Germination Guide

Click on a species name below to see it's germination tips.
Search for a genus or species by entering specific words or parts of words.
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Achnatherum extremiorientale

A

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

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.
Acidanthera sp.

?

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.

A

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

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...
Acis autumnalis

A

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

A

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

!

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.
seed very poisonous, wash hands after handling, 20°C x 4 weeks, then -7°C x 6 weeks, then 10°C,
Aconitum barbatum

!

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.
seed very poisonous, wash hands after handling, 20°C x 4 weeks, then -7°C x 6 weeks, then 10°C,
Aconitum columbianum

!

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.
seed very poisonous, wash hands after handling, 20°C x 4 weeks, then -7°C x 6 weeks, then 10°C
Aconitum kirinense

!

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

seed very poisonous, wash hands after handling
Aconitum moldavicum

!

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

seed very poisonous, wash hands after handling
Aconitum 'Ivorine'

!

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.
20°C x 4 weeks, then -7°C x 6 weeks, then 10°C, seed very poisonous, wash hands after handling
Aconitum 'Bressingham Spire'

!

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.
seed very poisonous, wash hands after handling, 20°C x 4 weeks, then -7°C x 6 weeks, then 10°C
Aconitum 'Stainless Steel'

!

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.
seed very poisonous, wash hands after handling, 20°C x 4 weeks, then -7°C x 6 weeks, then 10°C
Aconitum acutiflorum

!

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.

*

This species needs special care as described.
seed very poisonous, wash hands after handling; short viability
Aconitum alboviolaceum

!

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.

G

Sow @ 4°C for 3 months, then place @ 20°C for 3 months.
seed is short lived if not moisture packed
Aconitum altaicum

!

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.

3

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

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.
seed very poisonous, wash hands after handling
Aconitum anthora

!

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.
20°C x 4 weeks, then -7°C x 6 weeks, then 10°C, seed very poisonous, wash hands after handling
Aconitum baicalense

!

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.
20°C x 4 weeks, then -7°C x 6 weeks, then 10°C, seed very poisonous, wash hands after handling
Aconitum bakeri

!

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.
20°C x 4 weeks, then -7°C x 6 weeks, then 10°C, seed very poisonous, wash hands after handling
Aconitum carmichaelii

!

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.
seed very poisonous, wash hands after handling; longer viability than other aconitum seed, 20°C x 4 weeks, -7°C x 6 weeks, 10°C for germination
Aconitum carmichaelii 'Arendsii' (Arendsii 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.

*

This species needs special care as described.

J

Sow @4°C for 3 weeks, then place @20°C.
seed very poisonous, wash hands after handling; longer viability than other aconitum seed, 20°C x 4 weeks, -7°C x 6 weeks, 10°C for germination
Aconitum czekanovskyi

!

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.
20°C x 4 weeks, then -7°C x 6 weeks, then 10°C, seed very poisonous, wash hands after handling
Aconitum excelsum

!

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.
20°C x 4 weeks, then -7°C x 6 weeks, then 10°C, seed very poisonous, wash hands after handling
Aconitum ferox

!

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.

D

Use repeated cycles of 20°C, then 4°C for 3 months each. Germination is very prolonged.
seed very poisonous, wash hands after handling
Aconitum fischeri

!

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.
20°C x 4 weeks, then -7°C x 6 weeks, then 10°C, seed very poisonous, wash hands after handling
Aconitum gmelinii

!

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.
20°C x 4 weeks, then -7°C x 6 weeks, then 10°C, seed very poisonous, wash hands after handling
Aconitum grignae

!

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.
20°C x 4 weeks, then -7°C x 6 weeks, then 10°C, seed very poisonous, wash hands after handling
Aconitum hemsleyanum

!

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

seed very poisonous, wash hands after handling
Aconitum heterophyllum

!

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.

2

Requires darkness.

4

Germination is improved by using GA3.

J

Sow @4°C for 3 weeks, then place @20°C.
presoak in 45°C water for 90 sec; conflicting germination data; seed very poisonous, wash hands after handling
Aconitum japonicum

!

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.
seed very poisonous, wash hands after handling
Aconitum kitadakense

!

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.
20°C x 4 weeks, then -7°C x 6 weeks, then 10°C, seed very poisonous, wash hands after handling
Aconitum krylovii

!

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.
20°C x 4 weeks, then -7°C x 6 weeks, then 10°C, seed very poisonous, wash hands after handling
Aconitum kusnezoffii

!

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.

*

This species needs special care as described.
seed very poisonous, wash hands after handling
Aconitum lamarckii

!

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.
seed very poisonous, wash hands after handling, 20°C x 4 weeks, then -7°C x 6 weeks, then 10°C
Aconitum lycoctonum

!

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.
20°C x 4 weeks, then -7°C x 6 weeks, then 10°C, seed very poisonous, wash hands after handling
Aconitum lycoctonum ssp. lycoctonum

!

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.
20°C x 4 weeks, then -7°C x 6 weeks, then 10°C, seed very poisonous, wash hands after handling
Aconitum lycoctonum ssp. 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.
20°C x 4 weeks, then -7°C x 6 weeks, then 10°C, seed very poisonous, wash hands after handling
Aconitum lycoctonum ssp. vulparia

!

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.
20°C x 4 weeks, then -7°C x 6 weeks, then 10°C, seed very poisonous, wash hands after handling
Aconitum napellus

!

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.
20°C x 4 weeks, then -7°C x 6 weeks, then 10°C, seed very poisonous, wash hands after handling
Aconitum sachalinense

!

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.
20°C x 4 weeks, then -7°C x 6 weeks, then 10°C, seed very poisonous, wash hands after handling
Aconitum sachalinense ssp. yezoense

!

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.
20°C x 4 weeks, then -7°C x 6 weeks, then 10°C, seed very poisonous, wash hands after handling
Aconitum septentrionale

!

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.
20°C x 4 weeks, then -7°C x 6 weeks, then 10°C, seed very poisonous, wash hands after handling
Aconitum sinomontanum

!

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.

H

Use repeated cycles of 4°C, then 20°C for 3 months each. Germination is very prolonged.
seed very poisonous, wash hands after handling
Aconitum 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.

*

This species needs special care as described.
20°C x 4 weeks, then -7°C x 6 weeks, then 10°C, seed very poisonous, wash hands after handling
Aconitum trilobum

!

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.
20°C x 4 weeks, then -7°C x 6 weeks, then 10°C, seed very poisonous, wash hands after handling
Aconitum uncinatum

!

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.
seed germination is usually unsuccessful; seed very poisonous; wash hands after handling; short viability; 20°C x 4 weeks, -7°C x 6 weeks, 10°C for germination
Aconitum violaceum

!

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.

G

Sow @ 4°C for 3 months, then place @ 20°C for 3 months.
viability extended if moist packed when collected
Aconitum violaceum

!

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.

G

Sow @ 4°C for 3 months, then place @ 20°C for 3 months.
seed viability is short unless moist packed
Aconitum volubile

!

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.
seed germination is usually unsuccessful; seed very poisonous; wash hands after handling; short viability; 20°C x 4 weeks, -7°C x 6 weeks, 10°C for germination
Aconitum vulparia

!

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.
20°C x 4 weeks, then -7°C x 6 weeks, then 10°C, seed very poisonous, wash hands after handling
Aconitum x cammarum 'Pink Sensation'

!

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.
seed very poisonous, wash hands after handling, 20°C x 4 weeks, then -7°C x 6 weeks, then 10°C
Aconitum x cammarum 'Stainless Steel'

!

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.
20°C x 4 weeks, then -7°C x 6 weeks, then 10°C, seed very poisonous, wash hands after handling
Aconitum × cammarum 'Bicolor'
Acorus calamus

*

This species needs special care as described.
20°C x 4 weeks, then -7°C x 6 weeks, then 10°C, seed very poisonous, wash hands after handling
Actaea dahurica

*

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.

D

Use repeated cycles of 20°C, then 4°C for 3 months each. Germination is very prolonged.
scarify with concentrated sulphuric acid for at least 3 hours CAUTION:THIS CAN BE A DANGEROUS PROCEDURE
Actaea pachypoda 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.

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 ex 'Black Negligee' (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 (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