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Hello,

I just potted a Brazilian Rain Tree forest in a bonsai pot, was in a plastic trainer pot. I had it indoors for the winter and put it outside for a week to get adjusted before I did the potting. It was starting to yellow well before I did the potting but I thought it might have just been from being indoors for the winter and hoped that the potting would help. It's been a week and it looks way worse.

It has been very rainy here, so I am not sure if it's staying too wet, though my other bonsais look fine? The bonsai soil I got has a lot more dirt content than I am used to, but thought it was fine. I've only had bonsais for maybe 5 years and my longest is a Chinese Elm.

Any advice would be really appreciated, thank you in advanced
Chris

Hey Chris.

Well if you potted, just let it be for now, it will be growing new roots.

I don't think that spring/summer rains would be bad for a repoted tree, for me it actually helps, what can be bad tho, is windy weather, did you tied the trees? Wobling is bad.

Was spring too cold for it to be outside where you are? Because it's a big part of the growing season in general.

I did wire it down, though with it being the forest style it was a bit tricky. It doesn't wobble too much, but a slight bit. Should I try to snake another wire or two through and see if that helps, or just let it be for now?

I live in MA, US and the nights until maybe a month ago were hitting below 50 degrees. I was nervous to put them out too early since I have a Chinese Elm, Star Lavender, Ficus and this Brazilian and I read not to before 50 degrees.

Thank you

Oh, got it... If you wired it down it should be okay.

Sometimes I use a rooting hormone solution similar to superthrive that we have here in Brazil, since superthrive itself is very expansive around here, it surely helps the tree to react, so if you have some, you can consider using it, but I think it will be fine, on southern regions here in Brazil, BRTs do yellow leaves and go dormant, so a few leafs shedding shouldn't be a problem.

If you allow me to share my opinion:
I would consider separating them a year or two from now to thicken them individually for a few years, build some sctructure and then put them together on a forest, the way it is right now seems more like multiple trunk.

Good look with it!

Some general bonsai and cultivation points that may have been missunderstood here.

This is not what I would consider a forest style. A forest is trees planted individually in the same pot in order to look like.....Well, a forest. When trees is planted tight together like this it is normally concidered beeing a clump style.

Rooting hormone is used to tell the tree to grow roots where no roots is awailable. It is used in cutting propagation and air layering. It will have no impact at all on allready established roots. It will not make roots grow faster.

Other than that, this picture looks like a tree with quite normal repotting stress. The trees do not have enough roots at this point to support all leafs. Hence it is shedding the old less effecient ones. It can get worse before it gets better, it can even die If roots were prunded to hard. If it lives it will recover given time. You can help it by putting it in shade for a few weeks. Plastic bag over it may help as well, but be careeful, it can lead to fungal infections. Important to airate from time to time.

Tropfrog wrote:

Rooting hormone is used to tell the tree to grow roots where no roots is awailable. It is used in cutting propagation and air layering. It will have no impact at all on allready established roots. It will not make roots grow faster.

Hey Tropfrog, have you ever heard about the product just I mentioned (SuperThrive)? it's widely used to stimulate recently transplanted trees to produce roots, they having roots already or not, if you didn't do some research on it's uses.

Albas wrote:

Tropfrog wrote:

Rooting hormone is used to tell the tree to grow roots where no roots is awailable. It is used in cutting propagation and air layering. It will have no impact at all on allready established roots. It will not make roots grow faster.

Hey Tropfrog, have you ever heard about the product just I mentioned (SuperThrive)? it's widely used to stimulate recently transplanted trees to produce roots, they having roots already or not, if you didn't do some research on it's uses.

No, it was the first time I heard about this product. I reacted on rooting hormone that does not increase root growth. This product sais in the marketing that it has vitamins and rooting hormone. Now, they do not say what vitamins, but I have a guess. I have seen claims that vitamin B-1 can increase root growth, but without any backing up with proof.

When marketing promises more than scientific can proof, I always treat it with sceptisism. If this was in any way truth, it would be used in all comercial growing.

Root growth is enerized by photosyntesis and increased by nutritions and water.

It is widely used, I'm actually surprised you didn't know it.
Along of some other things it also contain NAA.

(Naphthylacetic acid, which is an auxin that can benefit root growth. Dr. Linda Chalker-Scott, Ph.D in Horticulture)
There are some good articles made by her on Horticultural Myths.

I am not as supriced as you are. I never use miracle products. Never did and will never do .

That's no miracle product, it's Biochemestry, there are neutral academic papers on the subject.

Let me try to understand:

1) You never heard about it.
2) You GUESS it doesn't work.
3) You pass your guess to another person as truth.

Sorry Tropfrog, but it sounds like you just want to problematize the topic.