I originally thought this was a case of sunburn after bringing them outside, but now im second guessing myself. eveything seems to be growing normally, they are in partial shade for the last 2 weeks. i held off on watering the last few days and just let rain happen. the only thing i can think of is maybe i over fertilized them. whats ur opnions?
north carolina
nix of peat moss , peril lite and cactus mix
watering once every 2 weeks right now (slow season)
before it turned black it turned a soft pasty white. No mushy areas. this happened at the beginig of the grow season when i brought it out feom the garage
fertilizer has been a 10-10-10 once and then 4 weeks later i used granulated chicken manure. it turned white before i added fertilizer
it gets 6(ish) hours of mirning sun and then lite shade in the afternoon