Propagating Plants: Dividing Perennials

Use this method to propagate most herbaceous perennials and to rejuvenate large, tired clumps that no longer flower well.
Flourishing Perennials

Flourishing Perennials

Photo by: DK - How to Grow Practically Everything © 2010 Dorling Kindersley Limited

DK - How to Grow Practically Everything, 2010 Dorling Kindersley Limited

Dividing perennials, such as Achillea and Helenium , in early spring is an easy and economical way to fill large borders. After replanting, they will soon bulk up to form new flowering clumps.

From: DK Books - How to Grow
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Plants to Divide

  • yarrow
  • aster
  • bergenia
  • bellflower
  • geranium
  • Helenium
  • heuchera
  • hosta
  • iris
  • Ligularia
  • bee balm
  • catmint
  • phlox
  • Polemonium
  • lungwort
  • rudbeckia
  • sedum
  • speedwell

Dig Up Plant

In early spring, select a healthy clump of plants and water them well. Cut back any top growth to the ground. Using a fork, lift the clump, taking care to keep the whole root ball intact.

Dig Up Plant with Whole Root Ball Intact

Dig Up Plant with Whole Root Ball Intact

Photo by: DK - How to Grow Practically Everything © 2010 Dorling Kindersley Limited

DK - How to Grow Practically Everything, 2010 Dorling Kindersley Limited

Divide With Forks

Cut solid crowns into portions with a spade or old knife. If you can't pry other pieces apart by hand, use two forks back-to-back to split the clump into smaller sections, ready for replanting.

Keep Plants from Regrowing

Keep Plants from Regrowing

Photo by: DK - How to Grow Practically Everything © 2010 Dorling Kindersley Limited

DK - How to Grow Practically Everything, 2010 Dorling Kindersley Limited

Replant

Discard dead central portions of overgrown clumps. Replant healthy hand-sized pieces with strong buds in soil improved with well-composted organic matter. Water in well.

Replant Healthy Pieces

Replant Healthy Pieces

Photo by: DK - How to Grow Practically Everything © 2010 Dorling Kindersley Limited

DK - How to Grow Practically Everything, 2010 Dorling Kindersley Limited

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