Lettuce
harvesting lettuce

Head Lettuce Succession Planting Program

Full-sized heads of lettuce are an essential product to have on hand, whether at home, at market, for CSA shares, or the farmstand. Variety selection is key in providing your customers with a continuous supply. To develop your production strategy, use the recommended program outlined below as a guide to choosing early season, mid season, and late season head lettuce varieties. We also offer recommendations based on our trials for all-season/year-round head lettuce production.

See also our notes on heat tolerance and lettuce downy mildew.

Head Lettuce Succession Planting & Harvesting Chart

key Key Transplant Harvest
Type Variety Cool/Spring Warm/Summer Cool/Fall Cold/Winter
Butterhead
Green 'Nancy'
'Adriana'
'Milagro'
Red 'Red Cross'
'Skyphos'
'Marciano'
Leaf
Green 'Bergam's Green'
'Tropicana'
'Starfighter'
Red 'New Red Fire'
'Ruby Sky'
'Shirane Sky'
One-Cut
All Salanova®
Romaine
Green Hearts 'Sparx'
'Sunland'
'Bluerock'
Green 'Green Forest'
'Salvius'
'Monte Carlo'
'Chalupa'
Red 'Pomegranate Crunch'
'Thurinus'
Summer Crisp/Batavia
Green 'Muir'
'Gordini'
Red 'Magenta'
'Cherokee'
True Mini
All True Minis

Notes

Heat Tolerance

Even heat-tolerant varieties have upper limits of temperatures they can withstand. At lower latitudes and in geographic pockets of intense summer heat such as the South and Southwest, growers may suspend field planting of lettuce during the warmest part of the season.

Lettuce Downy Mildew

Cultivated lettuce is the main host of this pathogenic water mould (Bremia lactucae). With its multiple, ever-evolving races, it is most common where lettuce is grown intensively year-round and spreads readily during cool, damp weather. The spores are wind-dispersed and infect outer leaves first, but can spread rapidly in the field and post-harvest. For best success:

  • Choose varieties with the highest, most comprehensive list of isolate resistances across the following ranges: EU 16–36 and US 5–9.
  • Focus prevention and control measures on your riskiest planting slots (fall, early winter) and locations (tunnels, beneath row cover).
  • Trial new varieties to determine best performance, as isolate pressure varies by region.

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