How to Grow Simpson Elite
Lactuca sativa 'Simpson Elite'
Lactuca sativa 'Simpson Elite' is a reliable cool-season lettuce variety prized for its rapid growth and excellent resistance to bolting under warmer conditions. Gardeners value this hybrid for consistent head formation, strong downy mildew tolerance, and suitability in containers or large garden beds across diverse USDA zones.
📷 Wikipedia: LettuceStarting Simpson Elite: indoors or direct sow?
🏠 Start indoors 3 weeks before your last spring frost, then move the seedlings outside.
You can start seeds indoors three weeks before the last frost date, then harden off and transplant seedlings outdoors once they are sturdy enough to handle cooler temperatures.
Soil, care & harvest
Prepare loose, well-draining soil with a pH between 6.0 and 7.0 to support healthy root development. As a cool-season crop, sow seeds directly outdoors or start them indoors 2 to 6 weeks before your last expected spring frost date. Press the small seeds gently into the soil surface at a depth of roughly 1/4 inch, then water lightly. Expect germination to occur within 7 to 10 days under consistent moisture.
Space seedlings 6 to 8 inches apart once they emerge to ensure proper air circulation and head size. While lettuce does not require staking or trellising, maintain consistent soil moisture by providing about 1 to 1.5 inches of water weekly. Apply a light layer of organic mulch around the base to retain moisture and suppress weeds, but keep it away from touching the leaves to prevent rot.
Watch for aphids, slugs, snails, flea beetles, and leaf miners; use row covers or hand-picking to manage these pests early. Monitor plants for downy mildew, bottom rot, and lettuce mosaic virus by ensuring good airflow and avoiding overhead watering. Harvest outer leaves or whole heads when plants reach maturity in 45 to 55 days after sowing.
When to Plant Simpson Elite
Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.
| Zone | Start Indoors | Direct Sow | Harvest |
|---|---|---|---|
| Zone 1 | — | June – July | July – September |
| Zone 2 | — | May – July | July – September |
| Zone 3 | — | May – June | June – October |
| Zone 4 | — | April – June | June – October |
| Zone 5 | — | April – May | June – November |
| Zone 6 | — | April – May | May – November |
| Zone 7 | — | March – May | May – November |
| Zone 8 | — | March – April | April – December |
| Zone 9 | — | February – March | March – December |
| Zone 10 | — | January – March | March – December |
| Zone 11 | — | January – February | February – December |
| Zone 12 | — | January – February | February – December |
| Zone 13 | — | January – February | February – December |
Companion Plants for Simpson Elite
✓ Good companions
Root depth complements shallow lettuce roots, maximizes garden space efficiency
Repels aphids and improves lettuce flavor while providing natural pest deterrent
Attracts beneficial insects like ladybugs and lacewings that control lettuce pests
Natural fungicide properties help prevent damping-off and other soil-borne diseases
Deters nematodes, aphids, and whiteflies while attracting beneficial insects
Acts as trap crop for aphids and cucumber beetles, protecting lettuce from pest damage
Quick-growing crop that loosens soil and can be harvested before lettuce needs full space
Similar growing requirements and can provide wind protection for tender lettuce leaves
✗ Keep away from
Competes heavily for nutrients and creates too much shade for optimal lettuce growth
Releases allelopathic compounds that inhibit germination and growth of lettuce
Creates excessive shade and competes aggressively for water and soil nutrients
Nutrition Facts
Per 100g serving (USDA FoodData Central)
