Germination Guide

Click on a species name below to see it's germination tips.
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Delosperma cooperi

A

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

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...
Delosperma sp.

A

Sow @ 20°C. Seed germinates within 3 months.
Delphinium 'Pacific Giants'

J

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

H

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

J

Sow @4°C for 3 weeks, then place @20°C.
Delphinium 'Blue Pygmy'

J

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

A

Sow @ 20°C. Seed germinates within 3 months.
Delphinium 'Galahad'

J

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

A

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

A

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

?

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.
Delphinium Astolat Group

J

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

J

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

J

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

A

Sow @ 20°C. Seed germinates within 3 months.
Delphinium Blue Fountains Group

J

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

!

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.

G

Sow @ 4°C for 3 months, then place @ 20°C for 3 months.
short viability
Delphinium bulleyanum

J

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

!

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.
short viability
Delphinium carolinianum

H

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

A

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

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

Delphinium consolida

!

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.
Delphinium decorum

J

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

!

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.

J

Sow @4°C for 3 weeks, then place @20°C.
Delphinium elatum Millennium Hybrids

A

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

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.
Delphinium glaucum

C

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

J

Sow @4°C for 3 weeks, then place @20°C.
Delphinium grandiflorum 'Summertime Blues'

J

Sow @4°C for 3 weeks, then place @20°C.
Delphinium grandiflorum 'Blue Butterfly'

J

Sow @4°C for 3 weeks, then place @20°C.
Delphinium grandiflorum 'Blue Elf'

J

Sow @4°C for 3 weeks, then place @20°C.
Delphinium grandiflorum 'Sky Blue'

J

Sow @4°C for 3 weeks, then place @20°C.
Delphinium grandiflorum 'Summer Blues'

J

Sow @4°C for 3 weeks, then place @20°C.
Delphinium grandiflorum 'Summer Morning'

J

Sow @4°C for 3 weeks, then place @20°C.
Delphinium grandiflorum f. album

A

Sow @ 20°C. Seed germinates within 3 months.
Delphinium grandiflorum plena

A

Sow @ 20°C. Seed germinates within 3 months.
Delphinium grandiflorum v. chinense

A

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

A

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

A

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

2

Requires darkness.
Delphinium Magic Fountains Series

2

Requires darkness.

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.
Delphinium menziesii

A

Sow @ 20°C. Seed germinates within 3 months.
seed has limited viability, store @ 3°C, temperature above 15°C inhibits germination
Delphinium novomexicanum

A

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

A

Sow @ 20°C. Seed germinates within 3 months.
Delphinium occidentale (x)

H

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

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

Delphinium orfordii

J

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

A

Sow @ 20°C. Seed germinates within 3 months.
Delphinium Pacific Giants

A

Sow @ 20°C. Seed germinates within 3 months.
Delphinium Pacific Group

A

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

F

Sow @ 4°C.
Delphinium ramosum

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

2

Requires darkness.
Delphinium semibarbatum

A

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

J

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

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

Delphinium Summer Skies Group

J

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

A

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

!

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.

D

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

*

This species needs special care as described.
germination unlikely after dry storage > 6 months
Delphinium vestitum

F

Sow @ 4°C.