I am an amateur gardener trying to grow Detroit red beets for the first time. I have them in a raised container and planted them approx 1 month ago. They were growing fine, but suddenly the leaves have turned yellow and spotty, almost as if there is a fungus or mold on them. I have more beets growing in another container next to them and they are fine. Same soil, (mostly,) same watering schedule, etc. Any insight?
Thanks in advance for any guidance.