Lettuce
55days to harvest
7-10days to germinate
Z2–11USDA zones
Easydifficulty
HeirloomContainer friendly

Sowing

Direct sow 1/4 inch deep. Can succession plant from spring through early fall. Thrives in cool weather but heat tolerant.

Cultivation

Sun
Full sun to partial shade (4-6+ hours)
Water
1 inch per week, regular watering
Soil
Well-drained, fertile soil with good organic matter
Soil pH
6.0-7.0
Spacing
6-8 inches
Height
6-12 inches
Season
Warm season annual

Appearance & flavour

Colour
Deep burgundy-red with green undertones
Size
8-10 inches across
Shape
Loose rosette with deeply frilled, ruffled leaves
Flavour
Mild, sweet, and tender with subtle mineral notes

In the kitchen

Colorful salad mixes, garnishes, microgreens, edible landscaping

Pests, disease & resistance

Pests
Aphids, flea beetles, leafminers, slugs
Diseases
Downy mildew, lettuce drop, bacterial soft rot
Resistance
Good heat tolerance and bolt resistance. Resistant to tipburn.

Planting calendar by USDA zone

ZoneStart indoorsTransplantDirect sowHarvest
1——June – JulyJuly – September
2——May – JulyJuly – September
3——May – JuneJune – October
4——April – JuneJune – October
5——April – MayJune – November
6——April – MayMay – November
7——March – MayMay – November
8——March – AprilApril – December
9——February – MarchMarch – 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 improves lettuce flavor while providing natural pest deterrent
CarrotsDeep roots don't compete with shallow lettuce roots, helps break up soil
RadishesQuick growth breaks up soil, repels flea beetles, harvested before lettuce needs space
MarigoldsRepels aphids, whiteflies, and nematodes while attracting beneficial insects
NasturtiumsActs as trap crop for aphids and cucumber beetles, edible flowers add garden interest
SpinachSimilar growing requirements, can be interplanted for succession harvests
GarlicNatural pest deterrent against aphids and slugs, doesn't compete for space
CilantroAttracts beneficial insects, provides shade during hot weather, similar water needs

Avoid

BroccoliHeavy feeder that competes for nutrients and creates too much shade for lettuce
FennelAllelopathic properties inhibit growth of lettuce and most other vegetables
SunflowersAllelopathic compounds suppress lettuce growth, creates excessive shade and root competition

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 New Red Fire?

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 New Red Fire suits these too.

Browse all 110 lettuce