- Green Gardener
 - Offers products and advice on biological control of slugs, and other garden "enemies." - Henry Doubleday Research Association (HDRA)
- Researches, demonstrates, and promotes sustainable growing techniques, and offers the Heritage Seed Library.
- Organic Gardening in Northern Ireland
- Dedicated to organic gardening methods suitable for the Northern Ireland climate.
- Organic UK
- Offers practical support to organic gardeners by sharing experiences, passing on 'hints and tips, and providing links to other resources.
- Organics & Hydro UK
- Independent group offering practical support for organic gardeners.
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