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Overview
Shrubs and perennials planted permanently in containers need good quality compost if they are to survive for more than a couple of years. The addition of loam-based compost such as John Innes no.3 will retain a good open structure for plant roots to obtain air as well as moisture. In addition, they'll be relying on you for nutrients so it's a good idea to add a slow-release fertiliser.
Do it:
all year round
Takes just:
30 minutes
How to do it
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Ensure good drainage by putting a layer of broken terracotta pot or large stones over the holes in the base of the pot. -
Put a layer of an equal parts mix of John Innes no.3 and multi-purpose compost in the base of the container and add a handful of slow-release fertiliser granules. Mix them into the compost. -
Knock the plant from its pot and set it in the container. Add more compost under the plant to raise the top of the rootball to about 2cm - 3cm below the rim of the container. Fill around the rootball with more compost mix, firming it in layers as you fill. -
Aim for the finished compost level to be 2cm - 3cm below the rim of the pot. This will allow you to water the plant thoroughly. -
Add a layer of decorative crushed stone or pebbles to the surface of the compost. This mulch will look attractive and help conserve moisture in the container.
