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Tuff Stuff Red Mountain Hydrangea Hydrangea serrata

  • Hardy Zones
    • 5 - 9
  • Exposure
    • Part Sun to Sun
    • Sun
  • Season
    • Summer
    • Fall
  • Mature Size
    • 24 - 36 Inches
Proven Winners® Shrubs
Proven Winners® Shrubs
Tuff Stuff Red Mountain Hydrangea Hydrangea serrata
Part Sun to Sun 24 - 36


Colorful, beautiful, reliable.

Tuff Stuff Red is the newest edition to the Tuff Stuff series of mountain hydrangeas. These unique hydrangeas fare better in cold weather than their cousins, big-leaf hydrangeas, making them the perfect choice for landscapes and gardens in USDA zones 5 and 6. Large, lacecap flowers are a deep pink-red color which is set off by lustrous, deep green foliage. This reblooming hydrangea begins blooming in early summer on old wood and continues to produce flowers on new wood through autumn, ensuring a showy, abundant display. Small, rounded habit gives Tuff Stuff Red extra versatility in the landscape - grow it as a foundation planting, low hedge, edging, or specimen. 

Top three reasons to plant Tuff Stuff Red Mountain Hydrangea:

  • Better bud hardiness than big-leaf hydrangeas means more reliable blooming
  • Reblooming, so you can enjoy months of flowers
  • Very compact and tidy habit
Continuous Bloom or Rebloomer
Long Blooming
Deadheading Not Necessary


Plant Type: 
Shrub Type: 
Height Category: 
Garden Height: 
24 - 36 Inches
24 - 48 Inches
24 - 36 Inches
Flower Colors: 
Flower Colors: 
Flower Colors: 
Foliage Colors: 
Foliage Shade: 
Dark Green
Container Role: 

Plant Needs

Light Requirement: 
Part Sun to Sun
Light Requirement: 
Maintenance Category: 
Blooms On: 
New Wood
Blooms On: 
Old Wood
Bloom Time: 
Summer through Fall
Hardiness Zones: 
5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
Water Category: 
Soil Fertility Requirement: 
Average Soil
Soil PH Category: 
Acidic Soil
Soil PH Category: 
Alkaline Soil
Soil PH Category: 
Neutral Soil
Border Plant
Dried Flower
Edging Plant
Mass Planting
Specimen or Focal Point
Maintenance Notes: 

For best success with Tuff Stuff Red hydrangea:
- Some sun is necessary for best flower production, color, and stem strength. The warmer your climate, the more shade the plant can take, and in very warm areas, afternoon shade is essential.
- avoid pruning this plant except to remove any dead wood or dried blossoms in early spring.
- Fertilize in early spring, after the ground has thawed and before new growth begins, if desired.
- Plant tolerates a range of soil pH, however, flower color will vary depending on whether soil is acid, neutral or alkaline.

Fun Facts: 

Mountain hydrangeas grow in the same area of Japan as big-leaf hydrangeas, but they grow up in the chilly mountains instead of the mild coast. As a result, they've naturally developed better bud hardiness, which means that it will bloom even after harsh winters in zones 5 and 6.

Tuff Stuff Red Hydrangea serrata 'SMNMAKTSR' USPP 28,672, Can 5,789
  • Quite possibly the most beautiful hydrangea I’ve grown. Absolutely gorgeous blooms, but it’s the dark leaves and stems that really set this plant apart. It’s also by far the best looking plant I’ve ever mail ordered - huge, healthy and perfectly packaged.

    Outstanding My favorite plant, I recommend to others all the time and explain the reasons why I like it so much.
    Lisa Mason
    3 weeks ago
  • 1st year for this & I LOVE it. Has been fun watching it slowly burst into bloom . . . teaches 1 patience for sure. Its compact size drew me to it & it fit perfectly into a spot where I'd lost a plant. Thank you for always having plants I can trust & count on to perform the way anticipated. So grateful to have a Proven Winners employee in our area!!! Have a great day.

    Above Average Superior performance, among my favorites, would recommend to others.
    Ella Marshall
    United States
    1 year ago
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