Kill Moss Not My Thyme
My thyme intentionally grows through the paving gaps in the patio, so it's height if less that 1 cm. Therefore, how do I kill the moss that is throttling the thyme?
This link may answer some questions: https://www.gardeningknowhow.com/problems/weeds/killing-moss.htm
If you are asking if you can use a herbicide, any you might use would kill the thyme. If the moss isn't too widespread, you could pull it out by hand. Moss doesn't like sun or alkaline soil.