what time of year to root plant cuttings ?

Question

sap rising or sap falling ?

Answer 1

If you are wanting to root a "softwood" plant, like an herb or flower, you should take the cutting in early spring when you can see that the new growth is still bendable and soft. If you're wanting to take a hard-wood cutting, it's better to wait until the plant or tree is inactive, in early winter or early spring. If you know whether the sap is high or low, I would think low is preferable.

Here's an article for you to read: https://www.gardeningknowhow.com/ornamental/trees/tgen/how-to-root-cuttings-from-various-shrubs-bushes-and-trees.htm