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.
Click Reset anytime to start a new search.

Iberis aurosica

A

Sow @ 20°C. Seed germinates within 3 months.
Iberis saxatilis 'Pygmaea'

A

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

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.
Iberis amara

A

Sow @ 20°C. Seed germinates within 3 months.
Iberis amara grandiflora

A

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

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...
Iberis linifolia

A

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

A

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

A

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

F

Sow @ 4°C.
Iberis sempervirens 'Schneeflocke'

B

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

B

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

A

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

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...
Iberis umbellata

A

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

2

Requires darkness.
Ilex glabra

!

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

6

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

8

Pulpy coat inhibits germination. Remove by soaking and rinsing in clean water daily for approximately 7 days. Discard water.
Ilex 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

Ilex verticillata

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

8

Pulpy coat inhibits germination. Remove by soaking and rinsing in clean water daily for approximately 7 days. Discard water.

*

This species needs special care as described.
soak and rinse seeds in clean water daily x 2 weeks before planting
Ilex x meserveae

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

Iliamna remota

*

This species needs special care as described.

6

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

A

Sow @ 20°C. Seed germinates within 3 months.
seed is small, but still needs to be scarified using sandpaper or preferably nicked
Iliamna rivularis

A

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

6

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

*

This species needs special care as described.
seed is small, but still needs to be scarified
Impatiens balfourii

!

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.
Impatiens capensis

J

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

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

Impatiens parviflora

A

Sow @ 20°C. Seed germinates within 3 months.
Incarvillea delavayi ex 'Snowtop'

A

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

A

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

A

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

J

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

A

Sow @ 20°C. Seed germinates within 3 months.
Incarvillea delavayi 'Alba'

A

Sow @ 20°C. Seed germinates within 3 months.
Incarvillea delavayi 'Snow Top'

A

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

A

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

A

Sow @ 20°C. Seed germinates within 3 months.
Incarvillea mairei 'Alba'

J

Sow @4°C for 3 weeks, then place @20°C.
Incarvillea mairei 'Bee's Pink'

A

Sow @ 20°C. Seed germinates within 3 months.
Incarvillea mairei v. grandiflora

A

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

A

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

A

Sow @ 20°C. Seed germinates within 3 months.
Incarvillea sinensis 'Cheron Pink'

A

Sow @ 20°C. Seed germinates within 3 months.
Incarvillea sinensis 'Cheron'

A

Sow @ 20°C. Seed germinates within 3 months.
Incarvillea sinensis 'Snowtop'

A

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

A

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

A

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

A

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

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
Indigofera pseudotinctoria

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
Indigofera 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

Indigofera tinctoria

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

A

Sow @ 20°C. Seed germinates within 3 months.
clean pulp from seeds
Inula royleana

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.
Inula acaulis

A

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

A

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

A

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

A

Sow @ 20°C. Seed germinates within 3 months.
Inula ensifolia 'Compacta'

A

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

A

Sow @ 20°C. Seed germinates within 3 months.
Inula helenium 'Goliath'

A

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

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

Inula macrophylla

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

Inula magnifica

A

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

A

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