tahoebanana

This season my Namwah went from looking extremely healthy to not being able to put out any healthy leaves. It first started with new leaves emerging with deformities - mainly leaves seemed narrower and edges were crinkled. Now it is almost as if leaves are emerging not fully developed (are narrow and damaged and often have yellow/black scorch marks starting on edges). Any idea what is going on? I have loaded some photos to my photo gallery if helpful.

subsonicdrone

it might be due to the cold
ease up on watering and fertilizing until it is warmer out

Reminosys

Looks like primarily a calcium/boron deficiency:
https://www.sciencedirect.com/scienc...52340923002743

Usually dolomite lime (or an equivalent) plus a small amount of regular borax helps it recover. Boron helps with calcium uptake. I can't recall the specific ratio, a Google search should turn something up. Those leaves will stay deformed, but successive new leaves will gradually look better as the plant takes up nutrients. Patience is key, borax/boron can easily become toxic if too much is added.

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Aspiring botanist | Trash horticulturist