tomc wrote:I don't know a thing about brazilian rain trees. To my eye bones they look like legumes.
That's because they are legumes. https://www.bonsaitoolchest.com/download ... intree.pdf
In the turface I am watering as needed sometimes its twice a day sometimes its once, ............
I read someone was having a similar issue and it turned out to be lack of water. The tree was keeping it leaves closed to try and retain moister.
I only have a rudimentary understanding of bonsai medium, but turface is clay, and from the fact sheet on the raintree, they like to grow in sand. Factors like lighting aside -- I don't know if that's too much or too little, but I use T5HO (also from HTG) and that's a lot of light and warmth that close to the lamps. I go 8-10" off seedlings or they just cringe. But I might infer from its watering preferences that the turface, isn't maintaining a level that the tree, which really wants to grow in sand, likes. Would using a different inert material like haydite or permatil, or adding sand, be an option?
I had this document in my bookmarks from a few years back when hubby decided to grow a Barbados Cherry bonsai as a hobby. https://www.bonsailearningcenter.com/IMA ... /Soils.pdf
"Haydite is another brand name and is the rock equivalent
of turface. Similar products may be found marketed
under names such as permatil and staylite.
Like the turface it is full of tiny holes which
absorb water and release it back to the plant.
Some research even indicates haydite releases
water more readily than does the turface and is
less inclined to accumulate salts from watering.
Depending upon where it comes from, expanded
rock may be slightly pH acidic. This can be easily
corrected by adding a little horticultural lime to
the soil mix."
Or maybe, they're just shy. They look green and happy enough, though Perhaps just a little more time and some real sun and they'll get going.
That's a beautiful tree for bonsai... best wishes on that journey.