Keeping pests away naturally

Sometimes looking after your garden is just a matter of harnessing the power of Mother Nature. Biological controls do away with damaging artificial pesticides by fighting garden pests with their natural predators, keeping your plants protected the way Nature intended.

They're surprisingly easy to use: some, such as the slug nematode Phasmarhabditis, mix with water to sprinkle on the ground; others, like the whitefly control Encarsia formosa arrive on cards to hang in the greenhouse.

Follow three main rules to make your biological control programme a success:

apply at the right time: greenhouse biological controls need at least 10°C at night to work, while outdoor controls such as slug nematodes are active above 5°C.

choose the right control: we have biological controls available for all sorts of pests in our garden centre, but each one only attacks one type of pest - so be sure what you're tackling first.

be patient: predators take several weeks to build up numbers before they start making a dent in your pest problem, so introduce them as soon as you notice the first signs of infestation. .

Please ask the staff at our garden centre in Guilsfield for more information and advice about biological controls to use in your garden.

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We offer help and great advice

Have a browse through some of our beautiful gardens or visit our superb farmshop full to the brim with fantastic local produce.

The Derwen, one of the finest independent garden centres in the country, is owned and run by the Joseph family, who also own the Dingle Nurseries and

Contact Info

Address:  Derwen Garden Centre,
Guilsfield, Welshpool, SY21 9PH
Office:(01938) 553015
Email:[email protected]


Opening Hours

Derwen Garden Centre sells a range of indoor and seasonal outdoor plants and bulbs and also gifts, bird food, tools and National Garden Vouchers.

Mon - Sat:9.30am - 5.30pm

Sunday:11am - 5:pm