Contents
Description
Arum is a genus of flowering plants that belongs to the family Araceae. It is native to Europe, Asia, and North Africa. The genus comprises approximately 25 species of herbaceous perennial plants that grow from a tuber. Arum plants are highly ornamental and are grown for their attractive foliage and unique flowers.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Monocotyledonae |
| Order | Alismatales |
| Family | Araceae |
| Genus | Arum |
Appearance
Arum plants have large, arrow-shaped leaves that are deep green in color. The leaves grow from a central stem that emerges from the tuber. The flowers of Arum plants are highly unique and are composed of a spadix (a fleshy spike) that is surrounded by a spathe (a modified leaf). The spathe is usually a pale green or white color on the outside, and a deep purple on the inside. The spadix is usually yellow or green in color, and is covered in small, male and female flowers.
Care Guide
Arum plants are relatively easy to care for, and can be grown indoors or outdoors. Here are some tips for caring for Arum plants:
- Water: Arum plants prefer to be kept consistently moist, but not waterlogged. Water the plant when the top inch of soil is dry.
- Fertilization: Arum plants do not require fertilization, but can benefit from a monthly feeding with a balanced fertilizer during the growing season.
- Soil: Arum plants prefer well-draining soil that is rich in organic matter, such as compost or peat moss.
- Sunlight: Arum plants prefer bright, indirect light, but can tolerate some shade. Avoid direct sunlight, as it can scorch the leaves.
- Hardiness Zones: Arum plants are hardy in USDA zones 6-9.
Common Pests & Diseases
Arum plants are relatively pest and disease resistant, but can sometimes be affected by the following:
- Spider mites: These tiny pests can cause yellowing leaves and webbing on the plant. Treat with insecticidal soap.
- Leaf spot: This fungal disease can cause brown spots on the leaves. Remove infected leaves and treat with a fungicide.
- Root rot: This disease is caused by overwatering or poorly-draining soil. Treat by improving soil drainage and reducing watering frequency.
Habitat
Arum plants are native to Europe, Asia, and North Africa. They can be found growing in a variety of habitats, including woodlands, meadows, and along stream banks. Arum plants prefer moist, well-draining soil and partial shade.
Question and Answer
Q: Are Arum plants toxic?
A: Yes, Arum plants are toxic if ingested. They contain calcium oxalate crystals that can cause irritation of the mouth and throat.
Q: How often should I water my Arum plant?
A: Arum plants prefer to be kept consistently moist, but not waterlogged. Water the plant when the top inch of soil is dry.
Q: Can I grow Arum plants indoors?
A: Yes, Arum plants can be grown indoors in a bright, indirect light. Avoid placing them in direct sunlight, as it can scorch the leaves.
Q: How do I propagate Arum plants?
A: Arum plants can be propagated by dividing the tuber in the spring. Make sure each division has at least one stem and a portion of the tuber.
Related Plants
- Calla lily (Zantedeschia)
- Cobra lily (Arisaema)
- Jack-in-the-pulpit (Arisaema triphyllum)
References
- Gardening Know How. (2022). Arum Plant Care: Growing Arum Plants In The Garden. Retrieved from https://www.gardeningknowhow.com/ornamental/bulbs/arum/arum-plant-care.htm
- RHS. (n.d.). Arum italicum. Retrieved from https://www.rhs.org.uk/Plants/8841/Arum-italicum/Details
- University of Illinois Extension. (n.d.). Arum. Retrieved from https://extension.illinois.edu/perennial/Arum.cfm
