10 Tips on Dividing Perennial Plants | Fine gardening

10 Tips on Dividing Perennial Plants | Fine gardening

10 Tips on Dividing Perennial Plants | Fine gardening

By Todd Meier

When dividing perennials, timing and technique are important. And while many perennials may be divided in either early spring or early fall, some are very picky. The optimal time to divide specific perennials is denoted by (S) for spring and (F) for early fall. The single asterisk indicates that division should take place after the plant flowers. Two asterisks mean that protective gloves should be worn when dividing the plant, since its sap may irritate skin.

Divide these plants by hand
Blanket flowers (Gaillardia spp.) S / F
Bleeding hearts (Dicentra spp.) S * - Bugleweed (Ajuga reptans) S / F
Columbines (Aquilegia spp.) S / F
Coral bells (Heuchera spp.) S / F
Cranesbills (Geranium .) S / F
Creeping Jenny (Lysimachia nummularia) S / F
Deadnettle (Lamium maculatum) S / F
Epimediums ( Epimedium spp.) S * / F
Foam flower > (Tiarella cordifolia)
S / F
Forget-me-not Myosotis sylvatica S * / F
Helleborus spp.) S * / F
Jacob's ladder (Polemonium caeruleum) S / F
Lady's mantle F

> Primroses (Primula spp.) S *
Pulmonary (Pulmonaria spp.) S * / F
Pussytoes (Antennaria dioica) S / F
Sea thrift (Armeria maritima) S / F
Speedwell Stonecrop (Sedum spectabile) S / F (Stonecrop)
Sweet woodruff (Galium odoratum) F
Violets, pansies Viola spp.) Wormwood (Artemisia ludoviciana) / em> S / F
Yarrow (Achillea millefolium) S / F

Slice apart woody crowns with a handsaw
Ammonia (Acanthus spinosus)

S / F
Doll's eyes (Actaea pachypoda) S
Foxtail lilies Eremurus spp.) F
Gayfeather (Liatris spicata) S / F
Goatsbeard (Aruncus dioicus) S / F by Joe Pye weed (Eupatorium maculatum) S / F
Lilyturf (Liriope spicata) S / F
Male fern < > S / F
Meadowsweets (Filipendula spp.) S / F
Peonies (Paeonia cvs.) F
Solomon's seal (Polygonatum odoratum) S / F
Wild indigo <(Baptisia australis) S * / F

Cut up rhizomes and tubers with a knife > Arum (Arum italicum) F
Bergenia <(> Bergenia cordifolia) S / F
Caladiums (Caladium spp. ) S
Calla lily (Zantedeschia aethiopica) S Cannas (Canna spp.) S
Corydalis (Corydal is lutea) S / F
Dahlias (Dahlia cvs.) S
Elephant ears (Alocasia spp.) S
Irises < (Iris spp.) F
Lady fern <(Athyrium filix-femina) S / F
Lily of the valley (Convallaria majalis) S / F
Rhubarb (Rheum palmatum) S Rodgersia (Rodgersia pinnata) S / F
Spurge (Euphorbia griffithii) S / F **
Wild ginger (Asarum europaeum) S

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