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Post by seeschloss on Sept 30, 2021 6:36:38 GMT -5
Just wondering if anyone has successfully managed to grow one of those in a non-tropical area. It's supposed to tolerate quite low temperatures (-7°C or so). I once ordered seeds and one of them sprouted. That was (I think) in 2017 and here is the plant today four years later (in front of the picture):
So I would assume my environment isn't exactly what it's looking for. It's moved through a few different places, from a veranda that was very hot in summer and 10°C in winter, to inside the house with light and always around 20°C, to outside in direct sun for the summer... and it's never had more than a few leaves at once. Behind it in the picture is a vanilla plant that seems to grow fine so it seems to me that the conditions here should be good enough for a tropical plant.
It has also stayed as just a stick without any leaves for a year and a half at one point (with just a little green dot at one point which is why I kept it) and started growing randomly again one winter.
So if anyone knows about it I'd be interested.
PS. the third pot is Limonia acidissima, another citrus relative that gives woody fruits. That plant is also the same age and also not really thriving...
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Post by pagnr on Oct 3, 2021 16:40:08 GMT -5
I grew Wood Apple Limonia acidissima a few times. First time was in my usual Citrus seed raising mix, 30% Coir peat 70% coarse sand/grit. They grew ok from spring planting onward in an unheated glass house, but didn't make it thru winter. This is a Citrus growing area, so minimum is occasionally zero degrees C. Next Year I tried them in a similar Attapulgite based mix, ( Similar to harder perlite ). They did better this time with more drainage and more air, and possibly the Silica in the mix. Still lost them in the end, maybe 2 years ?? Possibly a winter heated glasshouse, or heat pad etc might have helped. The Limonia seed came from Cairns, I believe Feroniella is grown further south in Bundaberg. Bael I think grows further south again in Subtropical Nth Nsw. I was interested in Wood Apple as it was said to be graft compatible with Citrus. Citrus grafted on Wood Apple were induced to flower early, without the usual long seedling maturity. You may investigate the reverse graft ??
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Post by mikkel on Oct 4, 2021 14:12:22 GMT -5
I had no luck with Aegle, but Limonia grows in my greenhouse as small seedlings. Based on your report, I think I will take more care of them in winter. Maybe I'll bring them indoors. For me it is a slow grower. I hope to make grafting trials with it as soon as possible.
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Post by steffengot on Oct 5, 2021 0:00:31 GMT -5
My Limonia seedling are also loosing a bit the leaves now before the winter. It however also looses its leaves regularly in nature. So I would not couple that necessarily to bad cultivation. I will also try to overwinter them warm and see if they survive. Soon the fruits are again available and in the worst case I start new attempts with Limonia.
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Post by pagnr on Oct 9, 2021 18:46:10 GMT -5
The Bundaberg Citrus research station, 385 km north of Brisbane lists Feronia limonia, Ferioniella lucida and Feroniella oblate in the Arboretum collection. Feronia have now been reclassified to Limonia. That area is certainly outside the true tropics in Australia.
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Post by pagnr on Nov 14, 2021 3:01:10 GMT -5
From Citrus Breeding Workshop 1987 CSIRO " none of the Bael fruit group will hybridise with Citrus, although they have been successfully grafted on Citrus under glasshouse conditions" "Afraegle, A. paniculata has been used as a rootstock for Aegle ...but not successfully grafted to Citrus" "Aeglopsis seedlings make excellent rootstocks for Aegle, and also Balsamocitrus and Afraegle, but they have not been successfully grafted to Citrus."
"Feronia and Feroniella..Citrus can be grafted on both Feronia and Feroniella spp, and is then promptly forced into bloom. ( Pagnr says, note the forced blooming was also discounted in other reports. Not sure if that is final on the topic.) In india, Feronia has been tested as a rootstock where it causes dwarfing."
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pissp
New Member
Posts: 17
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Post by pissp on Nov 15, 2021 9:22:56 GMT -5
Is there a good publication(s)/resource on citrus inter-genus grafting compatibility? Its really interesting stuff but I'm having a hard time finding a lot of literature on the topic
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Post by pagnr on Nov 15, 2021 15:54:01 GMT -5
This info came from a publication Citrus Breeding Workshop 1987 CSIRO. Article was " An overview of the Family Rutaceae " by S. Sykes. Basically briefly discusses the potential of the Citrus relatives as rootstocks. I will try to get a PDF version available.
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Post by seeschloss on Jun 18, 2022 15:07:54 GMT -5
Just a followup, for this winter I built a kind of indoor greenhouse with strong lights and about 28°C (and minimum 15°C at night but it was rarely that cold) and both plants have resumed growing.
The Limonia acidissima responded rather fast while Aegle marmelos only really took off this month, so after about 6 months of tropical therapy. Since both are apparently normally deciduous though, maybe I should try to pay more attention to their growing conditions and establish a real periodic drought season for them.
Anyway, they're still around and they look a bit better now even if they're not mighty trees yet.
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Post by mikkel on Jun 19, 2022 13:52:27 GMT -5
I also built a mini greenhouse, similar temperatures as yours. Unfortunately, the Limonia seedlings still did not survive... Now I have another new seedling that is germinating. The germination rate of purchased seeds is very poor.
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