Plants to divide after flowering

Dividing involves splitting an established plant into several pieces, each of which has a section of the roots.

Watch our video guide to dividing hardy perennials.

When planting your new plants, help them get off to a flying start by working in well-rotted organic matter and fertiliser into the new area, then firm and water in well.

Take a look at some of the plants to propagate by dividing after flowering, below.

Lamium

Lamiums are tough shade-loving perennials form mats of evergreen foliage, with flowers in summer. They make great ground-cover plants, so dig up and divide, then replant where cover is needed.

Rudbeckias

Tough and reliable, rudbeckias provide spectacular fountains of colour from summer and into autumn. By splitting the clumps, you can dot new colourful plants about the garden and rejuvenate the original plant.

Monarda

The popularity of bergamot with bees and other pollinators is just one of the many reasons to propagate them. Divide these vigorous plants to improve their flowering performance and keep large clumps from spreading too far.

Stachys

Stachys, or lambs' ears, will gradually spread to form large assemblages of silvery foliage, with purple-pink flowers. They're drought-tolerant and are brilliant wildlife-friendly ground-cover plants.

Hardy geraniums

By diving up your hardy geraniums, you'll be rewarded with a bounty of vigorous new plants. If you find you have a surplus, simply pot up spare divisions and give to friends or family.

Ajuga

These versatile plants can be divided up once they've finished flowering, to be replanted under trees and shrubs or in containers. Ajuga is another fantastic evergreen ground-cover plant.

Asters

Asters, such as Symphyotrichum novi-belgii 'Royal Ruby' (pictured), will flower less prolifically over time, so it's worth dividing them every few years.

Video: How to divide asters