Summer 38 Celtuce (Stem Lettuce)


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Summer 38 Celtuce a unique cross between celery and lettuce, both in taste and texture! Celtuce is a member of the lettuce family and forms an elongated seedstalk about 12" tall! This cool-season crop can briefly tolerate temperatures as high as 100F and has relatively good tolerance to high and low temperature extremes without bolting! Summer 38 Celtuce's thick white stem can be peeled to expose a bright green core that is stringless and refreshingly crunchy like cucumbers or water chestnuts, and is delicious pickled, stir-fried, sliced, or in soup. The leafy tops have a taste similar to Bibb lettuce and is refreshing with a light sesame peanut dressing. Celtuce is used mainly in stewed, creamed, stir-fried, and sweet pickled Chinese dishes. Celtuce is high in vitamins A and C and potassium.

Also Known As: Asparagus Lettuce, Wosun, Celery Lettuce, Stem Lettuce, Won Sun.
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Plant Name:
Celtuce, Summer 38
Latin Name:
Lactuca sativa var. asparagina or Lactuca sativa var. augustana
Days to Germinate: 5-10
Days to Harvest: 80
Germination Rate: 90%
Test Date: 7/23
Growth Habit: Upright
USDA Zones: 3-11
Lifespan: Annual
Brand: TomorrowSeeds
Sunlight: Full Sun, Partial Shade
Heirloom, Open-Pollinated
Fungicide-Treated Seeds*: No
Seeds Packed For**: 2024

*Fungicide-treated seeds protect the seedlings from diseases until they are up and growing. Do not eat treated seeds.
**Seeds are freshly packed for the growing season of the year listed. Seeds are still viable beyond pack date. Store in a cool and dry location such as the refrigerator or basement to best preserve germination rates.

Planting Instructions:


Soil Preparation:

To prepare soil, remove weeds, large rocks, and litter from the planting area. Leave small weeds and dead grass, they will enrich the soil when turned under. Spade the soil 8-12 inches deep and turn each shovel of soil over completely to cover the plant materials with soil. You may add fertilizer or 2-3 inches of organic material such as compost, leaves, or rotted hay over the planting area at this point. Till to mix this organic material into the top 8-10 inches of soil. Make rows of soil beds 4-6 inches high and at least 2 feet apart. This formation of ridges will help with drainage. 



Plant outdoors after all danger of frost has past in Spring or in Fall when the soil is an average of 50F. Sow seeds in loose, fertile, moist, well-draining soil in full sun if planting in a cloudy climate or in partial shade if in hot climates. Plant seeds in a single seed line in 12" apart raised beds at 18 inches apart at 1/8 inch depth.  Soil temperature for best germination 60F. Keep plants weed free and keep soil moist but not soggy.

Planting Depth: 1/8 inch
Within-Row Spacing:
12 inches
Between-Row Spacing:
18 inches


Care During the Season:

Watering: Water the plants enough to keep from wilting.
Weeding: Keep plants as weed-free as possible. When plowing or hoeing try to prevent cutting the feeder rooters which may slow the plant's growth.

Fertilizing: You may add a complete fertilizer to enhance growth. Work into the soil and leave the surface smooth. For small gardens, use 1/8 cup per 4 plants.

Insecticides: Insecticides may be used to protect plants. Bt-based insecticides and sulfur are organic options that can be used for prevention. Sulfur also has fungicidal properties and helps in controlling many diseases. Before using a pesticide, read the label and always follow cautions, warnings and directions.

Diseases: Check the plants daily and if spots or mold appear, treat the plant with an approved fungicide. Neem oil, sulfur, and other fungicides may be used. Please always follow label directions.


Celtuce leaves are ready 4-5 weeks after planting and can be picked at any time during the growing season. Celtuce leaves are less bitter earlier in the growing duration. Celtuce stalks can be harvested when no larger than 1" in diameter for best taste. Harvest stalks by using a knife to cut at the soil line. Keep top leaves on the celtuce until ready to prepare the stem.


Nutrition Facts:


Calories 18
% Daily Value*
Total Fat 0 g 0%
Saturated fat 0 g 0%
Polyunsaturated fat 0 g
Monounsaturated fat 0 g
Trans fat regulation 0 g
Cholesterol 0 mg 0%
Sodium 11 mg 1%
Potassium 330 mg 7%
Total Carbohydrate 3.6g 1%
Dietary fiber 1.7 g 7%
Sugar g
Protein 0.8 g 2%
Vitamin A
22% Vitamin C 23%
Calcium 4% Iron 4%
Phosphorus 16% Vitamin B-6 4%
Magnesium 6% Magnesium 8%
*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.