My short zinnias have brown dry leaves? Why?

Question

The petals of these plants also have small brown spots on them. They continue to bloom and look healthy except for these brown dry leaves which I pull off.

Answer 1

Here are a couple articles that will help you solve the problem:
https://www.gardeningknowhow.com/plant-problems/environmental/what-causes-brown-edges-on-leaves-of-plant.htm
https://www.gardeningknowhow.com/ornamental/flowers/zinnia/growing-zinnia-flowers.htm