Allium

Allium senescens ssp. montanum

Germination Tips

G

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

Allium senescens ssp. senescens

Germination Tips

G

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

Allium senescens v. glaucum

Germination Tips

F

Sow @ 4°C.

Allium senescens x nutans

Germination Tips

A

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

Allium sewerzowii

Germination Tips

F

Sow @ 4°C.

Allium sikkimense

Germination Tips

A

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

Allium siskiyouense

Germination Tips

F

Sow @ 4°C.

Allium sp.

Germination Tips

*

This species needs special care as described.

J

Sow @4°C for 3 weeks, then place @20°C.
Special Care: 
seed viability < 1 year for all cold germinators except for A. cristophii

Allium sphaerocephalum

Germination Tips

G

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

Allium sphaerocephalum 'Hair'

Germination Tips

G

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

Allium splendens

Germination Tips

A

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

Allium stellatum

Germination Tips

A

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

Allium stellerianum

Germination Tips

A

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

Allium stipitatum

Germination Tips

*

This species needs special care as described.

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.

Allium stipitatum 'Mount Everest'

Germination Tips

J

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

Allium strictum

Germination Tips

J

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

Allium suworowii

Germination Tips

*

This species needs special care as described.

3

Requires light or the small seeds should be surface sown. See https://www.youtube.com/watch?v=RgkXUSI1GWo&index=1&list=UUJfYCNSWCIuOB2...

F

Sow @ 4°C.
Special Care: 
requires long cold period - more than 45 days

Allium sylvestris

Germination Tips

J

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

Allium szovitsii

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 tanguticum

Germination Tips

A

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