Will A Sour Cherry Tree Variety Pollinate A Sweet Cherry Tree Variety?

Question

I have a small yard with power lines about 30′ overhead. There would be about 20′ between trees

Answer 1

As long as the cultivars that you choose flower during the same period, then absolutely!

Here are articles for their care:

https://www.gardeningknowhow.com/edible/fruits/cherry/pollinating-a-cherry-tree.htm

https://www.gardeningknowhow.com/edible/fruits/cherry/cherry-tree-care.htm