what is the best temperatures for yarrow?

Question

describe please humidity of yarrow

Answer 1

This plant grows in USDA zones 3-9, and is not particular about the humidity levels. This plant grows so easily that it is classified as invasive in many areas.

This article will give you more information on the plant: https://www.gardeningknowhow.com/edible/herbs/yarrow/growing-yarrow.htm