Hi mitchell Smith here, I have a couple of cycad palms in my front garden and they have reach the desireable height that i want for them. is there any eay to stop them growing any taller?
I do not recommend pruning them, as this may destroy the plant. There is, however, a natural growth hormone from the brassica plant family, called brassinolide. This is a non toxic substance that when sprayed can help regulate a plants growth, keeping it from stretching so tall.
This article will give you more information on cycads: https://www.gardeningknowhow.com/ornamental/foliage/cycads/growing-cycad-plants.htm