Winterwunder Lettuce is a cold-hardy loose-leaf variety bred to thrive when other lettuces fade. At 60 days from direct seeding, it delivers tender, harvestable leaves through the shoulder seasons and into winter when fresh greens are most precious. This Lactuca sativa cultivar grows best in full sun with moderate water and slightly acidic to neutral soil (pH 6.0-7.0), making it surprisingly straightforward to grow despite its reputation for cold tolerance. The tight 1-inch in-row spacing allows for dense, productive plantings, while the 16-inch row spacing keeps maintenance manageable.
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The real magic of Winterwunder is in its name: it genuinely performs when frost arrives and tender lettuces bolt or collapse. Loose-leaf types like this one give you the flexibility to harvest outer leaves continuously, coaxing more productivity from each plant without uprooting it. Direct sow every 2-3 weeks during the growing season to create a rolling harvest that extends well past summer's heat stress.
Winterwunder is primarily grown for fresh salads and raw culinary applications. The loose-leaf structure makes it exceptional for harvest-as-you-go approaches, where individual outer leaves are picked to extend the plant's productive window. It's equally suited to whole-plant harvest if you need larger quantities at once.
No timeline data available yet for this variety.
Start seeds indoors 4-6 weeks before your anticipated transplant date if you prefer a head start over direct seeding.
Transplant seedlings outdoors after they've developed 2-3 true leaves. Thin loose-leaf types to 10-14 inches apart once established, allowing room for full leaf development.
Direct sow seeds as soon as soil is workable in spring or summer. Use row cover immediately after sowing to improve germination and prevent soil crusting. Remove the cover once 2-3 true leaves have formed.
Begin harvesting individual outer leaves once the plant is established, typically around 60 days from direct seeding. Pick leaves from the outside of the plant, allowing the inner leaves to continue growing and producing. This leaf-by-leaf approach extends your harvest window significantly. You can also cut the entire plant about 1 inch above the soil for a larger harvest, or remove the entire plant if needed. Check plants daily as they mature, since all varieties eventually become bitter as they begin to bolt; harvest promptly once leaves reach desired size.
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