SproutSmart
SproutSmart™ Intelligent Garden Sowing

German Extra Hardy

Garlic
Zone 3b Save Garden

Planting Schedule

Add German Extra Hardy to your garden to build a schedule and get reminders.
Botanical illustration of German Extra Hardy
240d to harvest

Clove after clove of German Extra Hardy brings a bold, lingering bite with a distinctly robust, savory fragrance that fills the kitchen long before the first peel. The hardneck heads form with strong, well-defined cloves and a firm, creamy-tender texture when roasted or sautéed, making this variety a favorite for deep-flavored sauces and hearty winter preparations. For home gardeners seeking dependable performance and classic hardneck character, German Extra Hardy rewards with rich, full bulbs at about 240 days.

Sowing Tips

Soil Temperature

Direct sow or transplant when soil at planting depth holds 40°F for reliable germination and early growth.

Expert Note

Plant hardneck garlic cloves pointy-side up in fall with good drainage; mulch heavily and keep evenly moist until growth resumes in spring for the best bulb size.

Crop Dates

Growing note: Zone 3b has only 125 frost-free days — shorter than this crop's 240-day maturity. Outdoor planting is not viable; use protected cultivation.
MilestoneDate
Last FrostMay 19th
Growing ApproachProtected Environment Only

Crop Details

TraitValue
Days to Maturity240
Sun RequirementsFull SunFull sun
Growth HabitBulbing
Support NeededNone
Planting DepthNormal
Germination Temp (°F)50
Min Soil Temp (°F)40
Min Night Temp (°F)28
Harden Off (days)Not Required

Today's Conditions

Outdoor planting for German Extra Hardy in Zone 3b typically begins around Indoor Lights Only. Wait until soil reaches at least 40°F before transplanting German Extra Hardy.

Garden Alerts

Zone 3b has only 125 frost-free days — shorter than this crop's 240-day maturity. Outdoor planting is not viable; use protected cultivation.

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Frequently Asked Questions

What pest or disease most commonly affects garlic (Allium sativum), and what should I do if I see it?
Garlic is especially prone to white rot (Sclerotium cepivorum), which causes yellowing, stunted growth, and plants that collapse with a white, cottony fungal growth at the base. Remove and destroy affected plants immediately, and do not replant garlic or other alliums in that bed for at least several years. For prevention in future seasons, use only healthy bulbs, improve drainage, and avoid working in the soil when it’s wet to reduce spread.
How often should I water garlic during active growth, and what soil moisture level should I aim for?
During the main growing phase, keep soil evenly moist but never waterlogged—aim for about 1 inch of water per week (adjust for rainfall and your soil’s drainage). When the tops are actively growing, water when the top 1–2 inches of soil dry out; consistent moisture helps size the bulbs. Stop regular watering when the lower leaves begin to yellow and brown near maturity so cloves can cure instead of staying watery.
How do I tell when my garlic (Allium sativum) is ready to harvest at around 240 days?
Harvest when about 40–60% of the leaves are yellow/brown and the remaining leaves are still green, and when the wrappers around the bulbs feel tight and papery. If you lift a bulb at this stage, the cloves should be well-formed and distinct, not loose or filling-in. After harvesting, cure bulbs in a dry, airy, shaded place for 2–3 weeks before storage.

Sowing Tips

Soil Temperature

Direct sow or transplant when soil at planting depth holds 40°F for reliable germination and early growth.

Expert Note

Plant hardneck garlic cloves pointy-side up in fall with good drainage; mulch heavily and keep evenly moist until growth resumes in spring for the best bulb size.

Botanical illustration of German Extra Hardy

Clove after clove of German Extra Hardy brings a bold, lingering bite with a distinctly robust, savory fragrance that fills the kitchen long before the first peel. The hardneck heads form with strong, well-defined cloves and a firm, creamy-tender texture when roasted or sautéed, making this variety a favorite for deep-flavored sauces and hearty winter preparations. For home gardeners seeking dependable performance and classic hardneck character, German Extra Hardy rewards with rich, full bulbs at about 240 days.