WSU Clark County Extension
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Hollyhock

Scientific name: Alcea rosea
Taxonomy
Family:Malvaceae
Type:Herbaceous perennials
Native:NO
Plant Requirements
Zone:2 to 10
Sun:Full sun
Moisture:Dry
Plant Characteristics
Height:8 ft
Width:2 ft
Bloom:Showy flowers
Bloom Color:Pink
Additional Characteristics
Trees


Fruit

Leaves


Bark
Wildlife value

Poisonous
Description Hollyhocks have long been found in cottage gardens and they are prized for their 4”-5" diameter, single, bell-shaped flowers.

  Morphology:
This is an herbaceous perennial (or short lived biennial) which grows to a height of 6’-8’ and spreads from 1’-2’.

Flowers are produced over the entire summer on tall, rigid spikes or spires which typically reach a height of 5’-8'. Flower color ranges from reds, pinks, whites, and light yellows.

  Adaptation:
Hollyhocks have no particular soil requirements. The do prefer full sun. This plant is effective as a background plant against a building or fence where it is protected from wind

  Pests:
Rust and leaf spot is common, but hasn't a real effect on the flowers. Remove infected leaves when first noticed. This fungus survives on old plant debris so it is important to destroy old plant parts at the end of the growing season. The diseased foliage typically occurs at the base of the plants where it can be masked by shorter growing perennials.
For assistance, contact Dr. Charles Brun (brunc@wsu.edu), (360) 397-6060 5701
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