TUFF STUFF AH-HA® Mountain Hydrangea

Zone: 5, 6, 7, 8, 9 Exposure: Full Sun, Part Sun Height: 2-3' Width/Spread: 2-3'

When it comes to blooming, Tuff Stuff Ah-HaĀ® hydrangea can’t stop, won’t stop! At first glance, it would appear that we decided to introduce this beautiful mountain hydrangea solely for its waterlily-like double florets. But that’s only part of the story – it’s also a prolific rebloomer. All summer long, it devotes its energies to creating flower buds on its new growth so that you have a constant supply of fabulous blooms from early summer through frost. Tuff Stuff Ah-HaĀ® hydrangea will bloom pink or blue, depending on soil chemistry.


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Light: For gardens at the cooler end of the hardiness range, it will thrive in areas with anywhere from four to six hours of sun and does benefit from shade. For gardens at the warmer end of the range, it benefits from placement in afternoon shade. It can experience some browning on the tops of the leaves called sunburn if itā€™s exposed to too much sun, this is a good hint that it needs transplanting to a shadier spot.

Soil: Prefers moist soil that drains easily. Soil pH and the presence of aluminum do affect flower color. In basic, also called alkaline, soils (pH of 7.5 or higher) the coloring will be pink. In acidic soils (pH of 6.5 or less), where the chemical element aluminum is present, the coloring will be blue or purple, depending on the plant.

Water: Has average water needs. It does not respond well to any period of extended sogginess, like overwatering or heavy continuous rain events.

Fertilizing: Nothing special required. If desired, you may apply a granular fertilizer formulated for flowering woody plants in late winter/early spring when the soil is workable.

Pruning: Pruning is not generally recommended. Although its flower buds are formed on both old wood and new wood, any cuts will impact its flowering potential. Dead or damaged wood can be removed at any time, just cut back to a set of leaves. If youā€™d like to prune to shape the plant, this can be done when the plant is starting to break dormancy in early spring or late winter, just look for swelling green leaf buds. Deadheading can be done after bloom, just follow the stem down to the first set of leaves and cut Ā¼ of an inch above them.

Other: Although they make a beautiful cut flower, keep in mind that harvesting can impact the future flower display.

Botanical Name

Hydrangea serrata 'SMNHSDD; PP#29,832; CBR#6515

Zone

5, 6, 7, 8, 9

Flower Color

Blue, Pink

Foliage Color

Green

Height

2-3'

Width/Spread

2-3'

Exposure

Full Sun, Part Sun

Soil

Moist

Season of Interest

Early Summer through Fall

Uses

Borders, Containers, Foundations, Specimen

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