Hello! For context, I’ve never been good at keeping plants alive, but I’m trying more than I ever have with these. I planted a pack of cacti seeds I got from Saguaro NP back in September, and it contained Saguaro, Joshua Tree, and a couple other species that I’ve forgotten. Initially I planted them in dirt and small terracotta pots (pics 8 + 9), covered them for humidity, and let them sit on a windowsill. I also added fertilizer for succulents and cacti (pic 7). Once they started overcrowding those pots, I repotted them into larger plastic ones with soil from the same bag (pic 10) and a few died off in the following weeks, but I chalked that up to natural selection.…