PlantSowGrow
How to grow Lettuce (Iceberg)
Lactuca sativa
🥕 Vegetable
🌱 Grown each year
The classic crisp, pale-hearted crisphead lettuce. Needs steady watering to form big, tight heads.
At a glance: Sow early April to late June, harvest from mid June.
When to sow, plant and harvest
JanFebMarAprMayJunJulAugSepOctNovDec
Sow outdoors
Harvest
Timed for a typical UK garden (last frost mid-April). The app uses your own town's frost dates.
Growing Lettuce (Iceberg): what it needs
- Light
- Full sun · 6+ hours a day
- Watering
- Water regularly — dry spells make it bolt or go bitter
- Soil
- Fertile, well-drained soil
- Spacing
- 30 cm
- In pots
- Grows well in containers
- Feeding
- A general feed before sowing or planting
- Harvest
- About 80 days from sowing
- Hardiness
- USDA zones 3–9
- Difficulty
- Easy
Step by step
- Early April – late June · 2 weeks before the last spring frost
Sow Seeds Outdoors
Sow thinly in drills where they are to grow.
- 4–10 days after “Sow Seeds Indoors” · Early April – mid April
Check Germination
Seedlings should appear in 4–10 days. If sown outdoors, thin to 30 cm apart when big enough to handle.
- 70–91 days after “Check Germination” · Mid June – early July
Start Harvesting
Cut when the heart is firm when pressed gently.
- 21–51 days after “Start Harvesting” · Early July – early August
Finish and Clear
Clear the remains to the compost heap once cropping ends.
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