Kenep seedlings (didn't expect them to grow!)

When I was out with a group of scientists who were studying the fish in our lake and surrounding areas, we bought some nice kenep (quenepa). I saved the seeds and brought them home and stuck them in pots with a plastic shopping bag over them. After a few weeks, two of three have germinated, and one is about 6 inches high with 6 full leaves. It's a healthy little tree, but it's in the smallest pot, a little 4 inch pot.

I'm wondering when I can safely plant this in it's permanent home? I'm afraid there's nowhere for the roots to go. Should I first plant into a larger pot? I don't want to give too much transplant stress. It's hot and dry here right now, though rains come periodically. I would put wire fencing on 3 posts around it to keep goats out, and then probably wrap white shopping bags around that to act as a greenhouse to protect from the harsh afternoon sun, and serve as a windbreak.

Suggestions welcome!

As early as possible usually reduces the transplanting shock. Furthermore, if you keep a plant for too long in a pot, it makes a mat of roots, which then dont go into the soil well.

However, I don't know your weather pattern, and if you have a few rainy days which would be good to plant it now. Therefore I will not say that planting early is the best for your situation.

Can you irrigate?

I think I can set up my makeshift drip irrigation . . . Consisting of one of these 2-gallon cooking oil jugs (cleaned out). I set it at the base of the tree that needs to be irrigated, or better, dig it down so it's right at or below the roots of the tree, on a mat of sugar-cane scraps to keep it from getting clogged with clay. Punch a single nail hole in the bottom corner and it's like a drip system. Fill it halfway every evening or so for the first week. I've used that before on newly planted trees, and they took off!

Once or twice a week I'll add a bit of urine to the water once the tree is showing new leaves.

Doing that in addition to wrapping the fence with white plastic bags should give it a pretty good environment to grow! Only problem is my machete is broken now, so I need to get some help cutting stakes for the fence.