Handbook of Plant and Crop Physiology

GERMINATION AND EMERGENCE 75

Freeze or stratify

15–18

C 4 wk,

then 5

C 4 wk

Stratify 3–5

C 6 wk

Freeze or stratify

3–5°C 4–6 wk

8–10 21–28 5–10 30–40 7–10 7–10 10–14 30



10–20 15–20 10–14

D. caryophyllus

PinksCaryophyllaceae

Dicentra

Bleeding heartFumariaceae

Diascia barberae

TwinspurScrophulariaceae

Dictamnus albus

Gas plantRutaceae

Digitalis

FoxgloveScrophulariaceae

Dimorphotheca aurantiaca

Cape marigoldAsteraceae

Disporum

Faily bellsLiliaceae

Dodecatheon media

Shooting starPrimulaceae

Doronicum

spp.

Leopard’s baneAsteraceae

Dorotheanthus bellidiformis

(Mesembryanthemumcriniflorum)Livingston daisyAizoaceae

Droba aizoides

Whitlow grassCruciferae

P P A P B A P P P A P

21
10–12 21–25 12–15

21

16–18 15–20 15–22

21

18–22 20–22

10–13 10–12

10 16 10 10

10–12

D or L D or L

L L

D or L D or L

L D L

Self-sows easily. Fresh seed

may germinateimmediately. Older seedwill need to be stratified.

If fall-sown outdoor,

germination will occur overa 2-year period and may bemore productive than“artificial” stratification.

Reduce night temp. of

medium by 3

C for best

germination.

Seeds are short lived and

should not be stored.

Germination may be erratic.Reduce night temp. of

medium by 3°C for bestgermination.

Place in dark location but do

not cover because seed isfine.

continues