Bigleaf Hydrangea, Lacecap
Hydrangea macrophylla 'Rotschwanz'

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

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

Regional

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

,

Baltimore, Maryland

Gardeners' Notes:

1
positive
1
neutral
0
negatives
RatingContent
Positive

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

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

Color remains very good even in neutral soil.