Plants to divide after flowering.

Clump-forming perennials can be divided if you want more stock, if the clump is overgrown, or if the plants need to be rejuvenated.

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

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

  • Rudbeckias

    Tough and reliable, rudbeckias provide spectacular fountains of color from summer and into autumn. By splitting the clumps, you can dot new colorful 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.

  • 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 will flower less prolifically over time, so it’s worth dividing them every few years.