Germination Guide

Click on a species name below to see it's germination tips.
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Actaea simplex v. simplex (Atropurpurea Group)

!

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.

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.
Actaea alba

!

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.

8

Pulpy coat inhibits germination. Remove by soaking and rinsing in clean water daily for approximately 7 days. Discard water.

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.
seedlings must be grown at less than 20° and can overwinter at -20°, prick out while small, seed is viable for at least 6m
Actaea alba f. rubrocarpa

!

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.

8

Pulpy coat inhibits germination. Remove by soaking and rinsing in clean water daily for approximately 7 days. Discard water.

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.
seedlings must be grown at less than 20° and can overwinter at -20°, prick out while small, seed is viable for at least 6m
Actaea americana

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.
Actaea asiatica

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

sow in autumn
Actaea cimicifuga

!

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.

C

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

8

Pulpy coat inhibits germination. Remove by soaking and rinsing in clean water daily for approximately 7 days. Discard water.

D

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

*

This species needs special care as described.

8

Pulpy coat inhibits germination. Remove by soaking and rinsing in clean water daily for approximately 7 days. Discard water.

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.
seedlings must be grown at less than 20° and can overwinter at -20°, prick out while small, seed is viable for at least 6m
Actaea europaea

!

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.

C

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

!

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.

C

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

C

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

!

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.

8

Pulpy coat inhibits germination. Remove by soaking and rinsing in clean water daily for approximately 7 days. Discard water.

H

Use repeated cycles of 4°C, then 20°C for 3 months each. Germination is very prolonged.
seedlings must be grown at less than 20° and can overwinter at -20°, prick out while small, seed is viable for at least 6m
Actaea pachypoda 'Misty Blue'

*

This species needs special care as described.

8

Pulpy coat inhibits germination. Remove by soaking and rinsing in clean water daily for approximately 7 days. Discard water.

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.
seedlings must be grown at less than 20° and can overwinter at -20°, prick out while small, seed is viable for at least 6m
Actaea pachypoda rubriflora

!

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.

8

Pulpy coat inhibits germination. Remove by soaking and rinsing in clean water daily for approximately 7 days. Discard water.

*

This species needs special care as described.
seedlings must be grown at cool temperature, best achieved by sowing in open ground
Actaea podocarpa

*

This species needs special care as described.

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

seedlings must be grown at less than 20° and can overwinter at -20°, prick out while small, seed is viable for at least 6m
Actaea racemosa

!

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.

C

Sow @ 20°C for 3 months, then place @ 4°C for 3 months.
2 years to germinate
Actaea ramosa

B

Sow @ 20°C. If seed does not germinate within 3 months, try 4°C for 1-2 months, then 20°C again.
Actaea ramosa atropurpurea

B

Sow @ 20°C. If seed does not germinate within 3 months, try 4°C for 1-2 months, then 20°C again.
Actaea ramosa v. atropurpurea

B

Sow @ 20°C. If seed does not germinate within 3 months, try 4°C for 1-2 months, then 20°C again.
Actaea rubra

!

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.

8

Pulpy coat inhibits germination. Remove by soaking and rinsing in clean water daily for approximately 7 days. Discard water.

H

Use repeated cycles of 4°C, then 20°C for 3 months each. Germination is very prolonged.
seedlings must be grown at less than 20° and can overwinter at -20°, prick out while small, seed is viable for at least 6m
Actaea rubra f. neglecta

!

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.

8

Pulpy coat inhibits germination. Remove by soaking and rinsing in clean water daily for approximately 7 days. Discard water.

H

Use repeated cycles of 4°C, then 20°C for 3 months each. Germination is very prolonged.
seedlings must be grown at less than 20° and can overwinter at -20°, prick out while small, seed is viable for at least 6m
Actaea simplex

!

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.

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.
Actaea simplex 'atropurpurea'

C

Sow @ 20°C for 3 months, then place @ 4°C for 3 months.
Actaea simplex 'Black Negligee'

!

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.

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.
Actaea simplex 'Brunette'

B

Sow @ 20°C. If seed does not germinate within 3 months, try 4°C for 1-2 months, then 20°C again.
Actaea simplex 'Hillside Black Beauty'

C

Sow @ 20°C for 3 months, then place @ 4°C for 3 months.
Actaea simplex ex 'Hillside Black Beauty' (Atropurpurea Group)

!

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.

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.
Actaea simplex v. simplex

C

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

!

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.

*

This species needs special care as described.
difficult to germinate; seedlings must be grown at cool temperature, best achieved by sowing in open ground
Actaea spicata

!

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.

8

Pulpy coat inhibits germination. Remove by soaking and rinsing in clean water daily for approximately 7 days. Discard water.

C

Sow @ 20°C for 3 months, then place @ 4°C for 3 months.
seedlings must be grown at less than 20° and can overwinter at -20°, prick out while small, seed is viable for at least 6m
Actaea spicata v. alba

!

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.

8

Pulpy coat inhibits germination. Remove by soaking and rinsing in clean water daily for approximately 7 days. Discard water.

C

Sow @ 20°C for 3 months, then place @ 4°C for 3 months.
seedlings must be grown at less than 20° and can overwinter at -20°, prick out while small, seed is viable for at least 6m
Actinea herbacea

A

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

G

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

*

This species needs special care as described.
subject to damping off
Adelocaryum anchusoides

A

Sow @ 20°C. Seed germinates within 3 months.
Adenophora stricta ssp. confusa

F

Sow @ 4°C.
Adenophora triphylla var. japonica

F

Sow @ 4°C.
Adenophora verticillata v. triphylla

F

Sow @ 4°C.
Adenophora bulleyana

A

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

F

Sow @ 4°C.
Adenophora himalayana

F

Sow @ 4°C.
Adenophora kurilensis

3

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

A

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

A

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

3

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

F

Sow @ 4°C.
Adenophora remotiflora

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.

3

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

*

This species needs special care as described.
transplant to garden when very small
Adenophora sp.

F

Sow @ 4°C.
Adenophora tashiroi

J

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

F

Sow @ 4°C.
Adenophora triphylla var. japonica

F

Sow @ 4°C.
Adenophora verticillata

F

Sow @ 4°C.
Adenostyles leucophylla

A

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

A

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

*

This species needs special care as described.
pour boiling water over milled sphagnum moss, sow seeds, enclose in plastic bag
Adlumia fungosa

3

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

A

Sow @ 20°C. Seed germinates within 3 months.
Biennial. Slow germinator - may take 2-3 months
Adonis apennina

!

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.

A

Sow @ 20°C. Seed germinates within 3 months.
much chaff and nonviable seed is typical; short viability; very poor germination; does not need chilling if seed is fresh
Adonis ramosa

!

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.

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

much chaff and nonviable seed is typical; short viability; very poor germination; does not need chilling if seed is fresh
Adonis 'Fukujukai'

!

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.

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

much chaff and nonviable seed is typical; short viability; very poor germination; does not need chilling if seed is fresh
Adonis aestivalis

*

This species needs special care as described.

A

Sow @ 20°C. Seed germinates within 3 months.
much chaff and nonviable seed is typical; short viability; very poor germination; does not need chilling if seed is fresh
Adonis amurensis

!

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.

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

much chaff and nonviable seed is typical; short viability; very poor germination; does not need chilling if seed is fresh
Adonis amurensis 'Genshu Fukujuso'

!

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.

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

much chaff and nonviable seed is typical; short viability; very poor germination; does not need chilling if seed is fresh
Adonis cyllenea

!

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.

A

Sow @ 20°C. Seed germinates within 3 months.
much chaff and nonviable seed is typical; short viability; very poor germination; does not need chilling if seed is fresh
Adonis pseudoamurensis

!

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.

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

much chaff and nonviable seed is typical; short viability; very poor germination; does not need chilling if seed is fresh