Carnivorous Plants
We have a couple of varieties of very clever and cunning carnivorous plants. The first one is the iconic 'Venus fly Trap' (Dionaea muscipula), and a number of 'Pitcher Plants' (Sarracenia). Both very effective non-chemical means of dealing with flies, wasps, weevils and other unwanted creepy crawlies. Infact the Sarracenia purpurea is also rather adept a catching slugs.
Both the Pitcher plants and the Venus Flytrap ideally should not be watered with tap water as accumulated salts in tap water may kill carnivorous plants. Don't feed them either as they receive their nutrients from their unsuspecting victims.
Sarracenia purpurea
Purple pitcher plant is a carnivorous plant with green/red tubular rolled leaves and pretty purple flowers in spring
Sarracenia x tara
This hybrid carnivorous pitcher plant has tall red/purple tubes with attractive red/purple flowers in spring