Bright-green frilly notched leaves form lofty 12–14" compact rosette. Stands heat better than Black Seeded Simpson, but at its best in cool weather, not summer. Has survived outside temperatures of 18° double-covered under Covertan PRO 19.
1952 AAS bred by Ross Thompson of the USDA.
Supplier Transparency:
② Family-owned companies or cooperatives, domestic and foreign
| Variety | Product Type | Hybrid Status | Cold Hardy | Days to Maturity |
|---|---|---|---|---|
|
Black Seeded Simpson Organic |
seeds | open pollinated | 42 days | |
| Salad Bowl | seeds | open pollinated | Yes | 46 days |
|
Salad Bowl Organic |
seeds | open pollinated | Yes | 46 days |
| Red Salad Bowl | seeds | open pollinated | 46 days | |
|
Red Salad Bowl Organic |
seeds | open pollinated | 46 days | |
|
Red Sails Organic |
seeds | open pollinated | 49 days | |
|
Australian Yellow Organic |
seeds | open pollinated | 50 days | |
|
Hyper Red Rumple Waved Organic |
seeds | open pollinated | 50 days | |
|
New Red Fire Organic |
seeds | open pollinated | Yes | 51 days |
| Slobolt | seeds | open pollinated | 53 days | |
|
Red Tinged Winter Organic |
seeds | open pollinated | Yes | 60 days |
|
De Morges Braun Organic |
seeds | open pollinated | 64 days | |
|
Merlot Organic |
seeds | open pollinated | Yes | 32 days baby, 60 mature |
|
Tango Organic |
seeds | open pollinated | Yes | 45 days |
From early May through mid-December, items shipping from our garden seeds warehouse ship twice a week, usually Tuesday and Thursday. For quickest turnaround time order online by noon Monday or Wednesday.
Culture: Direct seed outdoors as soon as ground can be worked and repeat every 2 weeks for continuous supply. Or start indoors in March and at regular intervals thereafter for early transplanted successions. Optimal germination temperature range 40–70° though many varieties won’t germinate in soil temps above 75° and most shut down above 80°. Thin sowings frequently and ruthlessly to a final distance of 1' for full heads. Heavy nitrogen feeders.
Hardy. All save icebergs tolerate heavy frost. Fall and overwintered harvests are becoming standard practice. For summer harvest, select varieties carefully: bolting, bottom rot and tipburn are problems if a variety can’t take the heat! Using shade cloth can keep lettuce tender and sweet longer into summer. Sesquiterpene lactones produced in the latex render lettuce bitter when it bolts.
Saving Seed: Saving lettuce seed is easy! Leave spring-planted lettuce heads to bolt. Flowers will become white tufted seeds. Once dry on stalk, rub seeds off the plant into a paper bag. To ensure true-to-type seed, separate lettuce varieties by 10 feet.
Diseases:
Pest: Aster Leafhopper (vector for Aster Yellows disease)
Cultural controls: control perennial broadleaf weeds near lettuce plantings, plow lettuce fields immediately after harvest.
Pest: Slug
Cultural controls: avoid mulch or nearby grassy areas.
Material: Sluggo
Disease: Bottom Rot
Cultural controls: rotate with grass-family green manures, plant in well-drained soil or on raised beds, more upright varieties escape infection.
Major Diseases: Downy Mildew, Grey Mold, White Mold
Cultural controls: rotation, reduce duration of leaf wetness, plant parallel to prevailing winds, use wide spacing, control weeds, use well-drained fields in spring and fall.
Material controls: MilStop
For the latest results of our germination tests, please see the germination page.
All of our seeds are non-GMO, and free of neonicotinoids and fungicides. Fedco is one of the original companies to sign the Safe Seed Pledge.
