Germination Guide

Click on a species name below to see it's germination tips.
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Allium flavum ssp. tauricum

J

Sow @4°C for 3 weeks, then place @20°C.
Allium flavum v. minus

J

Sow @4°C for 3 weeks, then place @20°C.
Allium flavum var. tauricum

J

Sow @4°C for 3 weeks, then place @20°C.
Allium forrestii

G

Sow @ 4°C for 3 months, then place @ 20°C for 3 months.
Allium geyeri

A

Sow @ 20°C. Seed germinates within 3 months.

2

Requires darkness.
Allium giganteum

G

Sow @ 4°C for 3 months, then place @ 20°C for 3 months.
Allium gooddingii

A

Sow @ 20°C. Seed germinates within 3 months.

2

Requires darkness.
Allium grayi

A

Sow @ 20°C. Seed germinates within 3 months.
Allium gultschense

J

Sow @4°C for 3 weeks, then place @20°C.
Allium gunibicum

L

Expose to fluctuating outdoor winter temperatures including freezing for 3 months. Gradually increase light and temperature in spring. See https://www.youtube.com/watch?v=SO_KKbGYTEM

Allium hirtifolium

6

Requires scarification. Nick or rub between sheets of sandpaper. See https://youtu.be/icB9HrqdQqU

G

Sow @ 4°C for 3 months, then place @ 20°C for 3 months.
scarify one year old seeds with sulfuric acid for 15 min, and stratify at 4°C. (from Pakistan Journal of Agricultural Sciences 2010 Vol. 47 No. 4 pp. 317-319)
Allium hollandicum

F

Sow @ 4°C.
Allium hollandicum 'Purple Sensation'

F

Sow @ 4°C.
Allium hyalinum

J

Sow @4°C for 3 weeks, then place @20°C.
Allium hybrid

?

We have incomplete information on the germination of this species. Sometimes we offer an educated guess about which approach you could try. Let us know what is successful.

L

Expose to fluctuating outdoor winter temperatures including freezing for 3 months. Gradually increase light and temperature in spring. See https://www.youtube.com/watch?v=SO_KKbGYTEM

Allium insubricum

J

Sow @4°C for 3 weeks, then place @20°C.
Allium jesdianum

E

Sow @ 20°C for 6 weeks, then place @ 4°C for 6 weeks, then slowly raise temperature to 10°C for 6 weeks. If there is no germination, repeat the cycle. This mimics fall sowing outdoors for spring germination.
Allium kansuense

A

Sow @ 20°C. Seed germinates within 3 months.
Allium karataviense

!

Sow immediately. The viability of these seeds is short or the species propagates best with fresh seed. Stored seed might be coaxed into germination with temperature cycling and patience.

H

Use repeated cycles of 4°C, then 20°C for 3 months each. Germination is very prolonged.
store seed @ 4°C; seed stored @ 20°C takes 6-9 months to germinate
Allium karataviense 'Ivory Queen'

!

Sow immediately. The viability of these seeds is short or the species propagates best with fresh seed. Stored seed might be coaxed into germination with temperature cycling and patience.

H

Use repeated cycles of 4°C, then 20°C for 3 months each. Germination is very prolonged.
store seed @ 4°C; seed stored @ 20°C takes 6-9 months to germinate
Allium kokanicum

A

Sow @ 20°C. Seed germinates within 3 months.
Allium komarovianum

A

Sow @ 20°C. Seed germinates within 3 months.
Allium komarowii

F

Sow @ 4°C.
Allium luteolum

J

Sow @4°C for 3 weeks, then place @20°C.
Allium luteum

A

Sow @ 20°C. Seed germinates within 3 months.
Allium mairei v. amabile

A

Sow @ 20°C. Seed germinates within 3 months.
Allium moly

H

Use repeated cycles of 4°C, then 20°C for 3 months each. Germination is very prolonged.

*

This species needs special care as described.
store seed @ 4°C; seed stored @ 20°C takes 6-9 months to germinate
Allium murrayanum

J

Sow @4°C for 3 weeks, then place @20°C.
Allium narcissiflorum

E

Sow @ 20°C for 6 weeks, then place @ 4°C for 6 weeks, then slowly raise temperature to 10°C for 6 weeks. If there is no germination, repeat the cycle. This mimics fall sowing outdoors for spring germination.
Allium neapolitanum

!

Sow immediately. The viability of these seeds is short or the species propagates best with fresh seed. Stored seed might be coaxed into germination with temperature cycling and patience.

*

This species needs special care as described.

J

Sow @4°C for 3 weeks, then place @20°C.
constant humidity
Allium neopolitanum

!

Sow immediately. The viability of these seeds is short or the species propagates best with fresh seed. Stored seed might be coaxed into germination with temperature cycling and patience.

J

Sow @4°C for 3 weeks, then place @20°C.
constant humidity
Allium nigrum

E

Sow @ 20°C for 6 weeks, then place @ 4°C for 6 weeks, then slowly raise temperature to 10°C for 6 weeks. If there is no germination, repeat the cycle. This mimics fall sowing outdoors for spring germination.
Allium nutans

A

Sow @ 20°C. Seed germinates within 3 months.
Allium nutans X senescens

A

Sow @ 20°C. Seed germinates within 3 months.
Allium obliquum

J

Sow @4°C for 3 weeks, then place @20°C.
Allium ochotense

A

Sow @ 20°C. Seed germinates within 3 months.
Allium ochroleucum

J

Sow @4°C for 3 weeks, then place @20°C.
Allium oreophilum

J

Sow @4°C for 3 weeks, then place @20°C.
Allium oschaninii

A

Sow @ 20°C. Seed germinates within 3 months.
Allium ostrowskianum

J

Sow @4°C for 3 weeks, then place @20°C.
Allium paniculatum

F

Sow @ 4°C.
Allium perdulce

J

Sow @4°C for 3 weeks, then place @20°C.
Allium prostratum

G

Sow @ 4°C for 3 months, then place @ 20°C for 3 months.
Allium pskemense

J

Sow @4°C for 3 weeks, then place @20°C.
Allium pulchellum

F

Sow @ 4°C.
Allium purpureum

J

Sow @4°C for 3 weeks, then place @20°C.
Allium ramosum

A

Sow @ 20°C. Seed germinates within 3 months.

*

This species needs special care as described.
constant humidity
Allium rosenbachianum

J

Sow @4°C for 3 weeks, then place @20°C.
Allium roseum

J

Sow @4°C for 3 weeks, then place @20°C.
30% germination
Allium rotundum ssp. jajlae

J

Sow @4°C for 3 weeks, then place @20°C.
Allium saxatile

J

Sow @4°C for 3 weeks, then place @20°C.
Allium schoenoprasum

A

Sow @ 20°C. Seed germinates within 3 months.
Allium schoenoprasum 'Bode Pastel'

A

Sow @ 20°C. Seed germinates within 3 months.
Allium schoenoprasum 'Curly Mauves'

A

Sow @ 20°C. Seed germinates within 3 months.
Allium schoenoprasum 'Forescate'

A

Sow @ 20°C. Seed germinates within 3 months.
Allium schoenoprasum f. album

A

Sow @ 20°C. Seed germinates within 3 months.
Allium schubertii

A

Sow @ 20°C. Seed germinates within 3 months.
Allium senescens

G

Sow @ 4°C for 3 months, then place @ 20°C for 3 months.
Allium senescens ssp. montanum

G

Sow @ 4°C for 3 months, then place @ 20°C for 3 months.
Allium senescens ssp. senescens

G

Sow @ 4°C for 3 months, then place @ 20°C for 3 months.