Help us achieve our goals:
make a donation »
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
Join the RHS today and support our charity
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.
Although it's simple to do, soil care reaps rich rewards
Whatever your soil type there will be plants that love it and treatment that will help it. Make sure you know what is best for your garden soil.
Aucuba (spotted laurel) is recommended for its robustness and ability to grow in dry, shaded sites. However, despite this reputation, Aucuba can become stressed such as when its roots become waterlogged during cold, wet winters, for example, and as a result the leaves and shoot tips turn black.
Alkaline soils are widely distributed in Britain, and many of these will be derived from chalk or limestone and are commonly referred to as chalky. Although they include Britain's most productive agricultural soils they can be a challenge to garden. Chalky soils are often shallow, stony and free-draining, and added organic matter can decompose rapidly, making them difficult to keep fertile.
Poor growth and yellowing leaves (chlorosis) are a result of the plants not being able to absorb iron and manganese by their roots. Choosing plants that thrive in alkaline conditions is the best way forward.
Chalky soils are alkaline and free-draining, and the depth of soil over chalk varies considerably. The key to gardening in these often drought-prone and nutrient poor soils is to select from the wide range of colourful plants that thrive in dry summers, need sharp drainage and moderate to low fertility.
Limestone soils have similar characteristics.
Poultry manure is often sold in dried and pelleted form by garden centres and is a good non-chemical fertiliser. Dried, pelleted and powdered forms are distinct from fresh domestic poultry litter, which is best used on the compost heap.
Soils rich in fine clay particles are called ‘heavy soils’ and, although hard to manage, are also potentially very fertile when treated in the right way.
Without some intervention, clay soils can be like concrete in summer and a sticky mess in winter. Any effort to improve the texture of clay will be rewarded with strong plant growth. This soil is rich in nutrients and will happily accommodate a considerable range of plants.
Double digging may be hard work but it is perfect for creating new borders and deepening shallow topsoil.
Britain has about 16 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.
The contents of fertilisers, as described on the packet can seem quite daunting. However, labels explain the composition and nutrient content of the product, helping you to decide what you need to buy and how best to use it.
Fertilisers are concentrated sources of plant nutrients, usually in compact form such as pellets, granules, powders or liquids. They are used to improve plant growth and yields.
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