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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Eryngium bourgatii 'Picos Blue'

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.
Eryngium caucasicum

A

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

1

Resents transplanting.

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.
Eryngium giganteum 'Miss Willmott's Ghost'

1

Resents transplanting.

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.
Eryngium maritimum

A

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

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.
Eryngium planum

B

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

B

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

B

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

B

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

Eryngium spinalba

!

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.
Eryngium tripartitum

A

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

J

Sow @4°C for 3 weeks, then place @20°C.
Eryngium x zabelii 'Big Blue'

?

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.
Eryngium yuccifolium

F

Sow @ 4°C.
Erysimum arenicola

A

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

A

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

A

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

A

Sow @ 20°C. Seed germinates within 3 months.
Erysimum x marshallii

A

Sow @ 20°C. Seed germinates within 3 months.
Erysimum 'Ellen Willmott'

?

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.
Erysimum 'Moonlight'

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.
Erysimum 'Orange Flame'

A

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

A

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

J

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

A

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

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.
Erysimum capitatum

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.
Erysimum carium

A

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

A

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

A

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

A

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

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.
Erysimum nivale

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...
Erysimum pieninicum

A

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

A

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

A

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

J

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

A

Sow @ 20°C. Seed germinates within 3 months.
Erysimum x cheiri

A

Sow @ 20°C. Seed germinates within 3 months.
Erysimum × marshallii

A

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

!

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.

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

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.
Erythronium montanum

H

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

!

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

Erythronium 'Pagoda'

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

*

This species needs special care as described.
grow in same pot for 2 years
Erythronium americanum

C

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

J

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

*

This species needs special care as described.

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

H

Use repeated cycles of 4°C, then 20°C for 3 months each. Germination is very prolonged.
grow in same pot for 2 years; see http://www.srgc.org.uk/bulblog/log2008/070208/log.html
Erythronium dens-canis

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.
takes 7 years to bloom
Erythronium elegans

!

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

Erythronium grandiflorum

H

Use repeated cycles of 4°C, then 20°C for 3 months each. Germination is very prolonged.
tiny sample; may require light
Erythronium hendersonii

!

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.
Erythronium multiscapideum

J

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

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.
Erythronium revolutum

D

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

!

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

Eschscholzia californica 'Sunshine'

A

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

N

Sow directly in garden.
Eschscholzia californica 'White Linen'

A

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

N

Sow directly in garden.
Eschscholzia caespitosa

A

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

1

Resents transplanting.