Australe Butterhead Lettuce is a frost-tolerant cultivar that thrives in cool seasons, ready to harvest in as little as 21 days under ideal conditions or up to 55 days for fuller heads. This compact butterhead variety grows to just 8-9 inches wide, making it efficient in the garden and on the plate. Its upright growth habit and tolerance for light frosts extend the harvest window into shoulder seasons, while the ability to successive sow every three weeks means you can enjoy crisp, tender lettuce throughout the growing year.
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Australe's frost tolerance is its signature trait, allowing gardeners to push harvests into cooler months when other lettuces bolt or struggle. The rapid turnaround from seed to table, combined with its tidy 8-9 inch mature width, makes it efficient for small spaces and succession planting. Starting seed directly outdoors just 2-4 weeks before your average last frost date, or indoors when summer heat climbs above 80°F, keeps you in control of timing and harvest rhythm.
Australe Butterhead serves as a fresh salad lettuce, prized for the tender, layered leaves characteristic of butterhead types. Its quick maturity and repeated sowability make it a reliable choice for gardeners practicing continuous harvest throughout cool and cold seasons.
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Start seeds indoors 4-6 weeks before your average last frost date. You can also start seeds indoors during summer when outdoor soil temperatures exceed 80°F, since lettuce germination and growth are inhibited in heat. Transplant seedlings outdoors 4-6 weeks before your average last frost date or after outdoor temperatures cool in late summer.
Transplant seedlings outdoors 4-6 weeks before your average last frost date when soil is workable. Space transplants 8 inches apart in rows 8 inches apart. Harden off seedlings gradually before planting to help them adjust to outdoor conditions.
Direct sow outdoors 2-4 weeks before your average last frost date, when soil temperature reaches at least 40°F. For continuous harvests, make successive sowings every 3 weeks until 4-6 weeks before your average first fall frost date. In mild climates, sow in fall and winter for cool-season harvests. Sow seed at a depth of surface to 1/8 inch.
Australe reaches maturity between 21-55 days depending on growing conditions and whether you want tender early leaves or full, formed heads. For loose leaves, begin harvesting outer leaves once the plant is established; for full butterheads, wait until the head feels gently firm to the touch and the outer leaves have fully opened. Harvest in the morning when leaves are crisp and turgid. Cut the entire head at soil level if desired, or use the cut-and-come-again method to harvest outer leaves while the center continues growing.
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