I'm near Houston, TX and Ive been gardening for probably 15 years and Ive never had issues like I have had over the last several. This year, most of my cole crops have failed. We have had a very warm and humid winter. I planted my transplant brussel sprouts in early october, and as of today, most are maybe about 1" taller than they were when I put them in the ground. They were fertilized with a complete fertilizer at planting. They havn't grown a bit. I'm also now pretty sure they have black rot. I don't have a black ring inside the stem, but the leaves are yellow and have black veins. The ones that don't arent probably going to make and sprouts by the time spring planting comes in.
I have had soil samples done last year, nutrient levels are great. I recently adopted a no till type of setup, so I'm heavily mulched...so no weed problems. I also installed a drip irrigation system so they get watered regularly when its needed.
I'm at a loss. Can a warm winter cause this? I'm now considering letting my 50x35 garden go fallow for 2 years to see if I can come up with something. I'm only using chemicals when I have to, which as of the last two years is a LOT.