To provide both an apparatus for treating having a simple structure, high reliability of operation of the apparatus and a high throughput per unit time and capable of firmly binding bundles of flowers and ornamental plants and an apparatus for binding the bundles of the flowers and ornamental plants.

This apparatus for treating flowers and ornamental plants P is capable of making leaves fall, or the like, of the flowers and ornamental plants P in a first conveying part 1, measuring the weight with a measuring means 10, then dropping the flowers and ornamental plants P onto conveyors 30A to 30C by weight while conveying the flowers and ornamental plants P in a second conveying part 20, driving the conveyors 30A to 30C and taking out the flowers and ornamental plants P from the second conveying part 20 when a prescribed number of the flowers and ornamental plants P accumulate on the conveyors 30A to 30C, picking up bundles of the flowers and ornamental plants P in holding arms 64 of a transferring means 61, transferring the bundles of the flowers and ornamental plants P to a binding device 40 with the transferring means 61, binding the bundles of the flowers and ornamental plants P, then transferring the bundles of the flowers and ornamental plants P onto recovering stages 50A to 50C and recovering the bundles of the flowers and ornamental plants P by weight. In the binding device 40, the bundles of the flowers and ornamental plants P are compressed with a first pressure member, 81, a second pressure means 82, a first receiving member 88 and a second receiving member 89 and firmly tied with each string 70.