Alcea, Double Hollyhock, Garden Hollyhock 'Chater's Double Yellow'

Alcearosea

Family
Malvaceae (mal-VAY-see-ee)
Genus
Alcea (al-KEE-uh)
Species
rosea (RO-zee-uh)
Synonym
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Herbaceous
Height
6-8 ft. (1.8-2.4 m)
Spacing
24-36 in. (60-90 cm)
Hardiness
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
Pale Yellow
Bright Yellow
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
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
Soil pH requirements
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)
Patent Information
Propagation Methods
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
Direct sow as soon as the ground can be worked
From seed; sow indoors before last frost
From seed; direct sow after last frost
Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds
Properly cleaned, seed can be successfully stored
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Regional

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

Winslow, Illinois

Fort Worth, Texas

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Gardener's Notes:

1
positive
1
neutral
1
negative
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B
Cameron, WI (Zone 3b) | August 2011 | positive

I bought 1-year plants in 2010, and they came back in 2011. They were taller than me, and I'm 5'8"! I only wish I hadn't been on vacation...Read More

A
A
Harwinton, CT | July 2008 | negative

This plant was great the first year, but the second year it developed "rust" and did not look good. If any one has any way to stop the ru...Read More

B
B
Baa
| June 2006 | neutral

Although a perennial plant they are best grown as annuals or biennials due to Hollyhock rust.

Bears large peony like doubl...Read More

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