Join the RHS today and support our charitable work
Free personalised gardening advice
RHS members get reduced ticket prices
RHS members get free access to RHS Gardens
Free entry to RHS members at selected times »
Reduced prices on RHS Garden courses and workshops
020 3176 5800
Mon – Fri | 9am – 5pm
Help us achieve our goals
Join the RHS today and support our charity
I have forgotten my password
Register for free to receive our newsletters, add comments to blogs/articles and to save content.
See what events are on near you and browse your bookmarked pages.
Britain has about eight to ten species of earthworms that are likely to be found in gardens. They vary in size and colour, but all have a role to play in creating good soil structure and fertility.
Soil casts from earthworms (Allolobophora sp. These can be a nuisance, particularly when they are smeared with a mower. Allow them to dry and brush them away before mowing.
Earthworms are a familiar sight to gardeners and are useful in maintaing healthy garden soils;
Find out more about earthworms and participate in earthworm research at Earthworm Watch and the Earthworm Society of Britain (links to external websites)
Some earthworm species live in accumulations of organic matter, such as compost heaps. One such species is Eisenia fetida (brandling or tiger worm), recognisable by its stripy appearance, another is Dendrobaena veneta. These are the species most commonly used in wormeries, as their feeding activities speed up the composting process.
Worm casts consist of soil and waste excreted by the worms as they feed on organic matter. Worm casts can be a nuisance on lawns and gravel paths.
This year the Wild About Gardens campaign, run jointly by the RHS and The Wildlife Trusts, is gearing gardeners up to go wild for worms. Learn how to encourage earthworms in your garden and download your free earthworm pack from the Wild About Gardens website.
Chafer grubs in lawnsCompostingEarthworm Society of BritainEarthworm Watch citizen science surveyLeatherjackets MillipedesSoil typesSoil cultivationWorm casts in lawnsWorm composting
the RHS today and get 12 months for the price of 9
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
We're a UK charity established to share the best in gardening. We want to enrich everyone's life through plants, and make the UK a greener and more beautiful place.