Conium

Description

Conium is a genus of flowering plants in the family Apiaceae, native to Europe, North Africa, and Asia. The genus is known for its tall, hollow stems and delicate foliage, which resemble those of ferns. The plants produce small, white flowers in umbels, which bloom in late spring or early summer. The most well-known species is Conium maculatum, commonly known as poison hemlock, which is highly toxic and can be fatal if ingested.

Taxonomic Information

Domain	Eukarya
Kingdom	Plantae
Phylum	Tracheophyta
Class	Magnoliopsida
Order	Apiales
Family	Apiaceae
Genus	Conium

Appearance

Conium plants typically grow between 3 and 6 feet tall, and have tall, smooth, hollow stems that are light green in color. The leaves are finely divided, feathery, and fern-like, and alternate along the stem. The flowers grow in umbels, which are clusters of small, white petals. The plants have a distinct odor, which some people describe as musty or unpleasant.

Care Guide

Conium plants require well-draining soil and full sun to partial shade. They prefer moist soil, but can tolerate some drought. Fertilize with a balanced, slow-release fertilizer in the spring, and water regularly during the growing season. Conium plants can be grown from seed or by division in the spring or fall.

Hardiness Zones: 3-9

Common Pests & Diseases

Conium plants are relatively pest and disease-free. However, they can be susceptible to aphids, spider mites, and powdery mildew. If infested, treat with an insecticidal soap or neem oil spray. To prevent disease, ensure proper watering and air circulation around the plants.

Habitat

Conium plants are commonly found in meadows, fields, and along roadsides in temperate regions. They prefer moist, well-draining soil and can tolerate a range of pH levels.

Question and Answer

Q: Is Conium maculatum really poisonous?
A: Yes, Conium maculatum, commonly known as poison hemlock, is highly toxic and can be fatal if ingested.

Q: How do I propagate Conium plants?
A: Conium plants can be grown from seed or by division in the spring or fall.

Q: Can Conium plants tolerate drought?
A: Yes, Conium plants can tolerate some drought, but prefer moist soil.

Q: How tall do Conium plants typically grow?
A: Conium plants typically grow between 3 and 6 feet tall.

Related Plants

• Angelica
• Carrot
• Celery
• Coriander
• Dill
• Fennel

References

• “Conium maculatum.” Missouri Botanical Garden, www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=287778.
• “Conium.” Plants of the World Online, www.plantsoftheworldonline.org/taxon/urn:lsid:ipni.org:names:30000763-2.
• “Conium maculatum.” Royal Horticultural Society, www.rhs.org.uk/Plants/21096/Conium-maculatum/Details.