Handbook of Plant and Crop Physiology

GERMINATION AND EMERGENCE 69

Soak in warm water

6–8 hr

If not sown fresh,

stratify 5

C 4 wk

If not sown fresh,

stratify 5°C 3 wk

Sow, then stratify

21

C 2 wk, then

5 

C 4 wk

Stratify 2–5

C 4 wk

Nick or file seed coat

15–20 14–21 25–30 14–21 21–28

15

21–2821–28 10–14

(^20) 7–10 5–10
Arenaria montana
SandwortCaryophyllaceae
Arneria spp.
ThriftPlumbaginaceae
Arnica
spp.
ArnicaAsteraceae
Aruncus dioicus
Goat’s beardRosaceae
Asclepias tuberosa
Butterfly weedAsclepidaceae
Aster
spp.
AsterAsteraceae
Astilbe chinensis ‘Pumila’A.
arendsii
False SpiraeaSaxifragceae
Astrantia major
MasterwortApiaceae
Aubrieta
sp.
Rock cressBrassicaceae
Aurinia saxitilis
Basket-of-goldBrassicaceae
Baptisia australis
Wild indigoFabaceae
P P P P
P-W
P P P P P P P
12–17 15–18
12
22–24 20–24
21
15–2115–21 10–20
18 15
21–24
10
10–15
10 10 10 10
L
D or L
D
D or L
L
Germination is sometimes
low or erratic
Fresh seed can be sown
immediately.
Germination is erratic. Fresh
seed gives best results ifsown immediately.
When seeds turn black,
collect and sow.
continues