Find out what to do in your garden now.
- This month is a fast period of growth. Late frosts may catch early blooms and soft growth – remove any damaged growth.
- Spray roses with Rose Clear or similar.
- Continue to remove spent flowers of spring bulbs but not the foliage until it has withered and yellowed.
- Chelsea-chop time – If the nepeta and sedums are looking leggy then cutback by a third to encourage compact growth that will not collapse later in the season. This can be applied to the lavender, echinops, echinacea, aster, helenium and salvia too if felt necessary.
- Trim rosemary, thyme and sage if not done in April.
- Cutback withered daffodil or tulip stems once they have turned yellow.
- Trim grass edges of borders regularly to keep neat and tidy.
- Prune spring flowering clematis.
- Stake and support herbaceous perennials if necessary.
- If daffs gave a poor show lift and divide bulbs and replant.
- Continue deadheading spring bulbs.
- Start hardening off tender plants for planting out.
- Harvest Asparagus.
- Direct sow French beans and sweet corn if weather is warm enough.
- Start earthing up potatoes.
- Harvest early crops such as radish / lettuce etc.
- Avoid planting tomatoes too early as they suffer if exposed to temperatures below 12C
- Sow pumpkins, cucumbers, courgettes, squashes under cover now and outdoors towards the end of the month.
Written by: Alex Bell, www.alexbellgardendesign.co.uk
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