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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Centaurea macrocephala

A

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

A

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

A

Sow @ 20°C. Seed germinates within 3 months.
Centaurea montana 'Gold Bullion'

A

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

A

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

A

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

A

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

A

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

A

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

A

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

A

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

2

Requires darkness.
Centaurea rupestris

A

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

2

Requires darkness.
Centaurea simplicicaulis

A

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

A

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

2

Requires darkness.
Centaurea tchihatchewii

A

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

A

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

A

Sow @ 20°C. Seed germinates within 3 months.
Centaurea uniflora ssp. nervosa

A

Sow @ 20°C. Seed germinates within 3 months.
Centaurea urvillei ssp. hayekiana

A

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

J

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

J

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

A

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

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...
Centella asiatica

*

This species needs special care as described.

A

Sow @ 20°C. Seed germinates within 3 months.
seeds will not germinate until aged 2 months
Centranthus ruber

A

Sow @ 20°C. Seed germinates within 3 months.
Centranthus ruber 'Coccineus'

A

Sow @ 20°C. Seed germinates within 3 months.
Centranthus ruber 'Mauve'

A

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

*

This species needs special care as described.

A

Sow @ 20°C. Seed germinates within 3 months.
see http://www.hardyorchidsociety.org.uk/HOS%201012/Cultivation.html; sterilize seed in bleach for 10-30 minutes, rinse in sterile water, sow on sterile agar
Cephalanthus occidentalis

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.
Cephalaria alpina

A

Sow @ 20°C. Seed germinates within 3 months.
Cephalaria alpina 'Nana'

F

Sow @ 4°C.
Cephalaria gigantea

B

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

B

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

B

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

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...
Cephalaria uralensis

A

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

*

This species needs special care as described.

N

Sow directly in garden.
outdoors in autumn
Cerastium alpinum var. lanatum

B

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

B

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

A

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

A

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

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.
Cerastium sp.

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.
Cerastium tomentosum

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...
Ceratostigma plumbaginoides

A

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

A

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

G

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

*

This species needs special care as described.

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.
scarify very gently or will rot
Cercis siliquastrum

*

This species needs special care as described.

6

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

H

Use repeated cycles of 4°C, then 20°C for 3 months each. Germination is very prolonged.
scarify for 20 minutes in 95% sulphuric acid. Caution: THIS CAN BE A DANGEROUS PROCEDURE. See http://journals.tubitak.gov.tr/agriculture/issues/tar-11-35-3/tar-35-3-5-1003-848.pdf
Cercocarpus montanus

G

Sow @ 4°C for 3 months, then place @ 20°C for 3 months.
Cerinthe major ssp. purpurascens

A

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

B

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

A

Sow @ 20°C. Seed germinates within 3 months.
Cerinthe major ssp. purpurascens

A

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

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.
Chaenomeles japonica

A

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

G

Sow @ 4°C for 3 months, then place @ 20°C for 3 months.
Chaenorhinum 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.
Chaenorhinum glareosum

A

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

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.