ONTARIO ROCK GARDEN SOCIETY

Germination guide O1

Genus

Species

Germination

Remarks

Oenothera

'Sunset'

Oenothera

Colin Porter'

Oenothera

acaulis

A

Oenothera

biennis

A 3

Oenothera

caespitosa

A

Oenothera

campylocalyx

.

Oenothera

drummondii

A

Oenothera

flava

A

Oenothera

fruticosa ssp. glauca

A

Oenothera

kunthiana

A

Oenothera

macrocarpa

B

Oenothera

rosea

A

Oenothera

sommemweiyae

A

Oenothera

sp.

L

Oenothera

sp. 'Eileen Doner'

.

Oenothera

speciosa

A 2

Oenothera

triloba

A

Oenothera

versicolor

A

Olsynium

douglasii

L

Omphalodes

linifolia

A 2

Omphalodes

linifolia 'Venus Navel'

A 2

Omphalodes

luciliae

A 2

Omphalodes

luciliae 'Alba'

A 2

Onobrychis

montana

.

Onobrychis

sp.

L

Onobrychis

viciifolia

K N 7

Onoclea

sensibilis

A *

pour boiling water over milled sphagnum moss, sow seeds, enclose in plastic bag

Ononis

rotundifolia

A 2 6

.

Ononis

spinosa

A 1 6 7

Onopordum

acanthium

A 3

Onopordum

nervosum

L

Onosma

stellulata

E

Onosma

acaulis

.

Onosma

bourgaei

Onosma

sp.

E

Onosma

taurica

G

Ophiopogon

planiscapus 'Arabicus'

A

Ophiopogon

planiscapus 'Ebony Knight'

A

Ophiopogon

planiscapus 'Nigrescens'

A

Oplopanax

horridus

.

Opuntia

compressa

5

wash seeds from fruit

Opuntia

humifusa

A 5

ditto

Opuntia

polyacantha

A 5

ditto

Opuntia

sp.

A 7

ditto

Origanum

creticum

A

Origanum

vulgare ssp. hirtum

A

Orlaya

grandiflora

A

Orostachys

boehmeri

.

Orostachys

spinosa

A

Orostachys

spinosa 'Minutum'

A

Orthocarpus

cuspidatus

.

Osmorhiza

longistylis

L

Osmunda

regalis

A *

spores lose viability in 3 days, pour boiling water over milled sphagnum moss, sow seeds, enclose in plastic bag

Osteospermum

pluvialis 'Glistening White'

A

Ourisia

macrophylla

A 3

Oxalis

valdiviensis

*

germinate @ 25 deg C

Oxytropis

campestris

A

despite its small size, seed must be scarified

 

Oxytropis

campestris

A

despite its small size, seed must be scarified

Oxytropis

fomonii

A 1 6 7

ditto

Oxytropis

halleri

L 1 6 7 *

despite its small size, seed must be scarified, sow in deep pot, protect from damping off

Oxytropis

jacquinii

6 7

despite its small size, seed must be scarified

Oxytropis

johannensis

A 1 6 7

ditto

Oxytropis

lambertii

A 6 7

ditto

Oxytropis

megalantha

L 6 7

ditto

Oxytropis

rupestris

ditto

Oxytropis

sericea

A 6 7

ditto

Oxytropis

sericea v. spicata

A 6 7

ditto

Oxytropis

splendens

A 6 7

ditto