Germination Guide

Click on a species name below to see it's germination tips.
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Papaver lapeyrousianum

L

Expose to fluctuating outdoor winter temperatures including freezing for 3 months. Gradually increase light and temperature in spring.
Papaver lapponicum

G

Sow @ 4°C for 3 months, then place @ 20°C for 3 months.
Papaver lateritium

G

Sow @ 4°C for 3 months, then place @ 20°C for 3 months.
Papaver lateritium 'Nanum Flore Pleno'

2

Requires darkness.

A

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

A

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

3

Requires light or the small seeds should be surface sown.

4

Germination is improved by using GA3.
Papaver montanum

A

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

A

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

N

Sow directly in garden.

*

This species needs special care as described.
germinates best with gentle artificial heat
Papaver oreophilum

A

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

A

Sow @ 20°C. Seed germinates within 3 months.
Papaver orientale 'Allegro'

A

Sow @ 20°C. Seed germinates within 3 months.
Papaver orientale 'Fruit Punch'

A

Sow @ 20°C. Seed germinates within 3 months.
Papaver orientale 'Patty's Plum'

A

Sow @ 20°C. Seed germinates within 3 months.
Papaver orientale 'Turkenlouis'

A

Sow @ 20°C. Seed germinates within 3 months.
Papaver orientale v. bracteatum

A

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

3

Requires light or the small seeds should be surface sown.

A

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

A

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

A

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

2

Requires darkness.
Papaver pygmaeum

H

Use repeated cycles of 4°C, then 20°C for 3 months each. Germination is very prolonged.
poor germination
Papaver radicatum

L

Expose to fluctuating outdoor winter temperatures including freezing for 3 months. Gradually increase light and temperature in spring.
Papaver rhaeticum

A

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

A

Sow @ 20°C. Seed germinates within 3 months.
Papaver rhoeas 'Fairy Wings'

A

Sow @ 20°C. Seed germinates within 3 months.
Papaver rhoeas (Shirley mix)

A

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

A

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

A

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

3

Requires light or the small seeds should be surface sown.
Papaver somniferum

A

Sow @ 20°C. Seed germinates within 3 months.
Papaver somniferum 'Danebrog'

A

Sow @ 20°C. Seed germinates within 3 months.
Papaver somniferum 'Pink Chiffon'

A

Sow @ 20°C. Seed germinates within 3 months.
Papaver somniferum Lacinatum Group

A

Sow @ 20°C. Seed germinates within 3 months.
Papaver somniferum Laciniatum group

A

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

G

Sow @ 4°C for 3 months, then place @ 20°C for 3 months.
Papaver spicatum

A

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

L

Expose to fluctuating outdoor winter temperatures including freezing for 3 months. Gradually increase light and temperature in spring.
Papaver tauricola

A

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

A

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

A

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

L

Expose to fluctuating outdoor winter temperatures including freezing for 3 months. Gradually increase light and temperature in spring.
Paradisea lusitanica

E

Sow @ 20°C for 6 weeks, then place @ 4°C for 6 weeks, then slowly raise temperature to 10°C for 6 weeks. If there is no germination, repeat the cycle. This mimics fall sowing outdoors for spring germination.
Paradisea sp.

L

Expose to fluctuating outdoor winter temperatures including freezing for 3 months. Gradually increase light and temperature in spring.
Paraeum montanum

2

Requires darkness.

G

Sow @ 4°C for 3 months, then place @ 20°C for 3 months.
Parahebe perfoliata

L

Expose to fluctuating outdoor winter temperatures including freezing for 3 months. Gradually increase light and temperature in spring.
Pardanthopsis dichotoma

A

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

E

Sow @ 20°C for 6 weeks, then place @ 4°C for 6 weeks, then slowly raise temperature to 10°C for 6 weeks. If there is no germination, repeat the cycle. This mimics fall sowing outdoors for spring germination.

*

This species needs special care as described.
germination unlikely after dry storage; grow seedlings at a cool temperature
Parnassia fimbriata

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.
Parnassia glauca

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.
Parnassia palustris

A

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

3

Requires light or the small seeds should be surface sown.
Paronychia argentea

A

Sow @ 20°C. Seed germinates within 3 months.
Paronychia kapela subsp. serpyllifolia

A

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

A

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

H

Use repeated cycles of 4°C, then 20°C for 3 months each. Germination is very prolonged.
Parthenocissus quinquefolia 'Star Showers'

J

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

L

Expose to fluctuating outdoor winter temperatures including freezing for 3 months. Gradually increase light and temperature in spring.
low germination rate
Patrinia glabrifolia

?

We have no 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.
Patrinia gibbosa

!

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.

J

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

?

We have no 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.
Patrinia heterophylla

?

We have no 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.
Patrinia intermedia

A

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

A

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

A

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

!

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.