
Astilbe Leaves Turning Brown
I have a dozen astilbe plants that all look like they're been burned from
the inside of the plant out. Is this a fungus or a bug? These plants are four-years-old and until this summer have looked great.
A lack of water can cause the symptoms you described. Astilbes need moist soils and perform best in partial to full shade. Continue to water as needed throughout the fall. I have seen drought stressed astilbes return the following season. Continued drought stress will kill the plants. Next year keep the soil moist, not soggy and mulch. Apply a layer of shredded leaves, evergreen needles or other organic mulch to the soil surface to keep the roots cool and moist.
Related
Categories
Upcoming Webinars & Appearances
June is National Pollinator Month!
CLICK HERE for pollinator gardening webinars, videos & DIY projects
August 4 - 14
Wisconsin State Fair
Watch Melinda's past webinars ON DEMAND
Learn More