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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Betula jacquemontii

G

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

G

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

J

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

3

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

G

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

J

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

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...
Betula pumila

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

Betula sp.

J

Sow @4°C for 3 weeks, then place @20°C.
Betula utilis 'Jacquemontii'

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...
Bidens ferulifolia

A

Sow @ 20°C. Seed germinates within 3 months.
Bidens 'Golden Eye'

A

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

?

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.
Bidens polylepis

J

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

A

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

6

Requires scarification. Nick or rub between sheets of sandpaper. See https://youtu.be/icB9HrqdQqU

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.
Blechnum penna-marina

A

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

*

This species needs special care as described.
pour boiling water over milled sphagnum moss, sow seeds, enclose in plastic bag
Blephilia ciliata

F

Sow @ 4°C.
Bletilla striata

A

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

*

This species needs special care as described.
sow in moist compost as soon as seed is ripe; include soil from an established plant to provide symbiotic fungi
Boechera koehleri

A

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

A

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

A

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

A

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

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

Boltonia asteroides

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...
Boltonia asteroides 'Jim Crockett'

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.
Boltonia asteroides 'Nana'

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...
Boltonia asteroides v. latisquama

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...
Boltonia lautureana

?

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.
Bomarea formosissima

A

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

1

Resents transplanting.

6

Requires scarification. Nick or rub between sheets of sandpaper. See https://youtu.be/icB9HrqdQqU

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

*

This species needs special care as described.
store in fridge till spring, then sow
Borago officinalis 'Alba'

1

Resents transplanting.

A

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

N

Sow directly in garden.
Borago officinalis

A

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

N

Sow directly in garden.

1

Resents transplanting.
Borago pygmaea

A

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

A

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

A

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

A

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

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...
Boykinia elata

B

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

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

3

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

!

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

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

Boykinia occidentalis

B

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

B

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

B

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

A

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

A

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

J

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

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.
Bracteantha bracteata

A

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

A

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

A

Sow @ 20°C. Seed germinates within 3 months.
Brassica oleracea 'Redbor'

A

Sow @ 20°C. Seed germinates within 3 months.
Brassica oleracea v. alboglabra

A

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

A

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

A

Sow @ 20°C. Seed germinates within 3 months.
Brassica oleracea v. acephala

A

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

A

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

A

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

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

*

This species needs special care as described.
soak in hot water
Brimeura amethystina

H

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

H

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

A

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