BugwoodWiki Article

English ivy
Hedera helix L.

Overview

Appearance
Hedera helix is an evergreen perennial climbing vine that attaches to bark of trees, brickwork and other surfaces by root-like structures that exude a glue-like substance to aid in adherence.
Foliage
Leaves are alternate, dark green, waxy, somewhat leathery; extremely variable leaf forms, from unlobed to 3-5 lobed; typically green with whitish veins.
Flowers
Flowering occurs in late summer to early fall, typically under full sun conditions; flowers are small, greenish-yellow and occur in globular starburst type inflorescence at tips of flowering stems.
Fruit
Fruits are black with a fleshy outer layer and stone-like seeds. New plants grow easily from cuttings or stem fragments that make contact with the soil.
Ecological Threat
Hedera helix is an aggressive invader threatening all levels of forested and open areas, growing along the ground as well as into the forest canopy. Vines climb up tree trunks and envelop branches and twigs, blocking sunlight from the host tree’s foliage, impeding photosynthesis. An infested tree will exhibit decline for years before it dies. The weight of vines also makes trees susceptible to blowing over in storms. This plant has been confirmed as a reservoir for bacterial leaf scorch (Xylella fastidiosa), which affects a wide variety of trees.

Resources

Selected Images


5159060
5159060

English ivy
Hedera helix
Flower(s)
Forest and Kim Starr
9005075
9005075

English ivy
Hedera helix
Twig(s)/Shoot(s)
James H. Miller
5159061
5159061

English ivy
Hedera helix
Fruit(s)
Forest and Kim Starr
2307146
2307146

English ivy
Hedera helix
Flower(s)
James H. Miller
9005069
9005069

English ivy
Hedera helix
Fruit(s)
James H. Miller
2307149
2307149

English ivy
Hedera helix
Twig(s)/Shoot(s)
James H. Miller
1237027
1237027

English ivy
Hedera helix
Foliage
Chuck Bargeron
9005071
9005071

English ivy
Hedera helix
Foliage
James H. Miller
1346053
1346053

English ivy
Hedera helix
Infestation
Chris Evans
1346062
1346062

English ivy
Hedera helix
Infestation
Chris Evans
1346064
1346064

English ivy
Hedera helix
Infestation
Chris Evans
5307052
5307052

English ivy
Hedera helix
Seed(s)
Steve Hurst
2125048
2125048

English ivy
Hedera helix
Feature(s)
Chris Evans
2308025
2308025

English ivy
Hedera helix
Infestation
Chuck Bargeron
5162046
5162046

English ivy
Hedera helix
Foliage
Forest and Kim Starr
5344053
5344053

English ivy
Hedera helix
Infestation
Nancy Dagley
5344054
5344054

English ivy
Hedera helix
Infestation
Nancy Dagley

Maps


EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org

EDDMapS Distribution

State Regulated List - This map identifies those states that list this species on their regulated list. For more information, visit Invasive.org

State Regulated List

Invasive Listing Sources

Taxonomic Rank

Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Subclass: Rosidae
Order: Apiales
Family: Araliaceae
Genus: Hedera

Other System Links

Plants: HEHE
Bayer: HEEHE
GRIN: 300252
ITIS: 29393
NPDN Pest: PALACBA
NPDN Host: 34052

Categories

Category: Vines