Dividing Russian Sage: A Simple Guide to Propagating This Hardy Perennial

Russian sage (Perovskia atriplicifolia) is a stunning, drought-tolerant perennial with silvery foliage and lavender-blue flower spikes. If your plant has grown large and you’d like more, division is the easiest and most reliable propagation method. The process is straightforward and, despite sounding harsh, is perfectly safe for the plant when done correctly.

When to Divide

Early spring, just as new growth emerges, or early fall (at least 6 weeks before frost) are ideal. This gives divisions time to establish roots before extreme temperatures.

Step-by-Step Division

1. Prepare the plant: Water deeply a day before dividing to reduce stress.
2. Dig up the clump: Use a sharp spade to cut a wide circle around the plant, then lift the entire root ball.
3. Split the root ball: Drive the spade through the center of the crown, dividing it into two or more sections. Each division should have healthy roots and several stems.
4. Replant immediately: Plant divisions at the same depth in well-draining soil. Space them 2–3 feet apart.
5. Water thoroughly: Keep the soil consistently moist (not soggy) for the first week to help roots re-establish.

Russian sage divisions typically bounce back quickly and will bloom the same season. This method yields true-to-type plants, unlike seed propagation which can produce variable offspring.