I have been growing a number of plants in pots in the backyard of my new house for the last few months. I've been starting most from seed in Jiffy pellets
, which seems very successful (most plants are thriving after starting this way). However...
After moving a few outdoors into pots with garden mix that is growing a bunch of things very well, certain plants (not all but a significant amount) are being struck down by a mysterious stem destroying disorder that is killing some but not others. It just withers small areas of the stalk, leaving most of the plant untouched. It's happened to plants that are from seed, from seedlings given to me by a friend, and from sprouts purchased from a local nursery. I have used no fertilizers or other additives in the soil, which I've used for a long time and is supporting quite a few plants with no problem. This winter has been rather wet here in Florida (I suspected over watering but it's not affecting all plants) but they have good drainage and I've moved them to where they are more covered and it still happens.
Tomatoes from a friend.
Of 4 seedlings, all had the issue but 2 have survived and are now thriving.
Sage from seed.
Sadly, it was unable to recover.
Strawberry bought from a local nursery.
Survived and is now going strong.
I am thinking it's possibly insects but I have seen none, and would expect it to spread to all plants if true. Also, destruction is limited to small areas of the plant, mostly the bottom 1/4 to 1/2 inch of the stem.
Help me Metafilter, you're my only hope.