Northwest Blooms · Shrubs
Hydrangea macrophylla ‘Merritts Supreme’
Merritts Supreme Mophead Hydrangea

- Family
- Hydrangeaceae
- Height
- 3 to 4 feet
- Width
- 3 to 4 feet
- Flower color
- Deep pink to rich blue, depending on soil pH
- Foliage color
- Dark green
- Bloom time
- Early to mid-summer
- Light
- Partial shade to full sun
- Water
- Moderate
- Maintenance
- Low; prune after flowering if needed
- Growing zone
- USDA zones 6 to 9
- Wildlife
- Attracts butterflies and bees
About this plant
Hydrangea macrophylla 'Merritts Supreme' is a deciduous shrub admired for its large, vibrant mophead flower clusters that bloom in mid to late summer. The flowers can range in color from deep pink to rich blue, depending on the soil's pH, with the potential to display striking purple hues. The dense, rounded blooms are set against dark green, glossy foliage, which provides a lush, contrasting backdrop. As the season progresses, the flowers often take on deeper, more intense shades, adding dynamic color to the garden.
'Merritts Supreme' is particularly prized for its bold floral display, making it a standout choice for borders, containers, or as a focal point in the landscape. Its long-lasting blooms also make an excellent choice for cut flower arrangements and can be enjoyed fresh or dried.
Works well in
Shade Gardens · Foundation Plantings · Cut Flower Gardens · Cottage Gardens
Companion plants
Pieris · Japanese forest grass · Brunnera · Viburnum · Trillium · Lungwort
Design tip
Use ‘Merritts Supreme’ as a focal point where its large mophead blooms can provide a concentrated area of color. Limiting other bold flowering elements nearby allows the rich blue, pink, or purple tones to command attention without visual competition.
Where to see it
This plant can be seen at Bellevue Botanical Garden.
