Rhododendron

Question

My rhododendrons, which were planted last year, did not bloom and bottom foliage is yellowing and falling.

Answer 1

Yellowing leaves can be an indication of water issues, to much or to little.

Here are some links to help you.

https://www.gardeningknowhow.com/ornamental/shrubs/rhododendron/rhododendron-care.htm
https://www.gardeningknowhow.com/ornamental/shrubs/rhododendron/rhododendron-not-blooming.htm