Princess Diana Hydrangea

Hydrangea macrophylla ‘Princess Diana’

Common Names: Hortensia hydrangea ‘Princess Diana’, Mophead hydrangea ‘Princess Diana’, Bigleaf hydrangea ‘Princess Diana’, Hydrangea macrophylla ‘H213’,

Plant Details

USDA Plant Hardiness Zones: 5a-9b Find Your Zone

Plant Type: Deciduous Flowering Shrub

Height at Maturity: 3-4′

Width at Maturity: 3-4′

Spacing: 3′ for solid hedges or borders; 6’+ for space between plants

Growth Habit / Form: Rounded Mound

Flower Color: Pink in alkaline soils, Blue in acid soils

Flower Size: 1.5″ in 6-8″ diameter clusters

Flowering Period: Summer through Early Fall

Flower Type: Double

Fragrant Flowers: No

Foliage Color: Green

Fragrant Foliage: No

Berries: NA

Berry Color: NA

Sun Needs: Part Shade (South) – Sun or Part Shade (North)

Water Needs: Average

Soil Type: Clay (amend heavy clay soil to ensure good drainage), Loam, Sand (amend quick draining soil to retain moisture), Silt

Soil Moisture / Drainage: Moist But Well Drained

Soil pH: 6.0 – 8.0 (Moderately Acid to Moderately Alkaline)

Maintenance / Care: Low

Attracts: Visual Attention

Resistances: Heat, Humidity

Description

Just when we begin thinking Hydrangea breeders can’t possibly create something new and truly different, along comes ‘Princess Diana’, a truly unique and stunning cross hybrid of Hydrangea macrophylla and Hydrangea paniculata. Blooming abundantly and repeatedly throughout summer and into fall, she displays large 6 to 8 inch diameter rounded clusters of star-shaped double flowers held on strong stems just above the compact mound of green foliage. The flower color is up to you. An alkaline soil makes pink to salmon pink shades. A neutral soil makes dark pink to purple shades, and an acid soil makes blue. Simply apply pelletized lime to turn blue to pink or Aluminum Sulfate to turn pink to blue. At 3 to 4 feet tall and wide, Princess Diana is an exquisite specimen for partially shaded smaller garden spaces and flowering shrub borders or in groupings or as a natural hedge where space allows. Also excellent in containers that can be situated on patios, decks, porches and balconies where the gorgeous flowers can be viewed from close up.

Learn more about soil pH and how to adjust it

Landscape & Garden Uses

Growing to about 3 to 4 feet tall and equally as wide, the Princess Diana Hydrangea is ideal for use as a specimen accent in partially shaded small garden spaces, flowering shrub borders and home foundation plantings. Can be used in groupings or as a colorful hedge in larger landscape and woodland borders. A fine addition to hydrangea gardens, pink or blue theme gardens and cottage gardens.

Suggested Spacing: 3 feet apart for solid hedges or borders; 7 feet or more apart for space between plants

Growing Preferences

The Princess Diana Hydrangea is very easy to grow in most any average, moist but well-drained soil and sun or part shade. The plants will tolerate full sun in northern zones with cool-summer climates however appreciate some shade or filtered sun during the afternoon in warmer southern zones. We suggest at least 5 hours of direct sunlight per day or all day lightly filtered sun for best flowering. You choose the flower color. An alkaline soil produces pink to salmon-pink shades while an acid to neutral soil produces blue flowers. Learn more about soil pH and how to adjust it. Learn more about soil pH and how to adjust it

Note: Princess Diana Hydrangea is an everblooming Hydrangea macrophylla species that produces its flowers from buds formed on both new and old wood. Prune as you would an Endless Summer hydrangea.

For proper pruning time and techniques on various types of Hydrangea see: How To Prune Various Types of Hydrangea

Helpful Articles

Click on a link below to find helpful advice from our experts on how to plant and care for Endless Summer Hydrangeas.

How To Plant Hydrangeas In The Ground & Pots

How To Prune Various Types Of Hydrangea

How To Fertilize And Water Hydrangeas

Plant Long & Prosper!

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