Allium

Allium 'Millenium'

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 'Mount Everest'

Germination Tips

J

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

Allium 'Purple Splendour'

Germination Tips

J

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

Allium 'Setlife'

Germination Tips

J

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

Allium 'Silver Spring'

Germination Tips

A

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

Allium 'Summer Beauty'

Germination Tips

G

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

Allium 'Summer Pink'

Germination Tips

J

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

Allium acuminatum

Germination Tips

J

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

Allium aflatunense

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 aflatunense 'Purple Sensation'

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. (from Pakistan Journal of Agricultural Sciences 2010 Vol. 47 No. 4 pp. 317-319)

Allium akaka

Germination Tips

A

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

Allium alataviense

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 altaicum

Germination Tips

A

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

Allium altissimum

Germination Tips

K

Sow @ 10°C. Most species for which we suggest this temperature will also germinate at 20°C, but prefer the cooler temperature for sturdy growth.

Allium amabile

Germination Tips

J

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

Allium amphibolum

Germination Tips

A

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

Allium angulosum

Germination Tips

J

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

Allium atropurpureum

Germination Tips

J

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

Allium azureum

Germination Tips

A

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

Allium backhausianum

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

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