Hydrangea - Mountain

Hydrangea serrata


PP#24,842; CBR#5125

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A small rounded specimen of Tiny Tuff Stuff mountain hydrangea covered in pink lavender lacecap blooms in a landscape bed near a sidewalk A fantastic looking specimen of Tiny Tuff Stuff mountain hydrangea blooming in a large decorative container Closeup of the dainty lacecap baby blue flowers of Tiny Tuff Stuff mountain hydrangea A flower covered specimen of Tiny Tuff Stuff mountain hydrangea in a landscape Closeup of several blue lacecap blooms of Tiny Tuff Stuff mountain hydrangea YouTube video describing the plant shown on this page
  • Improved hardiness
  • Reblooming
  • Colorful blooms

Compact, bud-hardy reblooming hydrangea. It's tough, but delicate - Tiny Tuff Stuff™hydrangea is extremely cold tolerant and beautiful. Extremely bud-hardy, each year it produces abundant lacecap flowers comprised of doubled sepals which appear on both old and new wood. While this plant leans to blue, the flower color may range from blue to pink to white.

4 - 9 (-30°F/-34.4°C)
Full sun, Part sun
1.5 - 2'
1.5 - 2'
Finish Time
.5 season
Bloom Time
Summer - fall
Flower Color
Blue, Pink
Foliage Color
Liner Sizes
4", Quick Turn


Moist but well drained soils are best. Mountain hydrangeas are less susceptible to wilting than bigleaf hydrangeas, but cannot take soggy conditions for any period of time. Tolerant of a range of soil pH levels, however, soil pH will influence flower color.


Avoid pruning mountain hydrangeas, except to remove any dead wood. These hydrangeas cannot be cut back or trimmed at any time of the year without impacting the bloom for either the current season or the next. Though they do rebloom readily on new wood, the best display comes from treating them as though they bloom only old wood.


Mountain hydrangeas can be used the same as bigleaf hydrangeas: perfect for flower gardens, cottage gardens, and seaside plantings. They also make a showy addition to foundation plantings and can be used for low hedges or edging.

Growing Tips

Mountain hydrangeas are from the same area of Japan as bigleaf hydrangeas but grow in the mountains instead of the seaside. As a result, they have naturally developed better cold tolerance and thus make an outstanding choice for gardens in USDA zones 5 and 6 especially.