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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Salvia nemorosa 'Rose Queen'

A

Sow @ 20°C. Seed germinates within 3 months.
Salvia nemorosa ssp. tesquicola

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.
Salvia nutans

A

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

A

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

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...
Salvia patens 'Oxford Blue'

B

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

A

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

A

Sow @ 20°C. Seed germinates within 3 months.
Salvia pratensis 'Rose Rhapsody' (Ballet Series)

A

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

A

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

A

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

A

Sow @ 20°C. Seed germinates within 3 months.
Salvia sclarea 'Vatican White'

A

Sow @ 20°C. Seed germinates within 3 months.
Salvia sclarea v. turkestanica

A

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

A

Sow @ 20°C. Seed germinates within 3 months.
most interbreed and seed may not be what is labelled
Salvia splendens 'Lighthouse Red'

A

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

A

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

A

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

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...
Salvia subrotunda

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...
Salvia superba

A

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

A

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

A

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

A

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

A

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

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.
Salvia x sylvestris

A

Sow @ 20°C. Seed germinates within 3 months.
Salvia x sylvestris 'Blue Queen'

A

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

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.
Sambucus caerulea

J

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

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

Sambucus callicarpa

J

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

C

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

C

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

8

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

J

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

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.
Sandersonia aurantiaca

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...

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
Sanguinaria canadensis

!

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

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

germination unlikely after dry storage > 6 months. Gabriela Costea notes that fresh or moist packed seeds seeds can have two types of morphophysiological dormancy (after Baskin & Baskin): In the first case the roots will emerge in late fall after a warm stratification and the shoots growth will begin in the following spring (= after cold stratification); deep simple epicotyl dormancy. In the second case (said to occur (said to occur in about 49% of seeds according to a study), the shoots growth will begin in the second spring after sowing; deep simple double dormancy. It is well known that the germination dormancy traits have a genetic component.
Sanguinaria canadensis '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.

*

This species needs special care as described.

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

germination unlikely after dry storage > 6 months
Sanguisorba 'Little Angel’

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.

N

Sow directly in garden.
Sanguisorba officinalis 'Red Thunder'

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.
Sanguisorba 'Chocolate Tip'

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...
Sanguisorba albiflora

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

Sanguisorba armena

G

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

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...
Sanguisorba hakusanensis

B

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

A

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

B

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

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.
Sanguisorba parviflora

B

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

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

Sanguisorba stipulata

*

This species needs special care as described.
26°C gives 50% germination
Sanguisorba tenuifolia

B

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

B

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

B

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

B

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

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

N

Sow directly in garden.
Santolina chamaecyparissus 'Santa'

A

Sow @ 20°C. Seed germinates within 3 months.
Santolina rosmarinifolia ssp. rosmarinifolia 'Primrose Gem'

A

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

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

Saponaria 'Rose Gnome'

?

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