Pupation takes place in the main stem of the food plant.

Trees with a single main stem are in locations remote from these factors.

The trunk is usually crooked with more than one main stem.

Still, the most vigorous new shoots will be those near the top of the main stem, and that's where you want them.

They mine above the ground level in the main stem and branches of the tree.

A stalk can also be the main stem of a plant.

The largest is that of the main stem, which takes up 40 square miles.

The following winter, cut the main stem down to just below the top wire.

Count three buds along them from the main stem, then cut.

Shoots may also try to grow along the main stem.