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Conium maculatum
Conium maculatum
Conium maculatum
Conium maculatum

Conium maculatum

TAXONOMY

FamilyApiaceae
GenusConium
Zone6

ABOUT

Conium maculatum, commonly known as poison hemlock, is a highly toxic plant native to Europe and North Africa. It has naturalized in many temperate regions around the world. This plant is an annual or biennial in the Apiaceae family and can grow up to 2.5 meters tall. It has a distinctive appearance with purple-spotted stems and finely divided leaves. All parts of the plant are toxic, containing alkaloids such as coniine and gamma-coniceine.

ALSO KNOWN AS

Cicuta Major
Cicuta Officinalis
Coriandrum Cicuta
Poison Hemlock
Conium ceretanum
Conium cicuta
Conium croaticum
Conium leiocarpum
Conium maculatum subsp. croaticum
Conium maculatum subsp. divaricatum
Conium maculatum subsp. leiocarpum
Conium maculatum subsp. viride
Conium maculatum var. barceloi
Conium maculatum var. divaricatum
Conium maculatum var. immaculatum
Conium maculatum var. leiocarpum
Conium maculatum var. viride
Conium maculosum
Conium nodosum
Conium pyrenaicum
Conium sibiricum
Conium strictum
Conium tenuifolium
Coriandrum maculatum
Selinum conium
Sium conium

OVERVIEW

WaterMoist
SoilLoamy
LightDirect Bright (6 Hours)
Temperature15° C
Humidity60%
Dormancy3 Months
pH6.5
Pressure1,013 mbar

DETAILS

Care Instructions
Poison hemlock prefers full sun and moderate temperatures. It thrives in moist, well-drained soil and can tolerate a range of humidity levels. Regular watering is necessary to keep the soil partially moist, but avoid waterlogging. This plant is best suited for outdoor growth due to its size and toxicity.
Soil
Conium maculatum prefers loamy soil that is well-draining. It can tolerate a range of soil pH levels but thrives best in slightly acidic to neutral soil. Ensure the soil remains moist but not waterlogged to support healthy growth.
Fertilizer
Poison hemlock does not have specific fertilizer requirements. It can grow well in moderately fertile soil without additional feeding. If necessary, a balanced, all-purpose fertilizer can be applied sparingly.
Repotting
Repotting is not applicable for Conium maculatum as it is typically grown outdoors and does not require repotting. It is an annual or biennial plant, so it completes its life cycle within one or two years.
Propagation
Poison hemlock is propagated by seeds. Sow the seeds directly into the soil in early spring or fall. Ensure the soil is moist and well-drained. Germination typically occurs within a few weeks under suitable conditions.
Pruning
Pruning is not required for Conium maculatum. However, removing spent flowers can help prevent self-seeding and control the spread of the plant in the garden.
Toxicity
Conium maculatum is highly toxic to both humans and animals. All parts of the plant contain toxic alkaloids, with the highest concentration in the seeds and roots. Ingestion can lead to severe poisoning and even death. It is crucial to handle this plant with care and keep it away from pets and children.
Additional
Due to its high toxicity, it is important to wear gloves and protective clothing when handling Conium maculatum. Ensure that it is planted in an area where it cannot be easily accessed by pets or children. Be aware of its invasive potential and manage its spread responsibly.
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