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PlantFiles: Bigleaf Hydrangea, Lacecap
Hydrangea macrophylla 'Rotschwanz'

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Family: Hydrangeaceae (hy-drain-jee-AY-see-ee) (Info)
Genus: Hydrangea (hy-DRAIN-juh) (Info)
Species: macrophylla (mak-roh-FIL-uh) (Info)
Cultivar: Rotschwanz
Additional cultivar information: (aka Red Start, Redstart)

» View all varieties of Hydrangeas

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Height:
36-48 in. (90-120 cm)

Spacing:
4-6 ft. (1.2-1.8 m)

Hardiness:
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

Danger:
Parts of plant are poisonous if ingested

Bloom Color:
Red
Scarlet (Dark Red)

Bloom Time:
Mid Summer
Late Summer/Early Fall
Mid Fall

Foliage:
Deciduous

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:
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)

Patent Information:
Non-patented

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

Click thumbnail
to view:

By jbgregg
Thumbnail #1 of Hydrangea macrophylla by jbgregg

By bootandall
Thumbnail #2 of Hydrangea macrophylla by bootandall

Profile:

1 positive
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive lmelling On Dec 8, 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):

This rounded shrub grows to about 4' to 5' and puts on a brilliant autumn display. It has thin branches and the flowerheads are mid-sized to large, red to magenta florets with a distinct white star in the centers when young, and arranged in a single row around the yellowish-pink fertile flowers. Sepals are elongated and entire. Flowering time is from July to August. the form of the flowers, a rare one, is very interesting. This cultivar is considered the best of the Swiss lacecaps. Rotschwanz means "red start." Introduced by Federal Research Institute for Horticulture, Wadenswil, Switzerland, in 1987.

Neutral lupinelover On Jan 21, 2003, lupinelover from Grove City, OH (Zone 6a) wrote:

Color remains very good even in neutral soil.

Regional...

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

,
Baltimore, Maryland



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