shule1

I've grown it twice. This is my third year. I have some tips.

* Don't try to start it from seed under fluorescent lights. It vastly prefers sun. They can germinate under fluorescent lights (mine took a while), but they don't grow fast under them.
* The fruit is not ripe when it opens the husk, nor when it turns red. It takes quite a bit longer to ripen. It's ripe when the fruit easily detaches from the husk (the husk will most likely be shriveled up by then). If you have to tug it, it's not ripe. If it fell off the vine on its own before you got to it, then it's probably nearly overripe or fully overripe and fruit flies may lay eggs in it. I've never had bug issues with fruit still on the vine.
* In my climate, it grew a lot better from seeds I saved myself.
* The fruits are sweeter when it's cold for a while. The plants can survive down to about 17° F. or so. I'm not sure what temperature the fruits survive to, but it's below freezing.

In a very hot and dry year (2015; my first year growing it), most of the fruits tasted astonishingly weird (they may not have been fully ripe), but one or two of them tasted like a really, really good, sweet strawberry. I probably gave them too much basalt rockdust and potassium sulfate. The seeds were hard, that year. The plant didn't set fruit in the heat, but it waited until it cooled. It got some aphids and spider mites, but it survived fine. It had nice flowers that lasted a really, really long time before growing fruit. (It does need a pollinator, though). One of the plants got demolished by a fence-building crew (I could tell the other one missed it; the other plants were likely too far away to pollinate it). The plants all survived until it got to 15-17° F. The fruit survived until a few to several degrees warmer or so. I started them with light from fluorescent lights, but they weren't growing very much; so, I moved them to the windowsill where they grew normally.

The second year (from saved seed), I watered it with a sprinkler instead of with a hose only at the base of the plant. They got more sun. I didn't amend the soil as much. It did set fruit in the heat, without issues. The seeds were softer and not a problem to eat. The flavor was much less weird, but not as awesome as a really good, sweet strawberry. I guess they tasted a bit like cherries (but not particularly sweet or tart); I added sugar and they tasted a lot more like cherries. The ones that ripened after it had been cold for a while were sweeter (but still not as awesome as the ones that tasted like strawberries). I got a lot more fruit than the year before. No problems with aphids or spider mites whatsoever. The only pests were fruit flies that laid eggs in fruits that fell on the ground. I'm not sure if the plants survived as much cold in 2016, since I used most of the fruit before it got too cold; I don't think they survived as long in the cold (but maybe that's because they fruited a lot earlier). I saved a lot of seeds. Let me know if you'd like to try them. I started them in an unheated greenhouse; they took about as long as peppers to sprout.

I still need to transplant them, this year, but they're doing well and look nice. I started them in an unheated greenhouse again, this year. They sprouted faster than most peppers, this year. I think I had a few reseed this year a ways away from where the plants were. I didn't have any reseed in 2016.

I get the impression that the 2015 plants needed more acclimatization. I'm wondering how they'll do, this year (their third year).

I'm also curious what grafting a tomato on them or vice versa would be like. They may get a lot more cold-tolerance. Maybe the blossoms of tomatoes would be less likely to drop (I don't think I've ever seen a litchi tomato blossom drop; I think they all set fruit first).

The seeds look like eggplant seeds.

I'm thinking I might like to pickle them (with lactic acid producing bacteria), this year, and see what they taste like. They're kind of soft for pickles, though.