Romaine lettuce

Lactuca sativa var. longifolia romaine lettuce
Other names
romaine lettuce
Botanical name
Lactuca sativa var. longifolia
Plant category
Leaf Salad
Romaine lettuce

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Facts and figures

Light requirements
Sun / partial shade
Nutrient requirements
Medium feeder
Difficulty level
Easy
Culture (according to Gertrud Franck)
C - low growth, short growing period
Growing period
50 days
Row spacing
20 cm
Plant spacing
20 cm
Growth height
20 - 30 cm
Sowing depth
1 cm
Germination temperature (minimum)
3 °C
Germination temperature (optimal)
15 - 18 °C
Germination type
Light
Pre-growing period
30 days

Times

1
2
3
4
5
6
7
8
9
10
11
12
Direct sowing
Pre-grow
Transplant
Harvest

OutdoorsDirect sowing from Late March to Mid September. Transplant to bed from Late March to Mid September. Pre-grow about 30 days before planting out, approximately between Late February and Mid August. After a growing period of 50 days, harvest can begin around Late May and continues until Mid October.

GreenhouseDirect sowing from Late February to Late March. Transplant to bed from Late February to Mid April. Pre-grow about 30 days before planting out, approximately between Late January and Mid March. After a growing period of 50 days, harvest can begin around Mid March and continues until Late May.

Neighbourhood

Good neighbours
Bad neighbours

Crop rotation

Good predecessors
Bad predecessors
Good successors
Bad successors
Very bad successors