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May Gardening Tips
It may be getting warmer during the daytime, but there is still a good chance of a night frost!
- Hoe-off weeds to prevent getting out of hand.
- Open greenhouse vents and doors on warm days.
- Set out the garden furniture on the patio and clean the barbecue... it could be sunny!
- Turn on the outdoor water supply.
- Buy stakes and supports in readiness for herbaceous plants, runner beans and tomatoes.
- Plant out chrysanthemums and dahlias.
- Plant out early annuals grown from seed, or bought as a young plants, after the risk of frost has gone.
- If required, divide hostas and agapanthus as they come into growth.
- Pinch out the young tips of growing plants to encourage bushiness.
- To encourage new growth, trim back spreading and trailing plants such as aubrietia and alyssum after flowering.
- Apply liquid fertilizer to bulbs after flowering for a good show of flowers next year.
- Tidy up or cut back Clematis Montana once it has finished flowering.
- Check all plants for pests and disease.
Fruit & Vegetables
- Greenhouse tomatoes are growing rapidly. Tie them in and liquid-feed regularly.
- Tie up new shoots of trained fruit trees.
- Sow beans and prepare supporting canes for runner beans.
- Plant early vegetable plants grown from seed outdoors once the danger of frosts has passed.
- Forced rhubarb stems can be harvested by gripping them firmly at the base, then pulling them sharply away from the crown.
- Beetroot and spinach can be thinned out.
- Earth up potatoes when they are approximately 23cm (92) high.
- Place a layer of straw mulch around strawberry plants and remove any unnecessary runners.
Trees & Shrubs
- Remove any newly-sprouted suckers from plants such as Rhus typhina.
- Tender container trees can be moved outdoors once the danger of frost has passed.
- Provided the weather is mild and the grass is growing, applications of fertilisers and weed killers can be made to established lawns.
- Depending on growth, begin regular mowing.