Handbook of Plant and Crop Physiology

GERMINATION AND EMERGENCE 77

Stratify 5

C 4 wk

Chill 7 days, then

soak 4 hr in water

Sow, then freeze 3

wk

Ripen fresh seeds

22–24°C 2–4 wk

7–10^14

2–3 wk

8–128–1212–18 8–128–12 14–21 10–14 14–28 7–28 7–14

Erysimum

spp.

Alpine erysimumBrassicaceae

Eschscholzia californica

California poppyPapaveraceae

Eupatorium

spp.

BonesetAsteraceae

Euphorbia epithymoidesE. marginataE. myrsinites

SpurgeEuphorbiaceae

Filipendula

spp.

MeadowsweetRosaceae

Gaillardia pulchellaG. aristata

Blanket flowerAsteraceae

Gaura lindheimeri

GauraOnagraceae

Gazania

spp.

GazaniaAsteraceae

Gentiana acaulis

GentianGentianaceae

Geranium

spp.

CranesbillGeraniaceae

Gerbera jamesonii

Transvaal daisyAsteraceae

B A P P AP P AP-W P A P P A

13–18 16–18 20–24 21–2421–24Day 27Night 2718–23 20–2420–24 18–23 15–17 20–25 20–22 20–22

10

10–12

15

18–2118–21

10

12–15

1010

13–16

10

10–12 16–18

D

D or L D or LD or L

L L L D D

Plants self-sow easily.

Difficult to transplant. Bestsown directly to garden orcontainer.

Reduce night temp. of

medium by 3

C for best

germination.

Difficult to transplant because

of a long tap root.

Likes cool growing condition.Seeds are short lived and

should not be stored.

Use fresh seed. Stored seed

loses viability.

continues