500mg
Heatwave Lettuce Seed Mix. Lactuca. The Heatwave Lettuce Mix lettuces that thrive in the heat and remain productive. Our choice "slow-bolt" varieties feature Grand Rapids, Prizehead, Royal Oak, Bronze Arrow, and Merveille Des Quatre Saisons. These lettuce types texture range from green and red looseleaf to Bibbs.
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Taxonomy: Genus Lactuca
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Days to Maturity: 45-60 days
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Days to Germination: 3-10
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Planting Depth: 1/4"
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Plant Spacing: 9-12"
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Plant Height: 6-12"
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Row Spacing: 12-15"
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Growth Habit: Leafy mound
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Soil Preference: Nitrogen-rich, composted, well-drained
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Temp Preference: Temperate, 55-70 °F
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Light Preference: Full sun
