Delonix Regia Help!

[Ryleigh]

I grew a delonix regia from a seed and it was growing super well and super fast. Yesterday the leaves (all of them) started to droop and turn yellow and then today, they are all starting to fall off. I trimmed its roots about a week ago but I only took off about an inch. I read that over watering can be a cause of this but I haven't been watering it any more than I was when it was healthy. It's inside so it stays warm. What am I doing wrong? Is there anyway to fix the problem? Pictures below of what it looks like. Stem is still healthy.

 

[Forsoothe!]

I'm not an expert, but I have one, too, and they behave badly in winter. I have a cool greenhouse and it is just leafing out after being dormat since maybe October/November. It is from Madagascar, a tropical country. Like any tropical plant, when it is far enough outside its native climate range it will go dormant when the conditions are not good enough to grow. That might be a dry season in the heart of its native range, or a cooler period towards the far ends of its range, or any place where the sunlight is not as intense as it is on Madagascar. They go dormant in Miami, zone 10b, its furthest north range, and in Madagascar, too. Don't try to grow it continuously through winter. Don't let it get bone dry, but reduce water in winter and only water the crown a little. In spring, like now, increase water and it will come back to life. Not like it's at home, but better than dead. Summertime, outside in full sun. (You can't fool a plant into thinking it's summer by fertilizing in winter. Stop that.)

 

[Ryleigh]

I'm not an expert, but I have one, too, and they behave badly in winter. I have a cool greenhouse and it is just leafing out after being dormat since maybe October/November. It is from Madagascar, a tropical country. Like any tropical plant, when it is far enough outside its native climate range it will go dormant when the conditions are not good enough to grow. That might be a dry season in the heart of its native range, or a cooler period towards the far ends of its range, or any place where the sunlight is not as intense as it is on Madagascar. They go dormant in Miami, zone 10b, its furthest north range, and in Madagascar, too. Don't try to grow it continuously through winter. Don't let it get bone dry, but reduce water in winter and only water the crown a little. In spring, like now, increase water and it will come back to life. Not like it's at home, but better than dead. Summertime, outside in full sun. (You can't fool a plant into thinking it's summer by fertilizing in winter. Stop that.)

This is my first year with mine, so the leaves will just grow back then? It looks awfully naked right now!

 

[sorce]

Welcome to Crazy!

Sorce

 

[Forsoothe!]

This is my first year with mine, so the leaves will just grow back then? It looks awfully naked right now!

New year, new leaves. Leaves do not last more than one season.

 

[Matt H.]

As full size trees here in South Florida they drop their leaves in the winter and regrow in the spring.

 

[Forsoothe!]

Your first tree should have been a fig or Arboricola (dwarf Schefflera). Good houseplants and learning trees. Go forth and buy.

 

[Anthony]

A very poor choice for a Bonsai.
Leaflet dense.