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Queen of Pearls®

Royal Majestics® Hydrangea

Pure, glistening white mophead with blooms that emerge and mature chartreuse

A spectacular mophead hydrangea with blooms that start green, open pure white then mature to green. Blooms are offset by lustrous, disease-resistant foliage in a deep shade of green. Blooms spring to summer. Can be grown in Zone 5 with good winter protection. See 'General Maintenance" below for instructions on winter care protection in Zone 5, or 'Care and Planting'  below for Container Planting instructions for Colder Zones.

 

Hydrangea macrophylla 'HYMMAD I' PP#18,294

Queen of Pearls® Hydrangea

Blooms that start green, open pure white then mature to green

Great for container planting

Blooms spring to summer

Blooms are offset by lustrous, disease-resistant foliage in a deep shade of green

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Queen of Pearls®

Plant Profile

Plant Type
Deciduous Shrub
Light
Full Shade to Part Shade
Average Height
3' to 5'
Average Width
3' to 5'
Average Spacing
3' to 5'
Hardiness Zones
Zone 6-9 (-10°F to 30°F) (-23°C to -1°C)
Soil Moisture
Well-drained, semi-moist
Queen of Pearls®

Features & Uses

Features:

  • Disease resistant
  • Good for cut flowers
  • Mildew resistant


Uses:

  • Border
  • Container
  • Mass Planting
  • Specimen
  • Woodland, Shade Garden

Queen of Pearls®

General Maintenance

Pruning:

  • Dead head, remove old flowers
  • Prune to maintain size and shape
     

Fertilize:

  • Apply general purpose fertilizer in the spring when new growth appears. Check with your preferred garden center for your specific area.

Tips:

  • Add to white gardens - Glistening white mopheads add interest to moonlit gardens.
  • Winter Care for Zone 5 - During the cold winter months, add 2-3 inches of mulch around the plant to protect the roots from harsh temperatures. Pine straw, leaves, or pine bark mulch are all good organic materials that may be used in the garden. Since climates can vary, even among specific regions, please contact your preferred local garden center for recommendations.

Queen of Pearls®

Companion Plants

There are several plants that would make great companions in the garden or landscape.
The key to companion planting is selecting plants with similar cultural requirements. Below are a few suggestions:

 

Astilbe, Camellias, Hosta, Mahonia and Sarcacocca

Development Story

Developed by one of the world’s foremost horticulturalists and breeders, Dr. Michael A. Dirr, in association with the University of Georgia Research Foundation, the Royal Majestics® hydrangeas are certain to enthrall, intrigue and delight. As part of the Gardener’s Confidence® Collection, you can rely on them for easy growth, mildew resistance and beautiful blooms.

Development Story

Development Story

While the number of species within the genus hydrangea is thought to number two dozen or more, only five species are commonly grown in the United States. Of these, Hydrangea macrophylla, or bigleaf hydrangea, is the most well-known and popular. Originally cultivated in southern Japan, bigleaf hydrangeas thrive in Asia, North America, South America and Europe. As a matter of fact, the species is often referred to as French hydrangea, possibly due to its prominent place in French gardening.

Development Story

Development Story

There are two bigleaf hydrangea flower forms: lacecap and mophead (also known as Hortensia). Lacecaps are delicate in appearance, with large, prominent inflorescence (also known as the sepals) encircling many small flowers. Mopheads are arranged in a dense, hemispherical cluster. The Royal Majestics® series hydrangea selections include one paniculata (Baby Lace™), two lacecap (Midnight Duchess® and Princess Lace®), and two mophead (Queen of Pearls® and Mini Penny™) varieties.

Development Story

Development Story

Dr. Michael A. Dirr developed each of the Royal Majestics® hydrangea series selections as part of the Woody Plant Introduction Program in the Department of Horticulture at the University of Georgia. In addition to being an innovative and respected developer of cultivars, Dr. Dirr is the author of eleven books including Hydrangeas for American Gardens (Timber Press, 2004).

Development Story
Care & Planting

Care & Planting

The Royal Majestics® hydrangeas are a true gardener's plant with attributes that make them easy to grow. Plant in shade to partial shade (best with morning sun and afternoon shade). They make ideal borders, accents or mass plantings in groups of 3 to 5.

 

Baby Lace®

Unlike Hydrangea macrophylla selections, Hydrangea paniculatas love full sun.  Plant Baby Lace in a bright sunny area.  They make ideal borders, accents or mass plantings in groups of 3 to 5.

Care & Planting

Care & Planting

Planting Guide

  • Dig a planting hole twice as large as the root ball
  • Remove plant from container and place in planting hole
  • Level top of root ball with the ground
  • Backfill
  • Water
  • Mulch
  • Keep moist until established
Care & Planting

Care & Planting

Pruning

Midnight Duchess®, Princess Lace® and Queen of Pearls® varieties: If needed, prune for shape after spring flowering. Avoid fall pruning as flower buds are set in fall for the following spring.

Mini Penny™ variety: Remove spent flowers to increase blooms from spring to fall. If needed, prune for shape after flowering.

Winter Protection

Winter Protection

For Northern Areas

Colder than Zone 6

Try container planting in colder zones for a beautiful summer combination with grasses, annuals or perennials. Simply bring the container into a garage or basement during the cold months allowing the plant to go dormant during the winter. Keep moderately moist but well drained during this period (just enough to keep the roots semi-moist). Place the container outside again when temperatures rise above freezing and your plant will be ready for new spring growth.

Winter Protection

Winter Protection

For Northern Areas

Winter Protection Care for Zone 3

During the cold winter months, add 2-3 inches of mulch around the plant to protect the roots from harsh temperatures. Pine straw, leaves, or cypress mulch are all good organic materials that may be used in the garden. Since climates can vary, even among specific regions, please contact your preferred local garden center professional for recommendations for your garden.

Changing Flower Color

Changing Flower Color

Princess Lace®, Mini Penny™ and Lady in Red varieties: Determining what color your Hydrangea macrophylla will be is based on the pH of your soil. A low pH (acidic, levels 4-5.5) means that aluminum is readily available in the soil and your flowers will tend to be blue. A high pH (alkaline, levels 6-6.5) indicates less available aluminum in the soil and produces a pink color to the blooms. In the growing mix used by most nurseries, the sepals will be pinkish white to pink because aluminum is not present in the medium.

Changing Flower Color

Changing Flower Color

To blue the sepals, add aluminum sulfate. To have a pinker flower, add agricultural limestone, superphosphate or dolomite lime. Changing the color of the blooms can be tricky and variables in the pH of your water source can be a large part of the equation.

 

Consult your preferred Garden Center about rates and products to use for your specific area and be sure to follow the product directions as specified.

  • In the Garden

    In the Garden

    A spectacular mophead variety, Queen of Pearls® will not disappoint! Chartreuse blooms open pure white then mature back to green. The small, compact size makes it ideal for smaller spaces.

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