Prismatic Mini Head Lettuce is an exclusive, stunning open-pollinated variety from Johnny's Selected Seeds that delivers compact, full heads in just 55 days from transplants. This cool-weather crop thrives in the crisp conditions most lettuce lovers crave, germinating reliably between 60 and 70°F and growing best at 60 to 65°F. With its frost tolerance and ability to handle early-season planting, it rewards gardeners who time their sowings right with successive harvests of tender, home-grown heads.
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Johnny's describes this as an exclusive, stunning selection with conventional seed and NOP-compliant pelleting, setting it apart as a consciously bred variety for serious gardeners. The compact growth habit means you can space plants just 6 inches apart in rows 12 inches apart, fitting multiple heads into a small garden footprint. Frost tolerance gives you flexibility to plant earlier and harvest later than many lettuces, extending your season on both ends.
Prismatic Mini Head Lettuce is grown for fresh salads and can be harvested as either individual full heads or as part of mixed salad harvest depending on your preference and timing. The compact size and quick 55-day maturity make it well suited to succession planting for a continuous supply of fresh lettuce through the cool season.
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Start Prismatic Mini Head from seed indoors, targeting germination temperatures between 60 and 70°F. Johnny's notes that lettuce germinates best below 70°F, so avoid letting seedling trays warm up, especially under grow lights. Expect approximately 16,000 plants per ounce of seed.
Transplant outdoors as soon as your soil is workable in spring, taking advantage of this variety's frost tolerance. Harden off seedlings by gradually exposing them to outdoor conditions before planting. Space transplants 6 inches apart in rows 12 inches apart.
Harvest Prismatic Mini Head Lettuce at 55 days from transplanting when heads reach full size. Cut heads at soil level with a sharp knife, or harvest individual outer leaves if you prefer a cut-and-come-again approach. Morning harvest, when plants are crisp with moisture, yields the best texture and flavor.
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