I grow these little white salad turnips from Johnny's call Hakurei. It's an early turnip (38 days) typically harvested young at about 1-2" and is very sweet and mild -- unlike any other turnips I've had.
I planted several beds this fall on 9/15, but couldn't keep up with eating them and never thinned the beds. I have two 4x10 beds of them. Some are 5-6" in diameter, other are lopsided ovals from being squished. Most are sitting on top of the bed with one bit of root barely in the ground, yet the tops are healthy and green. And when I say the bed is packed, under the greens the bed is solid white turnips. We've had a cold fall (for us) with several frosts and one hard freeze, but the ground doesn't really freeze here. We've also had some hot weather this fall. Despite the strange weather, these have flourished.
I decided to taste one to see if they were okay. They are more than okay, they are even milder and sweeter than normal. They are still smooth and not the least bit woody or tough. I sliced one up raw and am snacking on it now.
I had already marked this variety as a winner for taste, but for the south it seems these are a winner all around. Unlike most turnips, they don't store well once picked but apparently they store quite well in the ground. It's good to have another "keeper" vegetable for fresh winter eating!