Kitty and Lilies

Alright, so I have a 2ish year old neutered male cat named Sebastian who've I've previously posted about on this forum because he has such issues with UTIs... But anyway, I know lilies are poisonous to cats and bought two lily plants to plant outside under the window.  Sebastian doesn't go outside and if he does, it's on a leash with me watching him like a hawk because he's managed to slip out of it a few times.  So I figured it'd be okay to plant the lilies outside.  Well, now I'm finding out that even the pollen is poisonous to kittys and I'm worried I may have made a mistake in planting these thins right outside the window.  Any advice?

Well, just one thing. Instead of using a leash, get a harness and your baby will be perfectly safe. They can't slip out of a harness. When it comes to keeping a kitty safe, a harness makes a world of difference.