@Ttrichome I have never used any pesticide spray. I had this planter in a hole dug in the ground so it was flush with the ground but we were getting a bad storm that night so I brought it up on the deck and put it under my clear patio table. I don’t have a clue what happened. Like I said the other plant is perfectly fine and it’s been beside it the whole time. Gotten same amount of water/nutrients and sun