Plant Height
Up to 30cm/12" depending on variety
Time between sowing and harvesting
6-14 weeks Depending on Variety
Where to Sow
Outdoors in open ground or in containers
Sowing time
Late March to July - temperature +10C/50F.
How to Sow
12mm/1/2-inch deep - very thinly - in rows 30cm/12" apart or in groups/blocks or in containers. Successive sowing is recommended to prevent a glut. Sow a few seeds every 2 weeks.
After Germination
Start thinning seedlings when the 1st true pair of leaves appear. Protect from slugs. Keep the soil moist but not very wet
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Growing on - in Pots
Gradually thin to final spacing depending on variety grown (between 7.5cm/3 inches for salad leaf varieties up to 30cm/12" apart for whole cabbage/cos varieties)
Growing on- in ground
As above
Aftercare
Keep the soil moist with regular watering, preferably before mid afternoon. Continue to protect from slugs
Harvesting
Cut whole heads once the hearts have firmed up. With loose leaf and baby leaf varieties, cut a few leaves from the outsides of each plant at any once time. These crop over 16-20 weeks.
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