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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Seseli gummiferum

B

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

J

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

F

Sow @ 4°C.
Sesleria glauca

A

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

A

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

G

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

H

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

2

Requires darkness.
Shortia soldanelloides

*

This species needs special care as described.

A

Sow @ 20°C. Seed germinates within 3 months.
use peat-based mix
Sibbaldia procumbens

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...
storage for 3 years improves germination
Sibbaldia tridentata

A

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

J

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

A

Sow @ 20°C. Seed germinates within 3 months.
Sibbaldiopsis tridenta 'Nuuk'

J

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

A

Sow @ 20°C. Seed germinates within 3 months.
Sibiraea altaiensis v. croatica

A

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

A

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

A

Sow @ 20°C. Seed germinates within 3 months.
Sidalcea 'Party Girl'

B

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

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

Sidalcea malviflora

A

Sow @ 20°C. Seed germinates within 3 months.
Sidalcea malviflora 'Alba'

A

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

A

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

J

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

A

Sow @ 20°C. Seed germinates within 3 months.
Sideritis 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.
Sieversia reptans

A

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

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

Sildacea 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.
Silene alpina

A

Sow @ 20°C. Seed germinates within 3 months.
Silene armeria 'Electra'

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.
Silene coronaria 'Hoarfrost'

3

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

4

A

Sow @ 20°C. Seed germinates within 3 months.
Silene coronaria 'Alba'

3

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

4

A

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

A

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

A

Sow @ 20°C. Seed germinates within 3 months.
BotanyCa comments: We obtained much better germination by sowing the classic way in late fall outdoors.
Silene repens

A

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

A

Sow @ 20°C. Seed germinates within 3 months.
Silene suecica var. oelandica

A

Sow @ 20°C. Seed germinates within 3 months.
Silene uniflora 'Ice Cups'

3

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

4

A

Sow @ 20°C. Seed germinates within 3 months.
Silene viscaria ssp. atropurpurea

3

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

4

A

Sow @ 20°C. Seed germinates within 3 months.
Silene x robotii

A

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

B

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

4

A

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

A

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

A

Sow @ 20°C. Seed germinates within 3 months.
Silene alpestris 'Ice Cups'

A

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

B

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

A

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

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...
Silene asterias

B

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

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...

4

Silene baschkirorum

A

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

A

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

A

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

A

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

A

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

3

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

4

A

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

A

Sow @ 20°C. Seed germinates within 3 months.
Silene coeli-rosa

B

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

A

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

3

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

4

A

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