A sweet nectar secreted around the rim of each tube on the pitcher plant attracts insects. When the insect enters the tube, tiny, stiff hairs pointing downward prevent it from escaping and eventually force the exhausted insect into the water. The plant then digests the insect by means of an enzyme secreted by glands located in the leaves. Sundew plants grow hairs on their leaves that produce a sticky substance that contains digestive juices. When an insect gets stuck on this substance, the hairs wrap around it or the leaves close.
More fluid then covers and suffocates the insect which is then digested by the plant.
Venus's-flytrap is probably the most recognizable of all sundew plants. It has hinged leaves that close and trap insects venturing into the open trap. The inside of each leaf has tiny hairs, and the rim is edged with long interlocking, stiff bristles. The closing of the trap is triggered by any pressure applied to six hairs, three on either side of the traps lobes. After the plant has captured the insect, a sap is secreted and digestion begins, which can take up to ten days.