Projekt LIFE ARTEMIS – Osveščanje, usposabljanje
in ukrepanje za invazivne tujerodne vrste v gozdu

Japanese hop

Humulus japonicus
What is this?
Foto: Chris Evans, University of Illinois,
Foto: Leslie J. Mehrhoff, University of Connecticut,



PATHWAYS: ornamental plant

POSSIBLE TO FIND: year-round


DESCRIPTION: Dioecious annual or, in optimal conditions, perennial climbing plant, which may vigorously grow over other plants. It is a left-handed twining plant (climbing anti-clockwise). Leaves are about as broad as long, palmately divided into 5 to 9 elliptic lobes. Stems, leaves and stipules are covered with stiff hairs. These are most pronounced on the undersides of leaves. Green flowers are borne in upright spikes. The fruiting head is a pendulous cone-like structure, up to 4 cm long, initially green and brown when ripe.

HABITAT: Riparian forests, forest edges, roadsides and ruderal habitats.

STATUS: Occurs locally, especially in parts of Hungary and in Northern Italy. Known from a few localities in Central and Eastern Slovenia. Grown as an ornamental plant in gardens. 

SIMILAR SPECIES: Common hop (Humulus lupulus) is a dioecious, perennial, right-handed twinning plant (climbing clockwise). Leaves palmately compound with 3 to 5 lobes which have a cordate base. The leaf stalk is shorter than the lamina. Virginia creeper (Parthenocissus quinquefolia) is also a climbing plant with palmately compound leaves, but has 5 to 7 stalked leaflets. Its fruits are dark blue berries.

SOURCE: Field Guide to Invasive Alien Species in European Forests

Risbe: Paul Veenvliet
We are using cookies to give you the best experience. You can find out more about which cookies we are using or switch them off in privacy settings.
AcceptPrivacy Settings


  • Piškotki na spletni strani

Piškotki na spletni strani

Na spletni strani uporabljamo piškotke (cookies). Nekateri piškotki zagotovijo, da stran deluje normalno, drugi poskrbijo za vašo lažjo uporabo spletne strani, štetje števila obiskovalcev in delovanje vtičnikov, ki omogočajo deljenje vsebin.
Če boste nadaljevali, bomo sklepali, da ste sprejeli vse piškotke.