Crocosmia in bloom

Gardening advice for September

By Paul Hervey-Brookes, September 07

Gardening advice for September

Early September can be warm but Autumn is just around the corner and the days are getting shorter. Dahlias, Salvias, Asters, Crocosmia's and Japanese Anemones will all shine this month adding colour to the garden.

As the month progresses the weather can become unsettled with rain and strong winds and even some frosts. However should September turn into an Indian summer watering will still need to be done once or twice a week. Containers and hanging baskets very day. If you have recently planted large shrubs or trees or have large established plants such as camellias or hydrangeas an hours soak with a slow trickling hose will ensure healthy plants and blooms for next year.

Autumn is ideal for planting too as the soil is warm and moist and container grown trees, shrubs, perennials and bulbs can all be planted now. For successful planting (except bulbs) water well. Soak the rootball until air bubbles cease to show and fill the planting hole with water, allow to drain away and place the plant in. Fill with soil firming gently and water well.There are plenty of jobs that can be done during this month in preparation for Winter and also for Spring next year.

Spring bulbs can be ordered and Christmas flowering bulbs can be planted. Seasonal catalogues will be out now and you can while away a few hours picking out what you need.

In the garden roses need deadheading and the tall, leggy stems cutting back. The majority of these can be added to the compost heap but any diseased material should be burnt. This will ensure pests do not overwinter and appear with a vengeance next year.

With greenhouse crops over, give it a thorough clean so no pests overwinter in there. Dig over empty veg beds and add plenty of organic matter.

You should now have a head start on jobs to do during Autumn and Winter and have time to think about what winter hardy vegetables to sow over the next few months and of course perennials that you may like to experiment from seed with which require a cold spell to break dormancy.


Paul has his own highly successful landscape design business, and has also designed a range of gardening gifts for Marks and Spencers.

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