AusBonsai

Hi all,
I posted this in deciduous despite my Jacaranda seedlings not having lost their leaves which is part of my question. I potted 4 young Jacaranda a few days ago with a little root prune each. I was waiting for the leaves to drop but they didn't, so I went ahead thinking if they were deciduous I should not wait any longer.
What experiences have others had? Should they be ok or was there a better time of the year to root prune?
Brgds
Stu

Jacaranda are late in dropping their leaves. Usually drop just before flowering here in Melbourne. Your repotted trees will be fine.
Cheers
Kirky

I just repotted and root pruned two Jacarandas this week. Neither had lost their leaves, but they had gone yellow. They are only young and first time I’ve done it so I’m interested to see what happens.

Jacaranda are pretty tough in my limited experience; I dug one out on a 45 degree day, with very little roots, and it pulled through just fine. None of mine have lost their leaves yet but they haven't seemed to stop shooting out new leaves either.

I'm in Brisbane and one of my Jacarandas leaves are all red and yellow, but not dropping, the other two are still green.

I've found in my climate they are tough as old boots, and can deal with even quite severe root pruning, so I'm sure your seedlings will be fine.

In Sydney Jac do not lose leaves until late winter, almost up unti flowering time ( as Bonsai they will not flower)
mine is currently yellowing off but still plenty green on it

Ken

Love that photo and tree Ken - thanks for posting. My Jacaranda bonsai have not lost their leaves yet and indeed, I don’t expect them too. My tridents never lost their leaves this year either - new spring growth is emerging on most of my trees now....


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Very nice aging specimen Ken . Would make a wild guess this tree must have gone through at least 20 winters? I've heard this species are difficult to flower in pot...has yours ever produced flower?

Hal wrote: ↑August 7th, 2020, 3:22 pm Very nice aging specimen Ken . Would make a wild guess this tree must have gone through at least 20 winters? I've heard this species are difficult to flower in pot...has yours ever produced flower?

Thnaks
first photo I have is in 2008 and the base of the trunk has mature bark on it and was after 4 trunk chops so yes must be be getting on for 20 years

IMHO no reason why Jac will not flower in a pot and i have heard of some that have, but certainly not as Bonsai though.
Reason is that we trim them to control the growth and on Jacaranda all of the flowers are grown only on the extreme ends of new growth. Guess what we cut off a tree to make bonsai?

I grow this for the awesoem bark and winter colour,
they have excellent ability to backshoot and take to wire nicely

Ken

MJL wrote: ↑August 7th, 2020, 2:49 pm Love that photo and tree Ken - thanks for posting. My Jacaranda bonsai have not lost their leaves yet and indeed, I don’t expect them too. My tridents never lost their leaves this year either - new spring growth is emerging on most of my trees now....


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Most tridents here are bare, but have a few Japanese ones that still have leaves. Go figure!

Ken

My teacher has a 35yr old penjing Jacaranda that has started to reliably flower over the last 5yrs, so far he only says "appropriately timed pruning and lack of" when asked how to achieve it

Elmer wrote:My teacher has a 35yr old penjing Jacaranda that has started to reliably flower over the last 5yrs, so far he only says "appropriately timed pruning and lack of" when asked how to achieve it

Your teacher of? Bonsai? Where are you based?


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kcpoole wrote: ↑August 7th, 2020, 4:48 pm I grow this for the awesoem bark and winter colour,
they have excellent ability to backshoot and take to wire nicely

Ken

I have a young group - I don't expect them to ever flower but I am loving tending them as bonsai and agree with Ken's comment above. A different (for me) and enjoyable bonsai subject.

Further, I am sure there is some great information on tending Jacaranda as bonsai via one of the QLD Bonsai Clubs...I just can't remember which one!

Here in Brisbane they mostly flower from late August to December, depending on their whims. It used to be known that if the jacarandas were flowering it must be exam time...but that doesn't hold true so much any more, since many are flowering much earlier these days. One even flowers regularly in April in my suburb, but not in Summer...

In saying that, they have a possibility of flowering if you don't prune them after late Spring. That means you're likely to have a pretty gangly tree...

As for care, they're tough, as I said, can take periods of random watering and heavy root pruning, plus they will shoot back on old wood if cut back hard. As you can see from Ken's tree, the leaves do get smaller in time, and they can make a very pretty little tree with lovely bark. Some of them colour up beautifully in late winter, then drop their leaves over a pretty short period....and then they'll flower either before new shoots, or at the same time as new shoots...depending on their whim.

pureheart wrote: ↑August 7th, 2020, 8:11 pm

Elmer wrote:My teacher has a 35yr old penjing Jacaranda that has started to reliably flower over the last 5yrs, so far he only says "appropriately timed pruning and lack of" when asked how to achieve it

Your teacher of? Bonsai? Where are you based?


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I am in the Hunter Valley and he is my teacher in growing potted trees, a term we both prefer over bonsai or penjing