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Hollyhock Growing Guide

Header Hollyhock - Garden Express Australia

What is Hollyhock?

Hollyhock (Alcea rosea) is a herbaceous biennial and is a staple of a cottage garden. It is part of the Malvaceae family and is native to the Middle East. Hollyhock have rounded, lobed leaves that grow all along the strong stems. They flower in their second year before setting seed for the next generation of plants. The flowers form in Summer as tall racemes where each individual flower is a large funnel or pompom shape depending on variety. Hollyhock flowers come in two variety’s as either single or doubles. Flower colours range from whites, reds, pinks, crimsons, rose, yellow and white with the added bonus of a very dark purple to black in the single flower. Hollyhocks prefer a full sun position in the garden that is protected from strong winds. They are drought tolerant once established.

Benefits of Growing Hollyhock

Hollyhocks are a traditional favourite in cottage gardens. They make the perfect tall colourful backdrop to a border or bed.  Hollyhocks are quite frost hardy and drought tolerant. They are a magnet for bees and butterflies and are also easy to grow.

How to Grow Hollyhock

Hollyhock Black Pplholbla 2019 - Garden Express Australia

Hollyhock Black

Climatic Zones

Cool, temperate, arid, semi arid.

Plant Size

Normal Height: 1.5-2m, Width: 60cm

Dwarf Height: 60-75cm, Width: 20-30cm

When To Plant Hollyhock

Plant in Late Winter to early Spring. If growing as seed sow in Autumn or Winter.

Soil Preparation

They need moist rich, well drained soil. Mix through compost or well broken down animal manure to your soil before planting.

How To Plant Hollyhock

Plant in full sun, with the plant crown at soil level. Spacing will depend on variety.

Hollyhock Plant Care

Water generously during dry periods and periods of growth. Water at the base of the plant to avoid fungal diseases.

Fertilise with a complete or general fertliser. They are heavy feeders, so feed well.

Remove spent flowers to encourage further blooms. Cut back foliage when plant goes into first year dormancy.

Stake the tall flowers when in a windy position.

Watch out for snails and slugs. They are susceptible to rust. Remove affected leaves.

Recommended Hollyhock Varieties

Bring large hits of colour with this old time favourite.

Hollyhock Spring Celebrities White 16 - Garden Express Australia

Hollyhock Spring Celebrities White

Hollyhock Cerise Pplholcer - Garden Express Australia

Hollyhock Cerise

Hollyhock Spring Celebrity Apricot Pplholsca - Garden Express Australia

Hollyhock Spring Celebrity Apricot