How to Grow Arctic Star
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Arctic Star
Brassica oleracea var. italica
vegetableArctic Star is a cold-hardy broccoli variety developed for northern climates and early spring planting. It produces medium-sized heads with tight, blue-green florets and excellent flavor even in cool conditions. This variety is particularly valued for its ability to thrive in short growing seasons and cold weather.
When should you plant Arctic Star in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example Arctic Star timeline · Pittsburgh, PA (Zone 6b)
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Plant Arctic Star
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Arctic Star
Around Jun 6≈ 50 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Arctic Star dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 2-7, exceptional cold tolerance for northern gardeners
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Get my Arctic Star timeline →Growth Stages
Seedling
7-10 daysTiny cotyledons emerge, followed by first true leaves with characteristic brassica shape
Keep soil consistently moist; provide bright light indoors or dappled shade outdoors; thin seedlings to prevent damping off
Vegetative Growth
20-25 daysPlant develops 4-6 true leaves, establishing strong root system and sturdy stem
Maintain steady moisture and fertility; apply balanced fertilizer every 2 weeks; harden off transplants gradually before planting outdoors
Head Maturation
10-15 daysMain head reaches full size with tightly packed, dark blue-green florets; buds remain unopened and compact
Continue regular watering; harvest before florets begin to separate or yellow; monitor for pests and diseases
Secondary Shoot Production
20-30 daysAfter main head removal, smaller side shoots develop along the stem
Continue watering and fertilizing to encourage side shoot development; harvest regularly for extended production
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Row covers before moths appear; hand-pick caterpillars; Bt (Bacillus thuringiensis) spray; neem oil
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Strong water spray to dislodge; insecticidal soap; neem oil; encourage beneficial insects like ladybugs
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Row covers on seedlings; diatomaceous earth; neem oil; trap crops like radishes
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Row covers; Bt spray; hand-picking; bacillus thuringiensis applications
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Ensure good air circulation; avoid overhead watering; sulfur dust or potassium bicarbonate spray; resistant varieties
Uses
Fresh cooking and steaming
CulinaryArctic Star broccoli is excellent for steaming, roasting, or raw in salads. Its cold-hardy genetics produce sweeter florets with delicate flavor ideal for diverse cooking methods. [source]
Freezing for storage
CulinaryThis variety freezes exceptionally well for long-term storage. Blanch briefly, cool in ice water, and freeze for year-round use in soups, stir-fries, and casseroles. [source]
Sulforaphane and cancer prevention
MedicinalBroccoli contains glucosinolates that convert to sulforaphane, a compound with potential anti-cancer and anti-inflammatory properties. Fresh or lightly cooked broccoli maximizes sulforaphane availability. [source]
Vitamin K and bone health
MedicinalOne serving of broccoli provides substantial vitamin K, essential for bone mineralization and blood clotting. Regular consumption supports skeletal and cardiovascular health. [source]
Pollinator and beneficial insect support
WildlifeAllowing some plants to bolt and flower attracts bees, hoverflies, and parasitic wasps. These beneficial insects provide pest control for the garden while supporting pollinator populations. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Harvest main head when it reaches 4-6 inches diameter with tightly closed florets, typically 50-70 days from planting. Cut at the base with a sharp knife in early morning before heat stress. Harvest when heads are firm and dark green; once buds begin separating or yellowing, quality declines. Secondary shoots will develop after main head removal and can be harvested for 3-4 weeks.
Fun Facts
- 🌱 Arctic Star was specifically bred to mature in the short growing seasons of Alaska and northern Canada, making it one of the few broccoli varieties that can produce heads in subarctic zones.
- 🌱 Broccoli is a man-made vegetable, created by Italian farmers through selective breeding of wild cabbage relatives over many centuries; Arctic Star represents modern cold-climate breeding achievement.
- 🌱 The name 'broccoli' comes from the Italian 'brocco,' meaning 'branch' or 'shoot,' referring to how the plant produces multiple flower heads on a branching stem structure.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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