Humulus lupulus
Ecology
A scrambling, perennial, dioecious climber which is probably native in moist, open woods, fen carr and hedges. It is frequent as an escape from cultivation or as a planted ornamental. Lowland.
Status
Trends
H. lupulus has long been cultivated for flavouring beer; a widespread cultivar was introduced from Flanders in the 16th century for that purpose. It is very difficult to separate possibly native from alien plants; it is certainly alien in Ireland and north of Yorkshire and Lancashire, and many records in S. Britain are relics of cultivation. Mapped as `all records` in the 1962 Atlas, its overall distribution is stable.
World Distribution
Eurosiberian Temperate element; also in E. Asia and N. America and widely naturalised outside its native range.
Broad Habitats
Light (Ellenberg): 6
Moisture (Ellenberg): 7
Reaction (Ellenberg): 7
Nitrogen (Ellenberg): 8
Salt Tolerance (Ellenberg): 0
January Mean Temperature (Celsius): 3.8
July Mean Temperature (Celsius): 15.8
Annual Precipitation (mm): 833
Height (cm): 450
Perennation - primary
Life Form - primary
Woodiness
Clonality - primary
Count of 10km squares in Great Britain: 1273
Count of 10km squares in Ireland: 0
Count of 10km squares in the Channel Isles: 8
Atlas Change Index: -0.09
Weighted Changed Factor: 10
Weighted Change Factor Confidence (90%)
JNCC Designations
Atlas text references
Atlas (182d)
.
1986. Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Jalas & Suominen (1976)
.
1997. The new Oxford Book of Food Plants.