September - topical tips

The flower garden

  • Sow hardy annuals, such as cerinthes, ammi, scabiosa and cornflowers, for flowers early next summer

  • Lift gladioli corms, dry them off, then store in a frost-free shed or garage over winter

  • Lift, divide and replant congested clumps of perennials, such as achilleas, once they finish flowering

The veg patch

  • Sow hardy greens, such as kale, land cress, pak choi, mizuna, lamb's lettuce and mustard, for winter pickings

  • Prune out all the fruited canes of summer raspberries, cutting down to the base, and tie in new canes to supports

  • Pot up herbs, such as chives and parsley, and place on a sunny windowsill to use during winter

Green gardening

  • Collect ripe seeds from your favourite flowers and store in labelled envelopes, ready to sow in springWater new trees, shrubs and perennials planted in spring, to help them through dry spells

  • Collect up and bin apples, plums and pears infected with brown rot, to reduce the spread of this fungal disease

For more freely available β€˜in your garden’ tips from the RHS click here

Planting advice from Gardeners World click here

Advice from Sarah Raven for this month in your garden