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Grand Rapids — Lettuce | DarkGrow Seed Bank

Name: Grand Rapids
Brand: DarkGrow Seed Bank

45-55days to harvest

5-10days to germinate

Z2–11USDA zones

Very Easydifficulty

HeirloomContainer friendly

Sowing

Direct sow as soon as soil can be worked. Plant every 2-3 weeks through summer for continuous harvest.

Cultivation

Sun: Full sun to partial shade (4-6+ hours)
Water: 0.75-1 inch per week, moderate moisture
Soil: Adaptable to most soil types, prefers well-drained
Soil pH: 6.0-7.5
Spacing: 6-8 inches
Height: 6-12 inches
Season: Cool season

Appearance & flavour

Colour: Bright to medium green
Size: Individual leaves 4-6 inches, plant spreads 8-12 inches
Shape: Loose leaf with deeply curled, ruffled edges
Flavour: Mild, crisp, slightly sweet with tender texture

In the kitchen

Fresh salads, sandwiches, garnish. Perfect for cut-and-come-again harvesting.

Pests, disease & resistance

Pests: Aphids, slugs, snails, cabbage loopers
Diseases: Downy mildew, lettuce mosaic virus, bottom rot
Resistance: Excellent heat tolerance and slow to bolt

Planting calendar by USDA zone

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

Companion planting

8 beneficial pairings indexed for this variety, 3 to avoid.

ChivesRepels aphids and improves lettuce flavor while providing natural pest deterrent

CarrotsDeep roots don't compete with shallow lettuce roots, maximizes garden space

RadishesQuick-growing radishes break up soil and can be harvested before lettuce needs space

MarigoldsRepel nematodes, aphids, and other pests that commonly attack lettuce

GarlicNatural fungicide properties help prevent lettuce diseases like downy mildew

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

NasturtiumsTrap crop for aphids and cucumber beetles, draws pests away from lettuce

DillAttracts beneficial insects like ladybugs that prey on lettuce pests

Avoid

BroccoliLarge leaves create excessive shade and compete heavily for nutrients

SunflowersAllelopathic compounds inhibit lettuce germination and growth

TomatoesCreate too much shade and heat stress for cool-season lettuce

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.

Grand Rapids

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 Grand Rapids?

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