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Summertime — Lettuce | DarkGrow Seed Bank

Name: Summertime
Brand: DarkGrow Seed Bank

70-80days to harvest

7-12days to germinate

Z2–11USDA zones

Moderatedifficulty

F1 hybridContainer friendly

Sowing

Direct sow in late spring through summer. Start indoors in hot climates and transplant. Provide afternoon shade in extreme heat.

Cultivation

Sun: Full sun to partial shade (4-6+ hours)
Water: 1.5 inches per week, consistent deep watering
Soil: Well-drained, fertile soil with excellent drainage
Soil pH: 6.0-7.0
Spacing: 10-12 inches
Height: 6-12 inches
Season: Warm season specialist

Appearance & flavour

Colour: Medium green outer leaves with pale green to white interior
Size: 6-8 inch diameter heads weighing 1-2 pounds
Shape: Tight, compact crisphead with firm heart
Flavour: Crisp, refreshing, mildly sweet with excellent crunch and no bitterness

In the kitchen

Salads, wedge salads, wraps, tacos, burgers. Excellent for any application requiring crisp texture.

Pests, disease & resistance

Pests: Aphids, slugs, snails, cabbage loopers
Diseases: Downy mildew, bottom rot, tip burn
Resistance: Exceptional heat tolerance and bolt resistance. Good tip burn resistance.

Planting calendar by USDA zone

Zone	Start indoors	Transplant	Direct sow	Harvest
1	—	—	June – July	August – September
2	—	—	May – July	August – September
3	—	—	May – June	July – October
4	—	—	April – June	July – October
5	—	—	April – May	June – November
6	—	—	April – May	June – November
7	—	—	March – May	June – November
8	—	—	March – April	May – December
9	—	—	February – March	April – December
10	—	—	January – March	April – December
11	—	—	January – February	March – December
12	—	—	January – February	March – December
13	—	—	January – February	March – December

Companion planting

9 beneficial pairings indexed for this variety, 2 to avoid.

ChivesRepels aphids and improves lettuce flavor while providing natural pest deterrent

CarrotsLoosens soil for lettuce roots and doesn't compete for nutrients due to different root depths

RadishesBreaks up compacted soil and deters flea beetles that can damage lettuce

MarigoldsRepels nematodes, aphids, and other pests while attracting beneficial insects

SpinachSimilar growing requirements and harvest times, efficient use of garden space

GarlicNatural fungicide properties help prevent lettuce diseases and repels various pests

DillAttracts beneficial insects like ladybugs and lacewings that control aphids

NasturtiumsActs as trap crop for aphids and cucumber beetles, drawing pests away from lettuce

ParsleyAttracts beneficial insects and doesn't compete for space due to compact growth habit

Avoid

BroccoliCompetes heavily for nitrogen and space, can shade lettuce and stunt growth

SunflowersAllelopathic effects inhibit lettuce germination and growth, plus creates too much shade

Nutrition (per 100 g)

Protein (g): 0.742
Fat (g): 0.0738
Carbohydrate (g): 3.37
Vitamin K (µg): 20.5
Vitamin B6 (mg): 0.0401
Calcium (mg): 14.2
Iron (mg): 0.0332
Magnesium (mg): 6.31
Phosphorus (mg): 19.2
Potassium (mg): 139
Zinc (mg): 0.173

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Where to buy seed and equipment

Some links are affiliate links. If you buy through them we may earn a commission at no extra cost to you.

Growing it? There is a full cultivation guide at the lettuce growing guide.

Cultivar facts compiled from public horticultural references including USDA GRIN and NC State Extension. Descriptions are original to this catalogue.

Summertime

Sowing

Cultivation

Appearance & flavour

In the kitchen

Pests, disease & resistance

Planting calendar by USDA zone

Companion planting

Avoid

Nutrition (per 100 g)

Where to buy seed and equipment

Grown Summertime?

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