trimming plants

Question

Should I trim Russian Sage from last season, and if I don’t, will it continue to grow larger?

Answer 1

Russian Sage is usually pruned every year to control the growth and to promote flowering. Pruning it is not completely necessary, though. The plant would most likely continue growing and spreading if not pruned.
https://www.gardeningknowhow.com/ornamental/flowers/russian-sage-flowers/russian-sage-care.htm