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Monday 3 September 2012

This Month in Your Garden - SEPTEMBER

Bulbs and corms can go in now, in fact many will benefit from planting before the end of September and reward with a bright, early show as spring approaches.

Daffodils, crocuses, Anemone blanda, Fritillaria imperialis, irises, muscari, scillas and lilies should be planted on fairly rich, well worked soil but avoid dressing with manure. 

The bulbs will appreciate a dusting of bonemeal at about 4oz per square yard. Hold back planting tulips though until late October, early November, to help protect them from slug damage and ‘tulip fire’, the damaging fungus. 
Cuttings of tender perennial bedding plants can be taken before the frosts bite. Fuschias, marguerites, diascias, pelargoniums, petunias and osteospermum cuttings can be potted or put into modules and kept in a frost-free place at 7°C (45°F) to plant out in late May or June next year. Evergreen shrubs can be propagated from cuttings rooted in a frame or sheltered border. The prepared lawn bed should be seeded in early September to give the grass the best start before winter. Hardy annuals may be sown outdoors to flower in May and June next year. 

Around mid September prune rambler roses and plant evergreen shrubs. At the end of September, tomatoes are not likely to further ripen on the plants so pick them to ripen on a sunny window sill.

  • Take cuttings of bedding plants before the first frosts 
  • Dig borders, plant and divide hardy perennials 
  • Take cuttings of roses and sow seeds from rose hips 
  • Plant bulbs outdoors for next spring and summer 
  • Pot up fuschias from hanging baskets or in beds 
  • Give lawns a makeover, dealing with weeds and thatch 
  • Force hyacinths for Christmas 
  • Seed lawns or lay turf in prepared areas 
  • Pot cyclamen seedlings 
  • Over-winter tender perennials 
  • Arrange for any tree surgery that needs doing

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