Germination Guide

Click on a species name below to see it's germination tips.
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Clematis fusca

*

This species needs special care as described.

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

A

Sow @ 20°C. Seed germinates within 3 months.
see www.bcollingwood.com
Clematis fusca v. violacea

*

This species needs special care as described.

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

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

see hhttp://www.bcollingwood.com/index1.htm
Clematis glauca

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

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

*

This species needs special care as described.
see www.bcollingwood.com
Clematis heracleifolia

A

Sow @ 20°C. Seed germinates within 3 months.
Clematis heracleifolia 'Cassandra'

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

A

Sow @ 20°C. Seed germinates within 3 months.
Clematis heracleifolia 'China Purple'

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

G

Sow @ 4°C for 3 months, then place @ 20°C for 3 months.
Clematis heracleifolia 'Clarissa'

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

G

Sow @ 4°C for 3 months, then place @ 20°C for 3 months.
Clematis heracleifolia 'New Love'

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

G

Sow @ 4°C for 3 months, then place @ 20°C for 3 months.
Clematis heracleifolia 'Wyevale'

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

G

Sow @ 4°C for 3 months, then place @ 20°C for 3 months.
Clematis heracleifolia v. davidiana

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

G

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

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

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

*

This species needs special care as described.
see www.bcollingwood.com
Clematis hirsutissima

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

Clematis ianthina

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

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

*

This species needs special care as described.
see www.bcollingwood.com
Clematis integrifolia

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

A

Sow @ 20°C. Seed germinates within 3 months.
Clematis integrifolia 'Baby White'

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

A

Sow @ 20°C. Seed germinates within 3 months.
Clematis integrifolia 'Fascination'

A

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

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.
Clematis integrifolia 'Gazelle'

A

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

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.
Clematis integrifolia 'Hendersonii'

A

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

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.
Clematis integrifolia 'Lake Baikal'

*

This species needs special care as described.

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

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

see http://www.bcollingwood.com/index1.htm
Clematis integrifolia 'Mongolian Bells'

*

This species needs special care as described.

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

A

Sow @ 20°C. Seed germinates within 3 months.
see http://www.bcollingwood.com/index1.htm
Clematis integrifolia 'Pangbourne Pink'

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

A

Sow @ 20°C. Seed germinates within 3 months.
Clematis integrifolia 'Purpurea'

A

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

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.
Clematis integrifolia 'Rosea'

A

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

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.
Clematis integrifolia 'Swedish Bells'

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

A

Sow @ 20°C. Seed germinates within 3 months.
Clematis integrifolia ex 'Alba'

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

A

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

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

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

*

This species needs special care as described.
see www.bcollingwood.com
Clematis ispahanica

*

This species needs special care as described.

4

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

A

Sow @ 20°C. Seed germinates within 3 months.
hard to germinate
Clematis japonica

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

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

*

This species needs special care as described.
see www.bcollingwood.com
Clematis koreana

J

Sow @4°C for 3 weeks, then place @20°C.
Clematis koreana 'Blue Eclipse'

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

J

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

A

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

2

Requires darkness.
Clematis lasiandra

A

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

G

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

*

This species needs special care as described.
germination enhanced by smoke
Clematis ligusticifolia

H

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

7

Requires soaking. Place in warm water until seeds swell, usually 24-48 hours. Discard floaters and the water used for soaking. See https://youtu.be/dhL57pqnHHQ

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.
Clematis macropetala

A

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

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.
Clematis macropetala 'Alba'

A

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

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.
Clematis macropetala 'Jan Lindmark'

A

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

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.
Clematis macropetala 'Lagoon'

A

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

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.
Clematis macropetala 'Maidwell Hall'

A

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

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.
Clematis macropetala 'Markham's Pink'

A

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

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.
Clematis macrostachys 'Blue Moon'

*

This species needs special care as described.

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

A

Sow @ 20°C. Seed germinates within 3 months.
see http://www.britishclematis.org.uk/seed.htm
Clematis mandshurica

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

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.
Clematis montana

A

Sow @ 20°C. Seed germinates within 3 months.
Clematis montana var. montana

A

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

F

Sow @ 4°C.

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.
Clematis occidentalis

D

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

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.
Clematis occidentalis 'Big Horns'

C

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

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.
Clematis ochotensis

J

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

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.
Clematis ochotensis x alpina

J

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

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.
Clematis ochroleuca

J

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

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...

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.
Clematis orientalis 'Annemieke'

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

B

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

C

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

4

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

A

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

J

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

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.
Clematis potaninii v. fargesii

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.

J

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

!

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.

A

Sow @ 20°C. Seed germinates within 3 months.
germination unlikely after dry storage > 6 months
Clematis recta 'Purpurea'

!

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.

A

Sow @ 20°C. Seed germinates within 3 months.
germination unlikely after dry storage > 6 months
Clematis rehderiana

C

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

9

At one time, we advised "Tails may inhibit germination. Remove them." The advice applied primarily to pulsatillas and clematises. Our most recent data indicates that leaving the tails on has no effect on germination.
Clematis repens

A

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