|I have two huge Russian sage plants that are now 4 years old. Is it possible to start new plants from cuttings, or somehow divide the plants?|
|Russian Sage doesn't always take to root division. It does spread fairly vigorously by underground stems, as well as self-sowing, sending up new plants that could be dug up and moved elsewhere. Here's advice from New Mexico State University Cooperative Extension on propagating it:
Russian sage may grow roots from the cut stems if the cut base is treated with rooting hormones and the plants are kept in a greenhouse or other humid location while the roots form. Cuttings from Russian sage will probably be more successful in producing roots if you use cuttings taken in early summer (called softwood cuttings) rather than winter-pruned stems.
Russian sagemay also be propagated from root cuttings. Root cuttings are fairly large roots (diameter of a pencil) dug from near the base of the shrub and placed in a prepared soil. If kept moist, they may produce new plants.