@teznow08 Extension horticulturist Greg Stack responds: "A general purpose garden fertilizer is fine to use with astilbe. You can use the dry granular material. The best time to apply is when the flower buds are forming for next season which generally happens in late summer. So apply a small amount around each plant and water in very well."
Whats the best fertilizer to use?
teznow08 1 month ago
@teznow08 Extension horticulturist Greg Stack responds: "A general purpose garden fertilizer is fine to use with astilbe. You can use the dry granular material. The best time to apply is when the flower buds are forming for next season which generally happens in late summer. So apply a small amount around each plant and water in very well."
UIExtension 1 month ago