How to Harvest Shoots From Bushes

Question

Two year old Korean miniature lilac bushes and five year old white hydrangea bush.

Answer 1

These articles will help you:
Hydrangea: https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/hydrangea-propagation.htm

Lilac: https://www.gardeningknowhow.com/ornamental/trees/tgen/how-to-root-cuttings-from-various-shrubs-bushes-and-trees.htm