why did my lily of the valley not get any flowers

Question

The leaves came in nicely this year, but none of the plants are flowering.

Answer 1

This article has general information: https://www.gardeningknowhow.com/ornamental/bulbs/lily-of-the-valley/growing-lily-of-the-valley.htm
Apparently some varieties do most of their flowering every other year. Some people have found LOV does better in acid soil. Also, too much nitrogen can cause plants to grow leaves but not flowers, so hold of on the fertilizer, if you're using that.