This is an aribibi gusano plant that had been growing rather nicely for a time, but ever since its growing tip split, the leaves have been coming out deformed and brown as pictured. It's growing in peat-based Pro Mix premium that was fortified with a bit of worm castings and a sprinkle of azomite. Past that, they've just been getting a deep watering whenever the top inch or so of soil feels dry and as much sunlight as they can take without drooping.
It also has dropped a few developed leaves from the upper part of the plant, and they generally started showing symptoms like this before they fell off.
All of my plants growing in the same medium display similar symptoms to varying degrees.
From doing research I've seen it suggested that this could be a calcium uptake issue or possibly nutrient burn though the latter seems a bit unlikely as the symptoms took a long while to develop after I initially transplanted them up from one gallon fabric pots into seven gallon fabric pots.
I haven't actually done soil/water PH testing to make sure things are okay in that regard, though. I've also noticed that the root systems of the plants growing in the Pro Mix tend to be rather sparse regardless of whether I use the mix straight out of the bag or fortify with organic fertilizer unlike similarly-sized nursery plants that tend to be a solid mass of roots by comparison.
It also has dropped a few developed leaves from the upper part of the plant, and they generally started showing symptoms like this before they fell off.
All of my plants growing in the same medium display similar symptoms to varying degrees.
From doing research I've seen it suggested that this could be a calcium uptake issue or possibly nutrient burn though the latter seems a bit unlikely as the symptoms took a long while to develop after I initially transplanted them up from one gallon fabric pots into seven gallon fabric pots.
I haven't actually done soil/water PH testing to make sure things are okay in that regard, though. I've also noticed that the root systems of the plants growing in the Pro Mix tend to be rather sparse regardless of whether I use the mix straight out of the bag or fortify with organic fertilizer unlike similarly-sized nursery plants that tend to be a solid mass of roots by comparison.