I'm growing two varieties of beets this year, Guardsmark Chioggia (an open-pollinated pink/white candystripe beet) and Boro F1 (a classic-red hybrid). The Chioggia are doing great in one row, but the Boro even in the same row (ended up with a few at the end), and the Chioggia in another row that's also mixed, look generally wilted and unhappy—the leaves are pale yellow-green, drooping and floppy, and older leaves seem to shrivel up quite quickly (though I know beets just do this in general where e.g. chard might not, or not as soon).
I think they've been exposed to too-high temperatures in the past—I've learned that the beet/chard family Do Not Like being under floating row cover once summer gets going, so I'll be sure to take that off sooner next year—but it's been several weeks since then.
I gave some of them some water when I noticed the problem, and that seemed to help, but I was surprised as the soil was definitely moist once you got a couple inches down, even if the surface was pretty dry. They were at least 4" high at this point so I thought they'd be able to reach that deep? More recently it's been very rainy, and I got some thicker mulch around them before the rainy period, but that hasn't seemed to help.
Is it likely they're just too stressed from early heat to recover, or is there something else that might be going on? In any case, is there anything I can do to help them out, or just let them do their best and try for a fall crop? The larger ones are developing roots even though the tops look pretty bad, so that's good at least.
