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Author Topic: arisaema seeds  (Read 436 times)

Véronique Macrelle

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arisaema seeds
« on: June 13, 2024, 02:11:14 PM »
I've been ordering Arisaema propinquuum and thunbegii seeds from srgc for several years now, but I can't get them to germinate.
This year, I tried 6 weeks of hot, 6 weeks of cold, but still nothing.
Is there a particular technique for these species?
When I sow my own A. ciliatum Morello cherries, they germinate quite well.

otherwise dear forumists,
Do you know of a source of Arisaema seeds in UE?


Carolyn

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Re: arisaema seeds
« Reply #1 on: June 14, 2024, 03:21:25 PM »
Veronique, soak the dried seeds in water for 24 - 48 hours. Change the water several times to remove any germination inhibitors. Good luck next time! I have never tried thunbergii, but have germinated propinquum this way.
Carolyn McHale
Gardening in Kirkcudbright

Ben Candlin

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Re: arisaema seeds
« Reply #2 on: June 14, 2024, 08:07:18 PM »
Veronique, seeds of Arisaema propinquum (likely actually to be a part of the griffithii complex) are highly ephemeral. Seeds will need to be sown as fresh as possible, or stored in cool and just moist conditions to retain viability.

Arisaema thunbergii retains viability well, but they are hypogeal germinators, and so don't make a leaf in their first year. Instead they just make a small protocorm only and the leaf appears from year 2 onwards. I expect many people discard otherwise healthy pots of seedling tubers due to this.

Véronique Macrelle

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Re: arisaema seeds
« Reply #3 on: June 15, 2024, 05:55:06 AM »
thank you for your detailed answers.
 I suspected something like that. I've already tried A. griffithii and failed, and I'd read that the seeds were often not viable.
For thunbergii, I have a pot that has made its 2nd spring, and I have nothing yet. But last year it wasn't sown until mid-March. Do I still have hope for 2025?
keeping a seedling pot just the right amount of moisture for so long isn't exactly easy.

For species that germinate more easily, I've had some success with leaching, in particular this year I've got a nice pot of A fargesii (12 germinations) but for ovale, amurensis or consanguineum, germination is very sparse: only 1 or 2 plants.



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Véronique Macrelle

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Re: arisaema seeds
« Reply #4 on: July 16, 2024, 06:00:13 PM »
Here are the results of my Arisaema ciliatum seedling.
No matter what I do, the leaves turn yellow. I've read that their growing season should be extended as much as possible, but I haven't figured out how to do that yet.
These seeds come from my plants, which I fertilised with a pipette of water.
I had a good germination rate. The largest bulbils are 8 mm wide.
 is it possible to do better for this species?

 on the other hand, 3 germinations were late and the bulbs barely measured 2 mm. their leaves turned yellow at the same time as the others. I don't think these will survive the winter.
« Last Edit: July 16, 2024, 06:05:15 PM by Véronique Macrelle »

Carolyn

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Re: arisaema seeds
« Reply #5 on: July 17, 2024, 10:40:07 AM »
I find that first year arisaema seedlings often die back early. I just keep them in the same pot, fairly dry and protected from the worst of the frost over the winter. I pot them individually the next spring and they grow on just fine.
Carolyn McHale
Gardening in Kirkcudbright

Diane Whitehead

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Re: arisaema seeds
« Reply #6 on: July 17, 2024, 04:54:25 PM »
I get seeds from the Arisaema Enthusiast Group

https://florapix.nl/arisaema-l/
Diane Whitehead        Victoria, British Columbia, Canada
cool mediterranean climate  warm dry summers, mild wet winters  70 cm rain,   sandy soil

Véronique Macrelle

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Re: arisaema seeds
« Reply #7 on: July 17, 2024, 05:25:45 PM »

Did you order any this year, Diane?
I'd been told that AEG would cease trading after 2023, particularly for seed exchange, so I didn't check.

Diane Whitehead

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Re: arisaema seeds
« Reply #8 on: July 18, 2024, 12:45:33 AM »
No, but when I checked their website, it looked as though they still have seeds.
Diane Whitehead        Victoria, British Columbia, Canada
cool mediterranean climate  warm dry summers, mild wet winters  70 cm rain,   sandy soil

Véronique Macrelle

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Re: arisaema seeds
« Reply #9 on: July 18, 2024, 07:38:14 AM »
last year i ordered what was left in july and got 2 or 3 year old seeds of tortuosum and triphyllum, consanguineum: some germinated, others just a little (1 or 2) and still others not at all.
 I'd like to try other species.

The results of my Arisaema amurensis seedlings are disappointing: the tubers are only 2 mm wide. I've already sown this species 4 or 5 times (seeds from srgc or SAJA ), and I can't get past that stage. Usually, nothing comes back the following year. At least there are about ten of them here, whereas I usually only get 2 or 3.

 


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