Germination Guide

Click on a species name below to see it's germination tips.
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Nabalus altissimus

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

Napaea dioica

G

Sow @ 4°C for 3 months, then place @ 20°C for 3 months.
Narcissus 'Little Beauty'

!

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

*

This species needs special care as described.
grow seedlings cool; give them winter protection
Narcissus 'Little Gem'

D

Use repeated cycles of 20°C, then 4°C for 3 months each. Germination is very prolonged.
grow seedlings cool; give them winter protection
Narcissus assoanus

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

*

This species needs special care as described.
grow seedlings at cool temperature - best achieved by sowing in open ground
Narcissus bicolor

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

*

This species needs special care as described.
grow seedlings cool; give them winter protection
Narcissus bulbocodium

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

*

This species needs special care as described.
grow seedlings cool; give them winter protection
Narcissus calcicola

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

*

This species needs special care as described.
grow seedlings cool; give them winter protection; will bloom in 3 years; keep dry in summer
Narcissus juncifolius

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

*

This species needs special care as described.
grow seedlings at cool temperature - best achieved by sowing in open ground
Narcissus obesus

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

*

This species needs special care as described.
grow seedlings at cool temperature - best achieved by sowing in open ground
Narcissus requienii

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

*

This species needs special care as described.
Narcissus romieuxii

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

*

This species needs special care as described.
grow seedlings cool; give them winter protection
Narcissus romieuxii 'Julia Jane'

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

*

This species needs special care as described.
grow seedlings cool; give them winter protection
Narcissus rupicola

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

*

This species needs special care as described.
grow seedlings cool; give them winter protection
Narcissus serotinus

B

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

*

This species needs special care as described.
grow seedlings cool; give them winter protection
Nassella tenuissima

F

Sow @ 4°C.
Nasturtium sp.

A

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

A

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

!

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.

2

Requires darkness.
Nectaroscordum siculum ssp. bulgaricum

!

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.

2

Requires darkness.
Nemesia caerulea

A

Sow @ 20°C. Seed germinates within 3 months.
Nemesia cheiranthus 'Shooting Stars'

1

Resents transplanting.

A

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

N

Sow directly in garden.
Nemesia strumosa

A

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

A

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

A

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

2

Requires darkness.
Neomarica caerulea

A

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

A

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

A

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

A

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

2

Requires darkness.

*

This species needs special care as described.
grow on @ 10°C
Nepeta govaniana

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

Nepeta grandiflora

A

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

2

Requires darkness.
Nepeta hemsleyana

J

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

A

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

A

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

2

Requires darkness.
Nepeta parnassica

A

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

A

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

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

Nepeta subsessilis

A

Sow @ 20°C. Seed germinates within 3 months.
Nerine 'Isobel'

A

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

A

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

A

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

A

Sow @ 20°C. Seed germinates within 3 months.
Nicandra physalodes 'Black Rod'

A

Sow @ 20°C. Seed germinates within 3 months.
Nicandra physalodes 'Dark Star'

A

Sow @ 20°C. Seed germinates within 3 months.
Nicotiana 'Aztec Sweet'

A

Sow @ 20°C. Seed germinates within 3 months.
Nicotiana alata 'Grandiflora'

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.
Nicotiana 'Green Goddess'

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...
Nicotiana 'Lime Green'

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...
Nicotiana acuminata

A

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

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...
Nicotiana attenuata

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...
Nicotiana Domino Series

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.
Nicotiana glauca

A

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

A

Sow @ 20°C. Seed germinates within 3 months.
Nicotiana langsdorffii 'Cream Splash'

A

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

A

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

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...
Nicotiana Nicki Series

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.
Nicotiana paniculata

A

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

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...