Germination Guide

Click on a species name below to see it's germination tips.
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Senecio werneriifolius

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.
Senecio x siegfriedi

?

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.

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.
Senna covesii

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

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

A

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

A

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

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

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
Senna marilandica

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

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

J

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

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

A

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

A

Sow @ 20°C. Seed germinates within 3 months.
African badlands composite, probably A
Seriphidium vallesiacum

A

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

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

Serratula coronata f. alba

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

Serratula coronata ssp. insularis

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

Serratula coronaria

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

Serratula coronata v. insularis

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

Serratula seoanei

A

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

?

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.
Serratula tinctoria

A

Sow @ 20°C. Seed germinates within 3 months.
Seseli elatum ssp. osseum

A

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

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 'Feuer'

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.