I try to harden off
for a week to 10 days, depending on how "soft" the plants were initially and the weather conditions.
Transplant seedlings once the first leaves have formed and harden off
before planting out at the end of spring, placing the seedlings around 30cm (12in) apart in rows 45cm (18in) apart.
Start standing bedding plants outside on warm, fine days to help them harden off
n Harden off
aubergines, marrow, peppers, pumpkins and tomatoes grown from seed before planting outside.
autumns own cauliflowers as conditions allow to be ready for planting out next month.
young plants, such as leeks, calabrese, cauliflower, pansies and penstemons, which have been in frames.
When the first two leaves are welldeveloped, gradually harden off
before planting out - but don't do it too soon as they are frost-tender.
hanging baskets and window boxes, ready to put into position outdoors when all danger of frost is over.
n Continue to harden off
hanging baskets and other annuals in containers ready to put outdoors when all danger of frost is past
autumn-sown cauliflowers being over-wintered in frames so they will be ready for planting out in March.