ONTARIO ROCK GARDEN SOCIETY

Germination guide

Genus

Species

Germination

Remarks

Baccharis

magellanica

K

.

Baileya

multiradiata

A

Ballota

acetabulosa

A

Ballota

pseudodictamnus

A

Balsalm

alpinum

A

Banksia

ericifolia

J *

heat in oven at 125 deg C to open cone, then plunge in cold water immediately and soak for 1 day, dry and shake to remove seeds

Baptisia

alba

A 7

Baptisia

australis

A 2 7 *

subject to damping off, scarification leads to rotting

Baptisia

lactea

A 7

Baptisia

leucantha

G 7 *

subject to damping off

Baptisia

leucophaea

G 7 *

ditto

Baptisia

perfoliata

Baptisia

sp.

Baptisia

tinctoria

A 6 7

Begonia

sp.

A

Begonia

grandis

A

Begonia

grandis 'Alba'

A

Belamcanda

chinensis

A 3

outdoors in fall

Bellevalia

forniculata

J

Bellevalia

hyacinthoides

J *

subject to damping off

Berberis

thunbergii 'Aurea'

G N 8 *

plant 2 cm deep, wash clean 14d

Berberis

thunbergii 'Gold Ring'

G N 8 *

ditto

Berberis

vulgaris

K

Bergenia

cordifolia

A

Bergenia

cordifolia 'Purpurea'

A

Betula

pumila s. str v. depressa

Betula

sp.

J

Betula

apoiensis

Betula

glandulosa

G 4

Betula

middendorffii

J 3

Bidens

'Golden Eye'

A

Bidens

lutea

Biscutella

laevigata

Bletilla

striata

A *

sow in moist compost as soon as seed is ripe; include soil from an existing plant to provide symbiotic fungi

Boltonia

asteroides

A 3

Boltonia

asteroides v. latisquama

A 3

Borago

nana

Borago

officinalis

A N 1

Bouteloua

curtipendula

A

Bouteloua

gracilis

A

Boykinia

aconitifolia

A 3

Boykinia

grandiflora

Boykinia

jamesii

A

Boykinia

major

! L

Boykinia

occidentalis

B

Boykinia

rotundifolia

B

Brassica

all species

A

Brassica

jordanovii

Braya

alpina

A 3 7 *

soak in hot water

Brimeura

amethystina

H

Brimeura

amethystina 'Alba'

H

Brodiaea

elegans

! A

Brodiaea

pulchella

F

Browallia

sp.

A 3

Bruckenthalia

spiculifolia

A

Brugmansia

sp.

A

Brunnera

macrophylla

Bryonia

alba

G

Bryonia

dioica

G

Buddleja

davidii

A 3

Buddleja

davidii 'Black Knight'

A 3

Bulbine

frutescens

A

Bulbine

caulescens

A

Bulbine

semibarbata

A 2

Bulbocodium

vernum

! D *

grow @ 4 deg C until true leaf well established

Bunias

orientalis

A

Bupleurum

griffithii

J 3

Bupleurum

longifolium

! D

Bupleurum

ranunculoides

A 2

Bupleurum

rotundifolium

! A 2

Bupleurum

rotundifolium 'Green Gold'

! A 2

Bupleurum

sp.

Burchardia

umbellata

A