It's more difficult to provide that kind of "recipe" in Plant Tycoon, because the breeding results are more variable than they are in Fish Tycoon, and there are many more combinations that work, as well. Add to that the fact that the plants don't have names, and the problem is compounded even further. For the cactus, I can tell you that one way is to concentrate on working with the round, bluish cactus and the taller, branching cactus along with blue flowers and white flowers. For the second one, play with the plant that looks like a coleus and the one that looks like baby's tears (a low, delicate, trailing plant) that have the red-and-yellow flowers and the peach-colored balls. I hope that helps a little bit!