Handbook of Plant and Crop Physiology

72 CHONG ET AL.

TABLE 2

Continued

Medium temperature (

C)

Plant

Posttransplant

Days to

Light or

Species

type

Germination

(night)

germinate

dark

Pretreatment

Remarks

If not sown fresh,

stratify 5

C 6 wk

Stratify 5

C 4–6 wk

Sow, then stratify

5 

C 6 wk

Stratify 15–20

C 2–3

wk, then 5

C 4–6

wk

5–105–105–10 10–20 7–12 8–18 10–21 10–1410–14^30 7–10 5–10 7–14

Centaurea cinerarea

Dusty miller

C. cyanusC. montana

Bachelor buttonAsteraceae

Centranthus ruber

Red valerianValerianaceae

Cephalaria gigantea

CephalariaDipsacaceae

Cerastium tomentosum

Snow-in-summerCaryophyllaceae

Ceratostigma plumbaginoides

PlumbagoPlumbaginaceae

Chelone glabraC. lyonii

TurtleheadScrophulariaceae

Chiastophyllum oppositifolium

CotyledonCrassulaceae

Chieranthus chieri

WallflowerBrassicaceae

Chrysanthemum parthenium

Feverfew

C. coccineum

Painted daisy

HHP

AP P P P P P P P B A P

18–2118–2118–21

15

21–22

15

10–20

1515 13 21

18–21 15–18

10–1310–1310–13

15

10–14

18 10

10–13

10

D DD

D or L D or L

L

D or L

L L

Use fresh seed for best results. Seeds are tiny. Do not cover

with medium.

Can be directly sown to

garden in summer.

Reduce night temp. of

medium by 3°C for bestgermination.