Handbook of Plant and Crop Physiology

GERMINATION AND EMERGENCE 67

Stratify 21

C 3 wk,

freeze 5 wk, thensow

7–10 12–18 7–21 8–10 14–21 10–3010–3021–28 14–21 14–2114–21

A. cana

Giant hyssopLabiaate

Ageratum houstonianum

Floss flowerAsteraceae

Alcea rosea

HollyhockMalvaceae

Alchemilla mollis

Lady’s mantleRosaceae

Amaranthus

spp.

Joseph’s coatAmaranthaceae

Anacyclus depressus

Rocky mountain daisyAsteraceae

Anagalis monelliA. linifoliaA. arvensis

PimpernelPrimulaceae

Anaphalis margaritaceae

Pearly everlastingAsteraceae

Anchusa capensisA. azurea

Bugloss, AlkanetBoraginaceae

A B P A P PAP-W P-W AA

21–24 18–21 10–15 21–24 15–20 

10



(^1021)
18–21 20–2520–25
12–16
10 10
15–18 10–15
16
10–13 15–1815–18
L D
D or L
DD
D or L
L DD
Lower germinating medium
night temp. by 3
C. After
transplanting, graduallyreduce night temp. to 10
C.
See note 6.Fresh seed germinates readily
at 21
C. Old or purchased
seed needs pretreatment.Self-sows easily.
Good seed at 80–85%
germination.
Fresh seed germinates best.Can be directly sown to
garden or container.
Reduce night temp. of
medium by 3
C for best
germination. Can bedirectly sown to gardenwhen soil has reached 20
C.
continues