Contents
Description
Alcea, commonly known as hollyhocks, is a genus of approximately 60 species of flowering plants in the mallow family (Malvaceae). They are native to Asia and Europe, but can be found in different parts of the world. Hollyhocks are biennials or short-lived perennials that are grown for their stunning flowers.
Taxonomic Information
| Domain | Eukaryota |
|---|---|
| Kingdom | Plantae |
| Phylum | Tracheophyta |
| Class | Magnoliopsida |
| Order | Malvales |
| Family | Malvaceae |
| Genus | Alcea |
Appearance
Hollyhocks have tall, sturdy stems that can reach up to 8 feet in height. The leaves are large, heart-shaped, and hairy. The flowers are large, showy, and come in a wide range of colors, including pink, red, yellow, white, and purple. They have a distinctive central column of stamens that gives the flower a unique appearance.
Care Guide
Water
Hollyhocks prefer moist soil, so it’s important to water them regularly. However, be careful not to overwater them, as this can lead to root rot.
Fertilization
Hollyhocks benefit from regular fertilization, especially during the growing season. Use a balanced fertilizer that is rich in nitrogen, phosphorus, and potassium.
Soil
Hollyhocks prefer well-draining soil that is rich in organic matter. They can grow in a variety of soil types, but prefer slightly acidic soil.
Sunlight
Hollyhocks require full sun to thrive. They can tolerate some shade, but will not flower as well in shady areas.
Hardiness Zones
Hollyhocks are hardy in USDA zones 3-8.
Common Pests & Diseases
Hollyhocks are susceptible to a variety of pests and diseases, including aphids, spider mites, rust, and powdery mildew. To prevent these issues, make sure to keep your plants healthy and well-watered, and inspect them regularly for signs of infestation.
Habitat
Hollyhocks are native to Asia and Europe, but have been introduced to other parts of the world. They can be found in a variety of habitats, including meadows, fields, and gardens.
Question and Answer
Q: How do I propagate hollyhocks?
A: Hollyhocks can be propagated by seed or by division. To propagate by seed, collect the seed pods after the flowers have faded and dry them out. Sow the seeds in the fall or early spring. To propagate by division, dig up the plant and gently separate the roots into smaller sections. Replant the sections in well-draining soil.
Q: How often should I fertilize my hollyhocks?
A: Hollyhocks benefit from regular fertilization during the growing season. Fertilize them every 4-6 weeks with a balanced fertilizer that is rich in nitrogen, phosphorus, and potassium.
Q: Can hollyhocks tolerate drought?
A: Hollyhocks prefer moist soil, but can tolerate some drought. However, prolonged periods of drought can lead to stunted growth and reduced flowering.
Q: Do hollyhocks attract bees?
A: Yes, hollyhocks are attractive to bees and other pollinators.
Related Plants
Here are some related plants to Alcea:
- Malva
- Lavatera
- Abutilon
- Hibiscus
References
- “Alcea.” Missouri Botanical Garden. Accessed 25 Aug. 2021. <http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=252814&isprofile=0&=  
