Certified GKH Gardening Expert
Can you include a picture, and a description of the type of soil that it is planted in? It could be that the pH is off, or that there is an actual nitrogen deficiency in the soil.
You can take samples to your local extension service in the meantime. They will be able to tell you what is wrong with your soil, if anything, and what you can do to fix it.
This article will help you find the closest extension service to you: https://www.gardeningknowhow.com/extension-search/