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ONTARIO ROCK GARDEN SOCIETY |
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Germination guide |
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Genus |
Species |
Germination |
Remarks |
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Campsis |
radicans |
A 3 |
. |
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Canna |
sp. |
A 6 7 |
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Cardiocrinum |
cordatum v. glehnii |
H |
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Cardiocrinum |
giganteum |
! H |
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Cardiospermum |
halicacabum |
A 3 |
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Carduncellus |
pinnatus |
. |
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Carduus |
defloratus |
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Carex |
'Frosted Curls' |
*A 3 |
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Carex |
all species |
J - North America and European |
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Carex |
buchananii |
B |
. |
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Carex |
comans |
A 3 * |
raise temperature of seedlings very slowly by growing under layer of snow |
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Carex |
glauca |
. |
. |
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Carex |
grayi |
A 3 |
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Carex |
muskingumensis |
A 3 |
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Carex |
nigra |
E |
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Carex |
scaposa |
. |
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Carex |
stellata |
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Carlina |
acanthifolia |
B |
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Carlina |
acaulis |
A 3 |
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Carlina |
acaulis ssp. acaulis |
A 3 |
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Carlina |
acaulis ssp. simplex |
A 3 |
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Carlina |
caulescens |
. |
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Carlina |
corymbosa |
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Carlina |
vulgaris |
D |
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Caryopteris |
sp. |
L |
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Caryopteris |
x clandonensis |
L |
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Cassia |
covesii |
A 6 7 |
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Cassia |
hebecarpa |
J 6 7 |
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Cassia |
sp. |
6 7 |
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Castilleja |
miniata |
C * |
must be sown with host grass - requires this by the time it has 5 true leaves |
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Catananche |
caerulea |
A |
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Catananche |
caespitosa |
A |
|
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Caulophyllum |
thalictroides |
! L 8 * |
unable to germinate stored seed, |
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Ceanothus |
'Owlswood Blue' |
L 7 |
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Ceanothus |
americanus |
L 7 * |
remove stiff husk |
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Ceanothus |
sp. |
L 7 |
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Celastrus |
sp. |
* |
perhaps wash with detergent, 20 C |
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Celmisia |
traversii |
! F |
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Celosia |
'Flamingo Feather' |
A |
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Centaurea |
'Black Ball' |
A |
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Centaurea |
aff. pindicola |
A |
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Centaurea |
americana |
A 2 |
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Centaurea |
bella |
A |
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Centaurea |
drabifolia ssp. cappadocica |
A |
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Centaurea |
drabifolia ssp. drabifolia |
A |
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Centaurea |
macrocephala |
A |
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Centaurea |
montana |
A |
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Centaurea |
nigra |
A |
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Centaurea |
orientalis |
A |
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Centaurea |
phrygia |
A |
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Centaurea |
pulcherrima |
A |
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Centaurea |
rothrockii |
A 2 |
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Centaurea |
rupestris |
A |
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Centaurea |
simplicicaulis |
A |
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Centaurea |
uniflora |
A |
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Centaurea |
uniflora ssp. nervosa |
A |
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Centaurium |
confertum |
J |
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Centaurium |
scilloides |
A 3 |
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Centranthus |
ruber |
A |
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Cephalanthera |
damassonicum |
. |
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Cephalanthus |
occidentalis |
A 3 |
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Cephalaria |
tatarica |
B |
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Cephalaria |
alpina |
F |
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Cephalaria |
alpina 'Nana' |
F |
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Cephalaria |
gigantea |
B |
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Cerastium |
all species |
A |
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Cerastium |
alpinum |
A |
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Cerastium |
alpinum v. lanatum |
A |
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Cerastium |
sp. |
A 2 |
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Cerastium |
tomentosum |
A 3 |
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Ceratostigma |
plumbaginoides |
A |
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Cercidiphyllum |
japonicum |
G |
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