Photo by Melody

PlantFiles: Bigleaf Hydrangea, Lacecap
Hydrangea macrophylla 'Mariesii Perfecta'

Family: Hydrangeaceae (hy-drain-jee-AY-see-ee) (Info)
Genus: Hydrangea (hy-DRAIN-juh) (Info)
Species: macrophylla (mak-roh-FIL-uh) (Info)
Cultivar: Mariesii Perfecta
Additional cultivar information: (aka Blue Wave)

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36-48 in. (90-120 cm)

4-6 ft. (1.2-1.8 m)

USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Sun to Partial Shade

Parts of plant are poisonous if ingested

Bloom Color:

Bloom Time:
Mid Summer
Late Summer/Early Fall


Other details:
This plant is attractive to bees, butterflies and/or birds
Average Water Needs; Water regularly; do not overwater
Requires consistently moist soil; do not let dry out between waterings

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:

Propagation Methods:
By dividing the rootball
From softwood cuttings
From semi-hardwood cuttings

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

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2 positives
1 neutral
No negatives

Gardeners' Notes:

Neutral bigcityal On Dec 3, 2005, bigcityal from Menasha, WI (Zone 5a) wrote:

I don't think this plant is happy in my zone 5a. It has winter dieback every year which keeps it small with very few flowers - about 2 a year! It says it can handle full sun, but that doesn't sound right for a big leafed hydrandea.

Positive lmelling On Dec 7, 2004, lmelling from Ithaca, NY (Zone 5b) wrote:

From the sources "Hydrangeas for American Gardens," by Michael A. Dirr (2004), and "Encyclopedia of Hydrangeas" C.J. and D.M. Van Gelderen (2004 - Timber Press):

A sturdy shrub with stout branches up to 6.5' high and wide. Flowerheads are rounded, the ray-flowers are blush pink, or light blue, sepals round and entire. Flowering time is from July to August. Unusually strong and hardy grower. Lustrous dark green leaves.

Haworth-Booth renamed this cultivar 'Blue Wave' (Van Gelderen says this is an illegitimate name, although one that is in general use and firmly established). Blue flowering plants sold are called 'Blue Wave' or 'Bluewave', and pink ones go under the original name 'Mariesii Perfecta', but it is certain that they are otherwise identical. Selected by Victor Lemoine of France in 1904.

Positive lupinelover On Jan 20, 2003, lupinelover from Grove City, OH (Zone 6a) wrote:

Flowers are blue even if grown in neutral or mildly alkaline soil. Very beautiful.


This plant has been said to grow in the following regions:

Monroe, Georgia
Baltimore, Maryland
Parkville, Maryland
Cheshire, Oregon
Nacogdoches, Texas
Seattle, Washington

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