Tuff Stuff Top Fun™ Reblooming Mountain Hydrangea

Tuff Stuff Top Fun® is the selected cultivar ‘SMNHSG’ of Hydrangea serrata, a compact, reblooming mountain hydrangea with an upright, spreading mound and sturdy burgundy stems. Its lacecap clusters pair pink-to-purple sterile florets with green fertile centers and can turn blue in acidic soil where aluminum is available, as described by [Spring Meadow Nursery](https://springmeadownursery.com/plantfinder/tuff-stuff-top-fun-38000/), [Proven Winners ColorChoice](https://www.provenwinnerscolorchoice.com/plant/tuff-stuff-top-fun-mountain-hydrangea/), and [Hydrangea.com](https://hydrangea.com/products/tuff-stuff-top-fun%E2%84%A2-mountain-hydrangea). ## Flowering and garden use The plant reblooms on old and new wood from summer into fall. Its compact 2–3 foot size suits front borders, containers, edging, low hedges, cutting gardens, or mass plantings; dark green foliage takes on burgundy shades in late summer. Spring Meadow and Proven Winners list its mature height and width at 2–3 feet, consistent with the catalog’s existing 24–36 inch labels. ## Growing conditions Grow in full sun to part shade and moist, well-drained soil; provide afternoon shade in warmer climates. This cultivar is listed for USDA zones 4–9. Soil pH and aluminum availability affect flower color, while the named selection remains ‘SMNHSG’. [NC State Extension](https://plants.ces.ncsu.edu/plants/hydrangea-serrata/) recommends fertile, moist, well-drained soil and light or open shade in warmer climates. ## Maintenance Avoid hard pruning because the flowers form on old and new wood; remove only dead or winter-damaged stems in early spring. Keep soil consistently moist but not soggy, and mulch over the root zone to conserve moisture.