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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Ochna serrulata
Full listing

!

Posted on August 3, 2011
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

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Ocimum basilicum
Full listing

*

Posted on August 3, 2011
This species needs special care as described.
germinate @ 25°C
Ocimum gratissimum
Full listing

*

Posted on August 3, 2011
This species needs special care as described.

3

Posted on August 3, 2011
Requires light or the small seeds should be surface sown. See https://www.youtube.com/watch?v=RgkXUSI1GWo&index=1&list=UUJfYCNSWCIuOB2...
soak in running water for 24 hrs. germinate @ 25 °
Ocimum sanctum
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Ocimum tenuiflorum
Full listing

*

Posted on August 3, 2011
This species needs special care as described.
germinate @ 25 °
Oenothera 'Colin Porter'
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Oenothera 'Lemon Sunset'
Full listing

J

Posted on August 3, 2011
Sow @4°C for 3 weeks, then place @20°C.
Oenothera acaulis
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Oenothera acaulis v. aurea
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Oenothera biennis
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.

3

Posted on August 3, 2011
Requires light or the small seeds should be surface sown. See https://www.youtube.com/watch?v=RgkXUSI1GWo&index=1&list=UUJfYCNSWCIuOB2...
Oenothera caespitosa
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Oenothera caespitosa ssp. marginata
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Oenothera campylocalyx
Full listing

J

Posted on August 3, 2011
Sow @4°C for 3 weeks, then place @20°C.
Oenothera cruciata
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.

3

Posted on August 3, 2011
Requires light or the small seeds should be surface sown. See https://www.youtube.com/watch?v=RgkXUSI1GWo&index=1&list=UUJfYCNSWCIuOB2...
Oenothera drummondii
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Oenothera flava
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Oenothera fruticosa ssp. glauca
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Oenothera kunthiana
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Oenothera macrocarpa
Full listing

B

Posted on August 3, 2011
Sow @ 20°C. If seed does not germinate within 3 months, try 4°C for 1-2 months, then 20°C again.
Oenothera macrocarpa ssp. incana 'Pewter Moon'
Full listing

B

Posted on August 3, 2011
Sow @ 20°C. If seed does not germinate within 3 months, try 4°C for 1-2 months, then 20°C again.
Oenothera missouriensis
Full listing

B

Posted on August 3, 2011
Sow @ 20°C. If seed does not germinate within 3 months, try 4°C for 1-2 months, then 20°C again.
Oenothera parviflora
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.

3

Posted on August 3, 2011
Requires light or the small seeds should be surface sown. See https://www.youtube.com/watch?v=RgkXUSI1GWo&index=1&list=UUJfYCNSWCIuOB2...
Oenothera perennis
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Oenothera rosea
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Oenothera sommemweiyae
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Oenothera sp.
Full listing

L

Posted on August 3, 2011

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

Oenothera speciosa
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.

2

Posted on August 3, 2011
Requires darkness.
Oenothera stricta
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Oenothera stricta 'Moonlight'
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Oenothera triloba
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Oenothera versicolor
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Oenothera versicolor 'Sunset Boulevard'
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Olsynium douglasii
Full listing

L

Posted on August 3, 2011

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

Olsynium douglasii
Full listing

L

Posted on August 3, 2011

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

Omphalodes cappadocica
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Omphalodes kuzinskyanae
Full listing

?

Posted on October 10, 2011
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.

2

Posted on August 3, 2011
Requires darkness.

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Omphalodes linifolia
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.

2

Posted on August 3, 2011
Requires darkness.
Omphalodes linifolia 'Venus Navel'
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.

2

Posted on August 3, 2011
Requires darkness.
Omphalodes linifolia alba
Full listing

2

Posted on August 3, 2011
Requires darkness.

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Omphalodes lojkae
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.

3

Posted on August 3, 2011
Requires light or the small seeds should be surface sown. See https://www.youtube.com/watch?v=RgkXUSI1GWo&index=1&list=UUJfYCNSWCIuOB2...
Omphalodes luciliae
Full listing

!

Posted on August 3, 2011
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

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.

2

Posted on August 3, 2011
Requires darkness.
Omphalodes luciliae 'Alba'
Full listing

!

Posted on August 3, 2011
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

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.

2

Posted on August 3, 2011
Requires darkness.
Onobrychis cadmea
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Onobrychis montana
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Onobrychis ruprechtii
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Onobrychis scardica
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Onobrychis sp.
Full listing

L

Posted on August 3, 2011

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

Onobrychis transsilvanica
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.
Onobrychis viciifolia
Full listing

K

Posted on August 3, 2011
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.

N

Posted on August 3, 2011
Sow directly in garden.

7

Posted on August 3, 2011
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
Onoclea sensibilis
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.

*

Posted on August 3, 2011
This species needs special care as described.
pour boiling water over milled sphagnum moss, sow seeds, enclose in plastic bag
Ononis rotundifolia
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.

2

Posted on August 3, 2011
Requires darkness.

6

Posted on August 3, 2011

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

Ononis spinosa
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.

1

Posted on August 3, 2011
Resents transplanting.

6

Posted on August 3, 2011

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

Posted on August 3, 2011
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
Onopordum acanthium
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.

5

Posted on August 3, 2011

Germination is successful only when GA3 is used. See http://botanicallyinclined.org/fridays-seeds-with-the-ga3-seeds-treatment

*

Posted on August 3, 2011
This species needs special care as described.
squeeze seeds to determine which are viable, 15% germination rate
Onopordum algeriense
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.

2

Posted on August 3, 2011
Requires darkness.

5

Posted on August 3, 2011

Germination is successful only when GA3 is used. See http://botanicallyinclined.org/fridays-seeds-with-the-ga3-seeds-treatment

*

Posted on August 3, 2011
This species needs special care as described.
squeeze seeds to determine which are viable, 15% germination rate
Onopordum boissieri
Full listing

L

Posted on August 3, 2011

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

*

Posted on August 3, 2011
This species needs special care as described.
squeeze seeds to determine which are viable, 15% germination rate
Onopordum carduchorum
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.

2

Posted on August 3, 2011
Requires darkness.

5

Posted on August 3, 2011

Germination is successful only when GA3 is used. See http://botanicallyinclined.org/fridays-seeds-with-the-ga3-seeds-treatment

*

Posted on August 3, 2011
This species needs special care as described.
squeeze seeds to determine which are viable, 15% germination rate
Onopordum illyricum
Full listing

J

Posted on August 3, 2011
Sow @4°C for 3 weeks, then place @20°C.

3

Posted on August 3, 2011
Requires light or the small seeds should be surface sown. See https://www.youtube.com/watch?v=RgkXUSI1GWo&index=1&list=UUJfYCNSWCIuOB2...
Onopordum messeniacum
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.

4

Posted on August 3, 2011

Germination is improved by using GA3. See http://botanicallyinclined.org/fridays-seeds-with-the-ga3-seeds-treatment

Onopordum nervosum
Full listing

L

Posted on August 3, 2011

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

*

Posted on August 3, 2011
This species needs special care as described.
squeeze seeds to determine which are viable, 15% germination rate
Onopordum sibthorpianum
Full listing

A

Posted on August 3, 2011
Sow @ 20°C. Seed germinates within 3 months.

2

Posted on August 3, 2011
Requires darkness.

5

Posted on August 3, 2011

Germination is successful only when GA3 is used. See http://botanicallyinclined.org/fridays-seeds-with-the-ga3-seeds-treatment

*

Posted on August 3, 2011
This species needs special care as described.
squeeze seeds to determine which are viable, 15% germination rate