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Organic Cal Sweet Lettuce

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Our price: $3.45
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organic chioggia beets
Organic Cal Sweet Lettuce
Lactuca sativa

Packet contains 1/2 a gram, roughly 200 seeds 

This outstanding crisphead (Great Lakes group) stays deliciously sweet and tender well into the June heat. The leaves are thick and blistered on the surface, with wavy and toothed margins.  The color is a muted green. Cal Sweet has some resistance to tip burn and downy mildew.  White seeded.

Cal Sweet was developed by Ferry-Morse Seed Co. in the 1970's, and doesn't seem to be available commercially anymore. There is some variation in the degree of head formation in this population, and we are working to select for more uniform heading.  Nevertheless, this is a clear employee favorite for its flavor and robustness, and we want to make sure it doesn't disappear.  





Seed Planting Depth

Seeds per gram

Germination Temperature

Days to Germination

Row Spacing

Plant Spacing

100' Row Yield


1/8" 600-800 40-65 2-14 12" 8" 80 lb. Full to Partial

Latuca sativa var.crispa

Planting Tips for Organic Heirloom Lettuce Seeds:

Sow directly into very fertile, loose soil.  Thin down to final spacing once plants are established.  For best results, plant in spring or fall.  Harvest outside leaves for a continual harvest.  For longer harvest, stagger plantings every 2-3 weeks.

Heat Tolerance:  If you are growing lettuce in the heat, plant them where they will get afternoon shade.  Lettuce is a spring and fall crop in really hot areas.

Harvest Tips: For a continual harvest, sow every 2-3 weeks a new crop if cutting full heads, otherwise harvesting outside leaves will encourage a longer harvest from individual plants.

Seeding Rate:

30,000 plants/acre, aproximately 2 oz.

Heirloom seeds are hardy but always take care with your garden seeds to give them the appropriate amount of moisture - not letting the vegetable seeds dry out prematurely or overwatering and possibly having them rot.


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