Handbook of Plant and Crop Physiology

88 CHONG ET AL.

TABLE 2

Continued

Medium temperature (

C)

Plant

Posttransplant

Days to

Light or

Species

type

Germination

(night)

germinate

dark

Pretreatment

Remarks

None if fresh.

Stratify storedseed 22

C 2–4 wk,

then 0–2

C 6 wk

Stratify 5

C 2–4 wk

Stratify 0–3

C 6

3 mo–2 yr

10 14

14–21 10–12 10–14 10–14

10

Sanguinaria canadensis

BloodrootPapaveraceae

Sanvitalia procumbens

Creeping zinniaAsteraceae

Saponaria ocymoides

SoapwortCaryophyllaceae

Saxifraga

spp.

SaxifrageSaxifragaceae

Scabiosa

spp.

Pincushion flowerDipsacaceae

Sedum

spp.

StonecropCrossulaceae

Sempervivum tectorum

Hens and chickensCrassulaceae

Senecio cineraria

Dusty millerAsteraceae

P A P P P P P

HHP

22–25

21

15–20

15 21

15–25

21

21–24

10–14 16–18 8–12

15 13 10

10–13 16–18

D L D

D or L D or L

L L L

Fresh seed recommended.

Stored seed requiresprolonged time forgermination. Cover lightlyif sown outdoors.

Difficult to transplant. Best

sown directly to garden orcontainer. Reduce nighttemp. of medium by 3

C

for best germination. Growon the dry side aftergermination.

Reduce night temp of medium

by 3

C for best

germination. Germinationmay be slow and erratic.

Normally propagated

vegetatively.

Predrench medium with

fungicide to preventdamping off.