Germination Guide

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Rabdosia umbrosa var. leucantha

?

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.
Ramonda myconi

!

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...

B

Sow @ 20°C. If seed does not germinate within 3 months, try 4°C for 1-2 months, then 20°C again.
keep seedling at high humidity in plastic bag x 1 year; wait till second year to pot on
Ramonda myconi 'Rosea'

!

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.

B

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

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.
bottom heat helps,keep seedling at high humidity in plastic bag x 1 year; wait till second year to pot on
Ramonda myconi 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.

3

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

B

Sow @ 20°C. If seed does not germinate within 3 months, try 4°C for 1-2 months, then 20°C again.
keep seedling at high humidity in plastic bag x 1 year; wait till second year to pot on
Ramonda serbica

!

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...

A

Sow @ 20°C. Seed germinates within 3 months.
keep seedling at high humidity in plastic bag x 1 year; wait till second year to pot on
Ramonda 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.

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...
keep seedling at high humidity in plastic bag x 1 year, wait till second year to pot on
Ranunculus aconitifolius

!

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.
Ranunculus acris 'Citrinus'

J

Sow @4°C for 3 weeks, then place @20°C.
peat based medium
Ranunculus amplexicaulis

!

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.
Ranunculus bulbosus

!

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.
Ranunculus crenatus

!

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.

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

Ranunculus glacialis

!

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.

5

Germination is successful only when GA3 is used.
Ranunculus gramineus

!

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.

F

Sow @ 4°C.
Ranunculus hybridus

!

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.
Ranunculus lyallii

!

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.
Ranunculus millefoliatus

!

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.

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

*

This species needs special care as described.
ephemeral
Ranunculus montanus 'Molten Gold'

!

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.

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

Ranunculus obtusilobus

!

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.

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

Ranunculus parnassifolius

!

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.
Ranunculus pseudohirculus

!

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.

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

Ranunculus pyrenaeus

!

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.
Ranunculus 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.

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

Ranunculus thora

?

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.

!

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.

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.
Ranunculus yakushimensis

!

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

ephemeral
Ranzania japonica

!

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.

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

*

This species needs special care as described.
ephemeral, must be stored in berry and moist for short periods only
Raoulia australis

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.
Ratibida columnifera f. pulcherrima

A

Sow @ 20°C. Seed germinates within 3 months.
Ratibida columnifera f. pulcherrima 'Red Midget'

A

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

A

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

A

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

A

Sow @ 20°C. Seed germinates within 3 months.
Rehmannia elata 'Popstar'

A

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

A

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

A

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

A

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

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...
Reseda odorata

A

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

J

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

A

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

J

Sow @4°C for 3 weeks, then place @20°C.
check that seed shells are not empty
Rheum maximowiczii

?

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.
Rheum palmatum 'Atropurpureum Dissectum'

A

Sow @ 20°C. Seed germinates within 3 months.
Rheum palmatum 'Atrosanguineum'

A

Sow @ 20°C. Seed germinates within 3 months.
Rheum palmatum v. tanguticum

A

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

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.
Rheum tanguticum

A

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

6

Requires scarification. Nick or rub between sheets of sandpaper. See https://youtu.be/icB9HrqdQqU

*

This species needs special care as described.
soak in saltpeter solution
Rheum tataricum

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.
Rheum wittrockii

?

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.
Rhinanthus serotinus

G

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

*

This species needs special care as described.
parasitic; can survive and produce seed without host grass or clover but plants will be small; sow with caution in North America as it may become invasive
Rhinopetalum stenantherum

*

This species needs special care as described.

F

Sow @ 4°C.
grow seedlings at cool temperature; leave in pot for 2 years
Rhipsalis pilocarpa

A

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

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...
Rhodiola iremelica

3

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

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

Rhodiola japonica

A

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

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.
Rhodiola linearifolia

A

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

3

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

B

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

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.
Rhodiola sibirica

A

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

J

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