Thanks! I'll try to improve my seed placement. Using stormvine next to a chasm is a great idea.
Once I was in a room and a couple of enemies were coming from a corridor. I planted a firebloom right next to the corridor door, but the baddies just moved diagonally into the room!
Also, is it correct to say that flying enemies (such as fly swarms) don't activate the plants?
Thanks again. I need to start thinking more creatively! It didn't occur to me to throw things at plants to activate them.