Organic Gardening
- Henry Doubleday Research Association - the premier society for the UK organic gardener
- The Cottage Herbery
Conservation Gardening
- National Council for the Conservation of Plants and Gardens - a National UK site giving all the information you will need on this organisation dedicated to the conservation of Garden Plants, which can fall out of favour and become threatened very quickly. Conservation through cultivation - if we stop growing garden varieties, they cease to exist.
- The Royal Horticultural Society - Britain's largest general gardening organisation
General Gardening
SPECIFIC PLANT GROUP OR GENUS WEBSITES
- Pelargoniums and geraniums - worldwide information of pelargoniums, known by many gardeners as "geraniums".
- Cistus - the website of the ex National Collection, with many photographs
- Mentha - an information website from the home of the National Plant Collection®
- Codonopsis - a website of the National Plant Collection®
- Collomia - to be found in the Polemoniaceae website
- Crocosmia with Chasmanthe - a website of the National Plant Collection®
- Crocus species - a website of the National Plant Collection®
- Dahlia - a website of the National Plant Collection®
- Diascia - a website of the National Plant Collection®
- Erigeron - a webpage listing the plants in this National Plant Collection®.
- Fritillaria - a webpage on this a National Plant Collection®
- Geranium species & primary hybrids - a website of the National Plant Collection®
- Hardy Geranium - a webpage on this National Plant Collection® at Cambridge University Botanic Gardens.
- Gilia - to be found in the Polemoniaceae website
- Helenium - a website of the National Plant Collection®
- Jovibarba - a website of the National Plant Collection®
- Lavandula - a website of the National Plant Collection®
- Leptodactylon - to be found in the Polemoniaceae website
- Paphiopedilum - a website of this ex National Collection
- Phlomis - a website of the National Plant Collection®
- Phormium - a website of the National Plant Collection®
- Polemomium - to be found in the Polemoniaceae website.
- Pterocactus - a website of the National Plant Collection®
- Rhapis - a website of the National Plant Collection®
- Rosularia - a website of the National Plant Collection®
- Sempervivum - a website of the National Plant Collection®
- Tricyrtis - a webpage of the names of the plants to be found in this National Plant Collection®
- Tricyrtis - a webpage of information of this second Tricyrtis National Plant Collection®
- Trillium - a website of the National Plant Collection®
- Tulipa - a webpage on this National Plant Collection® at Cambridge University Botanic Gardens.
Vegetarian
- The Vegan Society
- The Vegan Organic Network - stockfree Horticulture and Agriculture