Perry's Perennial Pages

Propagation Methods for Herbaceous Perennials--G

A | B | C | D | E | F | G | H | I, J, K | L | M | N, O | P | R | S | T | U,V,W, X,Y,Z

The following table contains temperate and sub-tropical (to USDA zone 9) herbaceous genera and species. Some may be quite rare and only found on a continent or country such as Australia or South Africa. Due to variations in references, some may contain more than one comment or time period for a method.

Methods of Propagation:
S = seed LC = leaf cutting
SC = stem cutting L = layering
RC = root cutting TC = tissue culture or micropropagation
D = division

This table is an updated and expanded version of the printed version which can be found in the NRAES book by Dr. Leonard Perry, Herbaceous Perennial Production.  Appreciation is expressed to Andrea Luchini, graduate assistant, for most of this update.


Scientific Name

Common Name

Methods of Propagation

Time Period

Comments/Requirements

Gagea sp.

 

S

 

 

 

 

D

 

offset bulbs

Gaillardia sp.

Blanket Flower

S

spring

dwarf cvs may be variable

 

 

SC

spring

 

 

 

RC

early spring

or root sprouts, cvs

 

 

D

spring, fall

use care

Galanthus sp.

Snowdrop

 

 

bulb cuttage, twin scaling

 

 

S

 

ripe, 4 years to flw, protect from ants

 

 

D

fall

offset bulblets, or after flw

Galax

 

S

 

plant in flat of moss in spring, let drop seed and pluck out seedlings next spring

Galax urceolata

Coltsfoot

D

early spring

use care, roots and stolons, slow

 

 

RC

 

rhizomes

 

 

S

spring, fall

slow

 

 

SC

summer

leaves with stem section

 

 

TC

 

slow

Galega sp.

Goat's Rue

D

spring, fall

of crowns

 

 

SC

early spring

basal

 

 

S

 

 

Galeobdolon: see Lamium

 

 

 

 

Galium sp.

Bedstraw

S

late summer

not common in US, fresh

 

 

SC

 

 

 

 

D

 

stoloniferous roots

G. odoratum

 

SC

 

leaf node touching surface; place cutting first then put media around; rooting hormone will help

Galtonia sp.

Summer Hyacinth

S

 

ripe

 

 

D

 

offsets

G. candicans

 

TC

 

 

Gaura lindheimeri

 

D

 

dormant crown

 

 

D

spring

clumps

 

 

S

 

usually true to type

 

 

SC

summer

 

Gazania sp.

Treasure Flower

D

 

clumps after 3-4 years

 

 

S

early spring

 

 

 

SC

summer

heel

Gentiana sp.

Gentian

S

 

delicate seedlings; most sp., ripe

 

 

TC

 

 

 

 

D

 

few sp. only

 

 

L

 

 

 

 

SC

April-May

sp. without rosettes or taproot

G. sino-ornata, acaulis

 

D

spring

 

G. verna, sino-ornata

 

SC

spring

 

G. farreri, veitchiorum

 

L

 

 

Geranium sp.

Cranesbill

RC

 

rot if overwatered; allow buds to form at 100% humidity prior to planting

 

 

RC

spring, fall

rhizomes, some sp.

 

 

SC

spring-fall

firm shoots, basal

 

 

D

spring, fall

easy before fully leafed

 

 

S

 

species only

G. 'Buxton's Blue'

 

S

 

 

G. cantabrigiense 'Karmina'

 

SC

 

leave only 1 small leaf and small bit of root so no rot

G. cinereum, incanum, sanguineum

 

SC

spring

 

G. sanguineum

 

SC

fall

 

G. soboliferum

 

SC

spring

 

G. cinereum, sanguineum

 

RC

fall

 

G. magnificum, oxonianum, pratense, wlassovianum, 'Rozanne', 'Spinners'

 

SC

spring

Y cuttings - cut 1" below y-node, in morning, use rooting powder, will root in 18 days

Gerbera jamosonii

Transvaal Daisy

S

 

use fresh seed

 

 

SC

 

basal shoots of rhizome

 

 

TC

 

from shoot tips

Geum sp.

Avens

S

 

may not come true

 

 

D

spring, fall

cultivars, easy

Gillenia (Porteranthus) sp.

Bowman's Root

S

spring, fall

 

 

 

D

spring

 

 

 

SC

 

tip

Gladiolus sp.

Gladiolus

TC

 

 

 

 

S

 

species

 

 

D

 

offset cormlets

Glaucidium palmatum

 

S

 

 

 

 

D

spring

use care

Glaucium sp.

Horned Poppy

S

 

 

 

 

D

 

short-lived, difficult to transplant

Glechoma hederacea

Ground Ivy

SC

spring, summer

stem tip or softwood

 

 

S

fall

 

 

 

D

spring, fall

 

Globularia sp.

Globe Daisy

S

 

ripe

 

 

D, SC

 

 

Gloriosa superba

Glory Lily

TC

 

from tuber explants

 

 

S

late winter

sandy mix

 

 

D

spring

use care, or offsets, toxic

Glyceria sp.

Sweet Grass

D

spring

 

 

 

RC

winter

rhizomes

Glycyrrhiza sp.

Licorice

D

early spring

deep roots

 

 

S

spring, fall

 

G. glabra var. typica

European Licorice

SC

 

15 cm long rhizome cuttings with 2-3 buds

 

 

S

 

sow fresh

 

 

TC

 

 

Gnaphalium (Anaphalis) sp.

Cudweed

D

spring

as Helichrysum

 

 

S

spring

 

Goniolimon (Limonium) sp.

Statice

S

spring

usual method

 

 

RC

 

 

 

 

D

 

slow to spread

Gratiola officinalis

Hedge Hyssop

S

 

 

 

 

D

spring

poisonous

Grindelia sp.

Gum Plant

S

 

 

 

 

SC

late summer

shrubby sp.

Groenlandia densa

Frog's Lettuce

SC

spring, summer

scaly resting buds in spring

Gromania: see Sedum

 

 

 

 

Gunnera sp.

 

S

fall

sow fresh, difficult, slow

 

 

D

spring

lie flat on ground

 

 

SC

 

basa leafy buds

Gymnocarpium sp.

Oak Fern

D

 

 

 

 

S

 

spores

Gymnospermium sp.

 

S

 

 

Gymnothorix: see Pennisetum

 

 

 

 

Gynerium: see Cortaderia

 

 

 

 

Gypsophila sp.

Baby's Breath

S

 

doubles

 

 

SC

 

after flw, vegetative shoots best

 

 

TC

 

 

 

 

Graft

 

seldom used now

 

 

D

 

difficult

G. paniculata cultivars

 

SC

spring, early summer

side shoots, with heel

 

 

RC

early winter

 

G. repens

 

D

 

after flw


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