Exactly where do you cut plants to propagate them? Slice just below the place a leaf attaches to the stem, that's the node. Usually do not go away Substantially stem below the node or that portion will rot. Many others, including zinnias, want warm soil and very hot summer season https://plantpropagation69257.blogsmine.com/32933833/propagating-plants-from-cuttings-things-to-know-before-you-buy