Alcea, Common Hollyhock, Garden Hollyhock 'Creme De Cassis'

Alcea rosea

Family
Malvaceae (mal-VAY-see-ee)
Genus
Alcea (al-KEE-uh)
Species
rosea (RO-zee-uh)
Synonym
Sun Exposure
Full Sun
Foliage
Herbaceous
Succulent
Height
4-6 ft. (1.2-1.8 m)
Spacing
15-18 in. (38-45 cm)
Hardiness
USDA Zone 2a: to -45.5 °C (-50 °F)
USDA Zone 2b: to -42.7 °C (-45 °F)
USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
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)
Bloom Color
Fuchsia (red-purple)
White/Near White
Bloom Time
Mid Summer
Late Summer/Early Fall
Other Details
Category
Biennials
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Grow outdoors year-round in hardiness zone
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information
Non-patented
Propagation Methods
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; sow indoors before last frost
From seed; direct sow after last frost
Seed Collecting
Allow pods to dry on plant; break open to collect seeds
Regional

This plant is said to grow outdoors in the following regions:

Auburn, Alabama

Toney, Alabama

Hesperia, California

Northridge, California

Santa Ana, California

Ruthven, Iowa

Shepherdsville, Kentucky

Smiths Grove, Kentucky

Sandown, New Hampshire

Mount Laurel, New Jersey

Mesquite, New Mexico

Elba, New York

West Winfield, New York

Cleveland, Ohio

Greenwich, Ohio

Knoxville, Tennessee

Belton, Texas

Amelia Court House, Virginia

Buchanan, Virginia

Kalama, Washington

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Gardener's Notes:

2
positives
2
neutrals
0
negative
Sort By:
Sort By:
L
Ruthven, IA | February 2018 | positive

I ordered 3 of these from Bluestone Perennials and planted them out in late May. They bloomed a bit later than the Indian Spring hollyhoc...Read More

D
D
Smiths Grove, KY (Zone 6b) | February 2008 | neutral

I've grown Creme De Cassis for a few years. I like the flowers, they are quite eye-catching, but the plant overall looks tattered and ca...Read More

B
Braselton, GA (Zone 8a) | March 2007 | neutral

Very tall 6-8' - plant 18" apart. zone 3-9. First year blooming, with double, semi-double and singles on the same stem. Deep wine colored...Read More

O
Southern, NH (Zone 5b) | August 2004 | positive

I started from seed last year, and it bloomed this year.

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