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Lactuca virosa
Lactuca virosa
Lactuca virosa
Lactuca virosa

Lactuca virosa

TAXONOMY

FamilyAsteraceae
GenusLactuca
Zone6

ABOUT

Lactuca virosa, commonly known as wild lettuce, is a biennial plant in the family Asteraceae. It is native to Europe and has been naturalized in North America. The plant is known for its milky sap, which has been used historically for its sedative and pain-relieving properties. It typically grows in disturbed areas such as roadsides and fields.

ALSO KNOWN AS

Bitter Lettuce
Great Lettuce
Opium Lettuce
Wild Lettuce
Lactuca ambigua
Lactuca flavida
Lactuca livida
Lactuca patersonii
Lactuca romana
Lactuca schimperi
Lactuca serratifolia
Lactuca sinuata
Lactuca virosa f. lactucarii
Lactuca virosa subsp. livida
Lactuca virosa var. virosa
Wiestia virosa

OVERVIEW

WaterMoist
SoilLoamy
LightDirect Bright (6 Hours)
Temperature20° C
Humidity60%
GDD1,125
Dormancy3 Months
pH6.5
Pressure1,013 mbar

DETAILS

Care Instructions
Wild lettuce prefers full sun and moderate temperatures. It should be watered regularly but allowed to dry out partially between waterings. The plant thrives in moderate humidity and should be protected from extreme cold.
Harvest
Lactuca virosa, commonly known as wild lettuce, is typically harvested when the plant is in full bloom, which is usually in late summer. The leaves and flowering tops are the primary parts harvested. To harvest, cut the plant at the base and hang it upside down in a well-ventilated, shaded area to dry. Once dried, the leaves and tops can be stored in airtight containers. It is important to wear gloves when handling the plant, as it exudes a milky latex that can cause skin irritation.
Soil
Lactuca virosa prefers well-draining loamy soil with a neutral to slightly acidic pH. The soil should be kept moderately moist but not waterlogged. Good drainage is essential to prevent root rot.
Fertilizer
A balanced fertilizer with an N-P-K ratio of 10-10-10 can be applied during the growing season to support healthy growth. Fertilize every 4-6 weeks for best results.
Repotting
If growing in a container, repot Lactuca virosa when it becomes root-bound or outgrows its pot. Choose a slightly larger pot with good drainage and fresh loamy soil. Repotting is best done in early spring.
Propagation
Wild lettuce can be propagated by seeds. Sow seeds in early spring directly in the garden or in seed trays. Keep the soil moist until germination, which usually occurs within 2-3 weeks.
Pruning
Pruning is generally not required for Lactuca virosa. However, removing dead or damaged leaves can help maintain the plant's appearance and health.
Toxicity
Lactuca virosa is toxic to pets and humans if ingested. The milky sap contains compounds that can cause nausea, vomiting, and dizziness. Handle the plant with care and keep it out of reach of children and pets.
Additional
Wild lettuce has been used historically for its medicinal properties, but it should be used with caution due to its toxicity. Always consult a healthcare professional before using any part of the plant for medicinal purposes.
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How To Grow Lactuca virosa | EarthOne