Can anyone offer an explanation of what might have happened to this plant. One day it was growing beautifully, the next it was limp, so I thought it could benefit from a change to a lighter mix. The next day it literally looked as if it had been scalded with hot water!
The only change I had made earlier was to lower the height under the light a couple inches. I only watered as needed; but I did notice the moisture suddenly started to hold longer, that's why I changed mix.
This was my club project plant! The healthy plant beside it is my wife's project plant. She grows under natural light, I use artificial. What makes this especially painful is the fact that I am suppose to know what I am doing, and act as advisor in our club--yet so far mine is the only plant to bit the dust. I have no idea why!
I'm so sorry! Sometimes plants die for no apparent reason, but this one looks like it collapsed d/t some sort of toxin or stressor. What is your water source? How do the roots look? When you repotted, was there a sufficient sized root system of white roots, or a small amount of dark, thin roots? Is there time to start a new project--maybe with a mini?
It is almost certainly root rot or crown rot,probably both.When a plant stops using it's normal amount of water,it's usually an indication that it doesn't have enough good roots to suck up the moisture.Being chilled when wet can also cause this.
Maybe this would be a topic for your club to explore.
Another thing that might help you understand what happened is that possibly your wife's plant had a more developed root system to start with.Also,if either plant is a mini or semi-mini you might have to start with a tiny pot.Some of my minis are in little tiny Ketchup cups.I mention this only because her plant looks great,but the pot looks slightly large.
I don't think lighting was a factor.
There are many people here who know more than I do,but I hope this helps.