Allium

Allium flavum 'Minor'

Germination Tips

J

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

Allium flavum ssp. tauricum

Germination Tips

J

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

Allium flavum v. minus

Germination Tips

J

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

Allium flavum var. tauricum

Germination Tips

J

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

Allium forrestii

Germination Tips

G

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

Allium geyeri

Germination Tips

A

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

2

Requires darkness.

Allium giganteum

Germination Tips

G

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

Allium gooddingii

Germination Tips

A

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

2

Requires darkness.

Allium grayi

Germination Tips

A

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

Allium gultschense

Germination Tips

J

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

Allium gunibicum

Germination Tips

L

Give sown seeds several weeks @ 20°C to imbibe water (perhaps even germinate!), then 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

Germination Tips

6

Requires scarification. Nick or rub between sheets of sandpaper.  See https://youtu.be/icB9HrqdQqU  Seed coat of Baptisia and Oxytropis and other Fabaceae can be scarified by soaking in boiling water. See http://botanicallyinclined.org/continuing-the-sowing-in-hot-water

G

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

Germination Tips

F

Sow @ 4°C.

Allium hollandicum 'Purple Sensation'

Germination Tips

F

Sow @ 4°C.

Allium hyalinum

Germination Tips

J

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

Allium hybrid

Germination Tips

?

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

Give sown seeds several weeks @ 20°C to imbibe water (perhaps even germinate!), then 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

Germination Tips

J

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

Allium jesdianum

Germination Tips

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

Germination Tips

A

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

Allium karataviense

Germination Tips

!

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.
Special Care: 
store seed @ 4°C; seed stored @ 20°C takes 6-9 months to germinate
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