there is a houseplant forum .. for further learning ... if it had been taken outdoors in my MI ... 3 weeks ago ... it would have a lot more problems than yours .. cold damage ... also.. its stressed from the change of circumstances.. e.g. going from the growers greenhouse ... to the seller.. and to your house ... so a little leaf loss is not that big a deal ... also .. in fall.. many plants lose their older leaves ... due to the changing season ... anyway ... its stressed.. and not looking all that bad ... just water it properly .. and it should put out some new leaves ... and being stressed.. does not mean its hungry .. fert is not a response at this time ... if you just got it from the store.. i am sure there is enough fert in that pot for months ... in spring .. when the growing season starts.. then some fert might be helpful ... ken ps: its not suffering.. its just reacting to change .... you are suffering.. try not to love it to death ...

Yes, let's talk about something like over 60 ft instead of 20 ft. Which is nothing for a tree. A walnut arising from seed would not yet be flowering at this small size.

It grows around Central Texas east of here.Sometimes the cops think it is Marijuana and arrest the people for it. Idiots. IT is an annual so get to it before it seeds.

Possibly some type of Curcuma ginger. There are many hybrids. Check out Gingerwood Nursery online and look at their Curcuma pics and see if you can find a match.