It's about 3 feet tall right now, and gets pretty windy up here at Bizzle's Hilltop Garden. I really don't want to get robbed by a storm but I feel like it's been growing without support for millions of years so I don't know.
That's my dog in the back, he's a bad boy but I love him anyway.
If it can make deep roots, it should be fine barring any actual storms, I guess.
Support never hurts though.
If you're afraid of it getting too tall and want to "instruct" it to get bushier instead of taller, you can top it, aka break apical dominance, squeeze the top most growh tip a little bit to break it. Or just top completely.
It won't mean less or more yield or size, necessarily, it'll just grow wider instead of taller.
Also also, it looks very good, but I think you can give just a tiny bit more fert than you have now. Like genuinely a tiny bit, but it's just doing so well I can see from the slightly light hue of green that it could definitely use more nitrogen. As in, the plant can utilise a bit more of it than it's getting now, imo, despite not currently having a deficiency.