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How to Grow and Care for Hollyhock Plants

Perennials, Alcea Rosea Malvacae

Here is one of your Grandma's favorite flowers! Hollyhock plants are easy to grow, and will flower the first year, if started early indoors. More often though, they will bloom the second year. You will love the profusion of tall and showy double blooms growing in a wide range of colors include white, yellow, crimson, pink, rose, and red.

Hollyhocks are natives of Asia. They have heart shaped leaves and bloom from July to September in most areas. Tall Hollyhock flowers make great backgrounds, borders, or even fences.

Note: While most hollyhock are perennials, there are some annual varieties.

Hollyhocks attract Hummingbirds.

Plant Height: Varies. Some varieties grow 2'-3', while others grow as high as 6 feet.

Plant Propagation:

Hollyhock are often started from seed. You can sow Hollyhock seeds directly into your flower garden. We recommend that you start them indoors six to eight weeks before the last frost, and they may bloom the first year.

In the garden, they need plenty of room. Final spacing should be 18-24". Give them plenty of room to allow air circulation and minimize rust and other disease.

Established Hollyhock plants can be separated by division. This is best done in the fall to allow the replants time to grow good roots in their new location before winter.

Days to Germination: Varies, 7 - 25, depending upon variety.

How to Grow Hollyhock Plants:

Hollyhock like full sun to partial shade. They will grow quickly to a height of four to five feet or more, depending upon the variety you have selected for your yard.

Hollyhock likes rich, well drained soil. Water as needed to keep the soil moist at all times. Adding a general purpose fertilizer once a month will result in bigger, fuller blooms.

After the growing season is over, Hollyhock should be cut back to ground level. To assure that the plant doesn’t get killed out completely, cover the area with mulch, in case the winter is real harsh.

Flowers Bloom: Summer. A few varieties will bloom well into Fall.

Insect and Disease:

Insects problems are not too common and can be treated with insecticides and insecticidal soaps.

Rust disease is a common problem. We recommend you apply fungicides regularly.


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