We have sprayed roundup in a ditch full of sandburs but a pretty good distance to the north of my garden. Is this something that can happen even if the plant gets a wiff of it? I have been careful to watch for pests to be eating on them and have not seen any. The plants started out with the bumps then Crack open. I do have a mole problem in my garden and have wondered if that's not part of the issue. I have 20 tomato plants and they are all doing this. Some have bore fruit and others not. This is the third year my plants have ended up this way. I'm not so much worried about correcting this years plants but would like to know how to prevent them from going this way next year. Love gardening but not with the turnouts I have had the last couple years. Thank you much for your input.

Ok, so overwatering was not the problem, because when I let the soil dry an extra day compared to before, the leaves have begun to dry up (wrinkled, shriveled, headed for crispy). I’m now wondering if the MaxiGro nutrients are not working well with grass. (I’ve used it successfully with other potted perennials). So to change that up, I sprinkled 1 TBsp of slow release Miracle Grow into the top layer and watered deeply. If if this doesn’t improve things, then my next guess will be the potting medium. But again, other plants have done well in the Perlite amended coir. I was trying to avoid peat.

Can you remove the plant from the pot and inspect the root ball? Look for how wet or dry the bottom is and what condition the roots are in.

If you also see red or brown spots (could be underside), or spots with dark or yellow borders and grey centers, you have a fungal disease caused by spores carried in the wind and humidity. Follow the link and scroll down to look at the pics -- any of them match what you have? https://plantvillage.psu.edu/topics/banana/infos/diseases_and_pests_description_uses_propagation