No, plants that cross-pollinate are not called offspring.

Here's why:

* Offspring refers to the *result* of pollination and fertilization, meaning the new plant that grows from a seed.

* Cross-pollination is the process by which pollen from one plant is transferred to the stigma of a different plant.

So, cross-pollination is the *process* that leads to the creation of offspring. The plants that cross-pollinate are the parents, and the resulting new plant is the offspring.