Join the RHS today and support our charity
Free personalised gardening advice
RHS members get reduced ticket prices
RHS members get free access to RHS Gardens
Reduced prices on RHS Garden courses and workshops
020 3176 5800
Mon – Fri | 9am – 5pm
Make a donation
I have forgotten my password
Keep me signed in
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.
Don’t miss out - book in advance and save
Cover the surface of ponds with netting to stop fallen leaves from entering. Accumulated debris in the pond can encourage growth of algae and weeds, which will eventually harm the fish by reducing available oxygen levels.
Top up water levels when necessary, particularly during warmer weather, and continue to remove blanket and duckweed.
Remove dead leaves from waterlilies as the foliage dies back. Now is also a good time to divide waterlilies and other pond plants to increase stocks or control over-vigorous growth.
Overgrown marginal plants can just be cut back, if further stocks are not required. A maximum of 50 percent of the water’s surface should be taken up with planting.
Waterlilies can be prone to fungal problems such as crown rot and leaf spot, so nip any problems in the bud by dealing with them promptly. Remove affected leaves, reduce watersplash from fountains and, if necessary, repot the whole plant in fresh compost after first removing all rotten looking bits of root, stem and leaf.
You may need to thin out submerged oxygenating plants, as they can quickly build up and crowd the pond.
the RHS today and get 12 months for the price of 9
Things to do in the garden this month
Trees and shrubs
Greenhouse, conservatory and houseplants
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.
Join the RHS today and get 12 months for the price of 9