I hunted boglings and got 2 of each color of cactus red blue and yellow. I set 1 each as my parent plants and let them self polinate to grow more cactus, and I crossed each one to the second set so i have bright red blue and yellow spider trees growing.
At the same time I also crossed the red blue and yellow parents to lots of other plants. Red yellow and blue of tribarrel cactus, barrel cactus, rushes, snake plants, just about everything on the list above. When I crossed my red cactus to a red plant it gave me bright red bonsai seeds, same with blue and yellow, when i crossed the red cactus to a blue plant, I got a purple bonsai plant. I'm working now on making bright purple, green and orange bonsai, but that's a couple of weeks away.
Lady Devil's own got a purple cactus by crossing a red cactus to a blue campions, but those are unpredictable, but I did cross a red cactus to a bright yellow campion and the gump shows white seeds. I'm keeping my fingers crossed. I was hoping to get some white bonsai but that hasn't happened so far.
When my spider trees grow up, I will cross them with my parent cactus to make colored hops.
This is so much fun, I definately can relate to not wanting to do anything but stare at my plant bowls and wish they'd grow faster.