Whether mowing or mulching, there's plenty to do in the garden this month
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| Trim box hedging with shears
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'Take cuttings of shrubs and herbs such as thyme and lavender'
Beds and borders
MULCHING: Top up mulched areas. Try to do this immediately after a rainfall to make the most of the moisture.
PERENNIALS: Deadhead perennials that have finished flowering. This encourages further blooms and will extend their season.
PLANTING: Weed and plant through borders, where required, and incorporate compost. Fill gaps outside by planting new purchases. Do this when the soil is moist, using garden compost and then water in well.
PRUNING: Prune early-flowering shrubs such as Choisya, Cytisus, Deutzia, Philadelphus, Syringa and Weigela, once they have completely finished flowering.
- Cut back flowering stems of herbaceous Potentilla, hardy geraniums and foxgloves once they have finished flowering.
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Remove suckers from roses such as 'Geoff Hamilton'
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- Save seeds by leaving spent flowerheads on plants – but cut back flowered stems of hardy geraniums and
Alchemilla mollis if they start to look a bit ragged.
- Prune long wisteria stems back to five or six leaves on the main stem. This should result in healthy flowers for spring.
ROSES: Tie in rambling and climbing roses to prevent wind damage to new shoots. Deadhead as blooms fade, unless you want hips in the autumn.
SUCKERS: Remove suckers from roses, prunus, and sorbus to stop the plants spreading through your beds.
WATERING: Water new plants in the morning during dry and breezy spells.
General jobs
APHIDS: Spray infestations of aphids with soap solution every third day until all signs of the pest have gone. Roses, lupins and plants under glass will be worst affected.
CONTAINERS: Deadhead and water potted plants and feed flowering plants with seaweed.
CUTTINGS: Take cuttings of shrubs and herbs such as thyme and lavender. Remember to pot up any softwood cuttings taken earlier in the year.
DEADHEADING: Deadhead all flowers that have finished, if seed is not required.
HEDGES: Cut hedges, such as beech, escallonia, hornbeam and yew. Trim box hedges using shears.
LAWNS: Mow, strim and edge the lawn. If it's a hot day, leave the clippings on the lawn to act as a protective mulch.
PONDS: Top up ponds and water features regularly and remove any blanket weed. Keep bird baths topped up.
Patios & courtyards
CONTAINERS: Give a liquid feed to crops growing in pots and containers – about once a week unless the fertiliser instructions suggest otherwise.
Deadhead plants in baskets, pots and containers to prevent them from setting seed. Also remove any diseased stems and foliage.
Watering is vital for plants grown in containers and pots. If you are going away, arrange for a friend or neighbour to do the watering. Group pots in a shady place, or set up a water reservoir and capillary matting watering system.
CUTTINGS: Take cuttings of shrubs and herbs such as thyme and lavender. Remember to pot up any softwood cuttings taken earlier in the year.
DEADHEADING: Deadhead all flowers that have finished, if seed is not required.
HEDGES: Cut hedges, such as beech, escallonia, hornbeam and yew. Trim box hedges using shears.
LAWNS: Mow, strim and edge the lawn. If it's a hot day, leave the clippings on the lawn to act as a protective mulch.
PANSIES: Cut back straggly early-flowering flowers, such as pansies, and give them a liquid feed.
TRANSPLANTING: Transplant any biennial or wallflower seedlings sown last month to a nursery bed. Water the ground first (or wait until there has been a shower) then lift them. Replant in the bed, about 15cm (6in) apart. Keep them well-watered and weed-free so they can grow away, ready for their final positions in the autumn.
Look further
Nick and Sue Hamilton run
Barnsdale Gardens in Rutland, Leicestershire, formerly owned by the late Geoff Hamilton.
* Photography: Redshift Photography