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PlantFiles: Japanese Hops
Humulus japonicus

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Family: Cannabaceae
Genus: Humulus (HUM-uh-lus) (Info)
Species: japonicus (juh-PON-ih-kus) (Info)

3 members have or want this plant for trade.

Category:
Annuals
Vines and Climbers

Height:
6-8 ft. (1.8-2.4 m)

Spacing:
Unknown - Tell us

Hardiness:
Unknown - Tell us

Sun Exposure:
Unknown - Tell us

Danger:
Handling plant may cause skin irritation or allergic reaction
Plant has spines or sharp edges; use extreme caution when handling

Bloom Color:
Green

Bloom Time:
Mid Summer
Late Summer/Early Fall
Mid Fall

Foliage:
Unknown - Tell us

Other details:
May be a noxious weed or invasive

Soil pH requirements:
Unknown - Tell us

Patent Information:
Non-patented

Propagation Methods:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us

Click thumbnail
to view:

By creekwalker
Thumbnail #1 of Humulus japonicus by creekwalker

By shellimac
Thumbnail #2 of Humulus japonicus by shellimac

Profile:

No positives
No neutrals
2 negatives

Gardeners' Notes:

RatingAuthorContent
Negative coriaceous On Feb 21, 2014, coriaceous from ROSLINDALE, MA wrote:

Two states have banned the trade, transport, or planting of this species due to its invasiveness.

Negative creekwalker On Jan 10, 2009, creekwalker from Benton County, MO (Zone 5a) wrote:

This plant is an alien and can be invasive. I particularly do not like this plant due to the firey red welts it causes on my skin from a mere brush against it. It has bristles on the leaves and stems that "grab" ahold of you.

Here is a web site with more information on this plant.
http://dnr.wi.gov/news/Weekly/Article_Lookup.asp?id=2663

Regional...

This plant has been said to grow in the following regions:

Cole Camp, Missouri
Sedalia, Missouri
Puyallup, Washington



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