Lettuce
65-75days to harvest
7-10days to germinate
Z2–11USDA zones
Easy to moderatedifficulty
F1 hybridContainer friendly

Sowing

Direct sow 2-4 weeks before last frost, or start indoors and transplant. Fall plantings often produce the best quality heads.

Cultivation

Sun
Full sun to partial shade (4-6+ hours)
Water
1-1.5 inches per week, consistent moisture
Soil
Well-drained, fertile soil with good organic content
Soil pH
6.0-7.0
Spacing
8-10 inches
Height
6-12 inches
Season
Cool season

Appearance & flavour

Colour
Medium to dark green with pale green to white ribs and heart
Size
10-12 inches tall, 6-8 inches wide at base
Shape
Upright, cylindrical romaine head with thick, sturdy leaves
Flavour
Sweet, crisp, and crunchy with no bitterness and excellent texture

In the kitchen

Caesar salads, grilled romaine, wraps, lettuce boats, any recipe requiring sturdy lettuce structure.

Pests, disease & resistance

Pests
Aphids, slugs, snails, cabbage loopers
Diseases
Downy mildew, bottom rot, tip burn, lettuce drop
Resistance
Excellent bolt resistance and tip burn tolerance. Good downy mildew resistance.

Planting calendar by USDA zone

ZoneStart indoorsTransplantDirect sowHarvest
1——June – JulyAugust – September
2——May – JulyJuly – September
3——May – JuneJuly – October
4——April – JuneJuly – October
5——April – MayJune – November
6——April – MayJune – November
7——March – MayMay – November
8——March – AprilMay – December
9——February – MarchApril – December
10——January – MarchMarch – December
11——January – FebruaryFebruary – December
12——January – FebruaryFebruary – December
13——January – FebruaryFebruary – December

Companion planting

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

ChivesRepels aphids and other pests while improving lettuce flavor
CarrotsLoose deep roots don't compete with shallow lettuce roots, maximizes space usage
RadishesQuick-growing companion that breaks up soil and deters flea beetles
MarigoldsRepels nematodes, aphids, and other harmful insects naturally
GarlicStrong scent deters slugs, snails, and aphids that commonly attack lettuce
SpinachSimilar growing requirements and helps shade soil to retain moisture
DillAttracts beneficial insects like ladybugs that control aphids
NasturtiumsActs as trap crop for aphids and cucumber beetles, drawing pests away

Avoid

BroccoliLarge leaves create excessive shade and compete heavily for nutrients
ParsleyCan attract carrot flies and competes for similar soil nutrients
SunflowersAllelopathic effects inhibit lettuce germination and growth

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

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.

DarkGrow forum

Grown Canasta?

Post a crop report — day counts, reservoir readings, what worked. Variety-specific logs are the most useful thing on the forum.

Similar varieties

Other lettuce with a comparable time to harvest, so a season that suits Canasta suits these too.

Browse all 110 lettuce