No they will not climb up branches to get crickets. They climb up the sides of the tank looking to escape but they will not venture up branches to go after crickets. Any crickets that venture up more than a few inches will be in the safety zone. I have branches and plants in my firebelly tank but it is only for looks and not for their enjoyment. They will more enjoy a large water section with floating plants and rocks to rest on. They are land based frogs who enjoy a dip in the pool. Save the trees for the tree frogs.