ONTARIO ROCK GARDEN & HARDY PLANT SOCIETY

Germination guide G1

Genus

Species

Germination

Remarks

Gagea

pauciflora

?

Gaillardia

aristata

A

Gaillardia

ex 'Goblin'

A

Gaillardia

ex 'Kobold'

A

Gaillardia

grandiflora

A

Gaillardia

pulchella ex 'Red Plume'

A

Gaillardia

sp.

A

Gaillardia

x grandiflora

A

Gaillardia

x grandiflora ex 'Goblin'

A

Galanthus

elwesii

! H *

grow seedlings at cool temperature - best achieved by sowing in open ground

Galanthus

ikariae

K N

Galanthus

woronowii

K N

Galax

urceolata

K

Galega

officinalis

A 3

grow on @ 10°C

Galega

orientalis

A

Galeopsis

speciosa

G 2

Galium

nigellastrum

?

Galium

odoratum

A

Galium

tricornutum

! *

outdoors in autumn

Galtonia

candicans

! A 2

Galtonia

viridiflora

B

Gaultheria

adenothrix

G 8 *

peat based medium, prone to damping off

Gaultheria

all species

3

Gaultheria

fragrantissima

G 8 *

peat based medium, prone to damping off

Gaultheria

procumbens

A 8

Gaultheria

shallon

A 3

Gaura

lindheimeri

A 2

Gaylussacia

baccata

C

Gazania

krebsiana

K 2 *

grow cool

Gazania

linearis

A

Gelasine

coerulea

?

Genista

albida

A 7 *

soak in hot water

Genista

dalmatica

A 7 *

soak in hot water

Genista

hispanica ssp. occidentalis

G 7

Genista

horrida

A 1 6 7 *

soak in hot water

Genista

michelii

A 7 *

soak in hot water

Genista

pilosa ex 'Vancouver Gold'

L 7

Genista

procumbens

A 7

Genista

sagittalis

A 1 6 7

Genista

sagittalis ssp. delphinensis

A 1 6 7

Genista

subcapitata

L 1 6 7

Genista

sylvestris

A 7 *

soak in hot water

Genista

sylvestris v. pungens

A 7 *

soak in hot water

Genista

tinctoria

A 1 6 7

Gentiana

acaulis

D or A 4

Gentiana

acaulis ex 'Rannoch'

D or A 4

Gentiana

affinis

L

Gentiana

affinis pneumonanthe

L

Gentiana

all species

E

Gentiana

andrewsii

E 3

Gentiana

angulosa

L 3

Gentiana

angustifolia

A

Gentiana

angustifolia ex 'Frei'

E

Gentiana

asclepiadea

A 3 *

daytime 25°C, night 5°C

Gentiana

asclepiadea alba

A 3 *

daytime 25°C, night 5°C

Gentiana

asclepiadea ex 'Alba'

A 3 *

daytime 25°C, night 5°C

Gentiana

asclepiadea ex 'Rosea'

A 3 *

daytime 25°C, night 5°C

Gentiana

asclepiadea v. alba

A 3 *

daytime 25°C, night 5°C

Gentiana

bavarica v. subacaulis

E

Gentiana

bigelovii

L

Gentiana

boissieri

G

Gentiana

burseri ssp. villarsii

L

Gentiana

cachemirica

A

Gentiana

calycosa

A

Gentiana

clausa

L

Gentiana

clusii

D 4 *

poor germination

Gentiana

clusii alba

D 4 *

poor germination

Gentiana

clusii rochelii

D 4 *

poor germination

Gentiana

clusii v. amethystina

D 4 *

poor germination

Gentiana

cruciata

! B 3 5

Gentiana

cruciata ssp. phlogifolia

! B 3 5

Gentiana

dahurica

L 4

hard to germinate

Gentiana

decumbens

A

Gentiana

dinarica

A 3 5

Gentiana

divisa

B

Gentiana

ex 'Blue Herald'

A

Gentiana

ex 'Frei'

D

Gentiana

ex 'Shusui Blue'

A 3

Gentiana

freyniana

J 2

Gentiana

gelida

L

Gentiana

gracilipes

! L 3

hard to germinate

Gentiana

gracilipes alba

! L 3

Gentiana

gracilis

L

Gentiana

grossheimii

A

Gentiana

hascombensis

L

Gentiana

kurroo

B

Gentiana

lagodechiana

A

Gentiana

linearis

L

hard to germinate

Gentiana

loderi

A

Gentiana

lutea

E

Gentiana

macrophylla

! J 2

Gentiana

occidentalis

G 4

Gentiana

olgae

A

Gentiana

pannonica

E 2

Gentiana

paradoxa

G

Gentiana

pneumonanthe

E *

best results with day and night temp of 25 °

Gentiana

puberulenta

G

Gentiana

punctata

! E 2 *

10°C x 5 days, 4°C x 5-6 weeks; very slow growing

Gentiana

purpurea

E 3

Gentiana

rhodantha

?

Gentiana

rigescens

G

Gentiana

rostanii

K *

outdoors in autumn

Gentiana

saponaria

! E 2

Gentiana

saxosa

E 4

Gentiana

scabra

! A 3

ephemeral

Gentiana

septemfida

A *

daytime 20°C, night 10°C

Gentiana

septemfida v. lagodechiana ex 'Hascombensis'

A *

daytime 20°C, night 10°C

Gentiana

sino-ornata

A

Gentiana

sino-ornata ex 'Zauberglocke'

A

Gentiana

sino-ornata hybrids

A

Gentiana

sp.

! L

Gentiana

squarrosa

?

Gentiana

stevenagensis

?

Gentiana

sylvestris

G

Gentiana

terglouensis ssp. schleicheii

L

Gentiana

tianschanica

A

Gentiana

tibetica

A

Gentiana

triflora

G

Gentiana

triflora v. japonica

G

Gentiana

uschiyamai

L

Gentiana

veitchiorum

G

Gentiana

verna

E 2 4

Gentiana

verna globulosa

E 2 4

Gentiana

verna ssp. balcanica

E 2 4

Gentiana

verna ssp. pontica

E 2 4

Gentiana

verna ssp. rostanica

E 2 4

Gentiana

verna ssp. tergestina

E 2 4

Gentiana

verna ssp. verna

E 2 4

Gentiana

verna v. angulosa

E 2 4

Gentiana

verna x pumila

E 2 4

Gentiana

wutaiensis

J

Gentiana

yakushimensis

A

Gentiana

yunnanensis cruciata

A

Gentianella

amarella

! N

Gentianella

detonsa ssp. nesophila

?

Gentianella

germanica

A 3 4

Gentianopsis

crinita

! K *

germinate and grow @ 10°,seed which doesn't germinate in 3-5w is probably not viable

Gentianopsis

procera

! L

Gentianopsis

sp.

try L


Ga - Gen - 10/09

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