Species bigleaf hydrangea
Bigleaf Hydrangea macrophylla 'Venice Raven' CITYLINE VENICE - Rounded clusters of pale pink-purple blooms atop vibrant green foliage

bigleaf hydrangea

Hydrangea macrophylla 'Merritt's Supreme'

The bigleaf hydrangea (Hydrangea macrophylla 'Merritt's Supreme’) is a showstopping deciduous shrub. It boasts dramatic foliage of large oval-shaped leaves and long panicles of deep pink or lavender blooms in late spring and early summer. This cultivar is noted for its increased cold tolerance and showier blooms than other varieties. Not only does it make a stunning addition to any garden, its flowers are also excellent cut flowers. When planted in the proper environment and given regular watering and feeding, this classic plant can live for many years.

Cycle:

Perennial

Watering:

Average

Propagation:

Seed Propagation,Greenwood Cuttings,Hardwood Cuttings,Stem Propagation,Cutting

Hardiness Zone:

6 - 9

Flowers:

Pink to blue Flowers In Summer

Sun:

deep shade,filtered shade,part sun/part shade

Soil:

Acidic, Alkaline, Well-drained

Fruits:

blue,pink,white Fruits Ready In Fall

Leaf:

Yes

Leaf Color:

green

Growth Rate:

High

Maintenance:

Moderate

Care Level:

Medium

watering

Bigleaf Hydrangeas should be watered deeply once a week, allowing 1–2 inches (2.5–5 cm) of water for mature plants. Watering should occur in the morning, and you should avoid wetting the plant's leaves to help reduce the risk of fungal disease. During hot weather, you may need to increase watering slightly, watering twice per week. Make sure to water around the base of the plant, near the stems and leaves and not just around the perimeter of the pot or garden bed.

sunlight

Bigleaf hydrangeas (Hydrangea macrophylla 'Merritt's Supreme') prefer bright but indirect sunlight locations. They typically need about 2-4 hours of sunlight a day, ideally in the morning and late afternoon when the sun's intensity is less strong. If the plant receives too much direct sunlight it can lead to sunburn, so make sure to provide ample shade for this species.

pruning

Bigleaf hydrangeas should be pruned during the winter season, when the plant is in its dormant stage. If you need to remove broken, dead, or diseased branches, or to shape the plant, you can prune it lightly then. However, the amount of pruning should be minimal and only 1-2 shoots should be removed from the ends. Cutting away too much of the foliage will reduce the size and number of blooms the next season. Furthermore, if you are planning a major pruning session to shape the plant then you should do this just after the blooms have faded in the summer.

Season

Fall
Winter
Spring
Summer
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Starts Flowering

Bigleaf hydrangeas typically start flowering in late spring, usually in May or June.

Starts Flowering

Bigleaf hydrangeas typically start flowering in late spring, usually in May or June.

Harvest Fruit

The best time to start harvesting the fruits from Hydrangea macrophylla 'Merritt's Supreme' is in July and August.

Hardiness Map