Q.My 5 Year Old Russion Sage Plants (35 Of Them) All Their Leaves Are Turning Yellow.
These plants I grew from a samll root and they grew beutifully, bloomed, cut back in winter and they came back every year. This summer they’ve bloomed but all their leaves are turning yellow.
Certified GKH Gardening Expert
Make sure they aren't being overwatered. If not, they may need some fertilizer or to be divided. Here are best growing tips: