The Russian sage is a popular plant for home gardens with warm climates, particularly sandy soils with low amounts of moisture. The Russian sage is also not only loved for its blue-grey flowers, but for the lack of maintenance that is required. However, pruning the plants during the proper seasons will ensure that you have larger growths and blooms for longer periods of time.
When to Prune
The best time to cut back your Russian sage is in the spring months. This is right before new growths will start to appear. Generally, the Russian sage will bloom in the late summer and continue through the early fall months.
The size of the Russian sage can grow up to 4 to 5 feet high and 3 to 4 feet wide. Keep this in mind when pruning back your sage and remember not to clip off too much. Once you have determined that it is time to prune your plant, cut no more than 5 to 6 inches off of the stems. You will have beautiful growths in the fall.