Question: Purchased dwarf fruit trees but don't know how close the two apple trees have to be to pollinate each other.
Answer: Your trees can be planted 50' apart and the insects will still be able to transfer pollen to and from both your trees. Plant them within line of sight of each other and everything will be just fine.
Q&A Library Searching Tips
When singular and plural spellings differ, as in peony and peonies, try both.