essential.

For the most precise planting dates tailored to your exact location, enter your ZIP code on our planting calendar or use the zone table above to find the schedule for your area of Alaska.