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English Ivy
A popular evergreen groundcover that's actually a serious invasive - it smothers and topples native trees and carpets forests in lifeless 'ivy deserts.' Don't plant it; learn to control it and choose natives.
Safety notes English ivy is mildly toxic and not edible - its berries and leaves contain saponins that cause stomach upset and vomiting if eaten (keep berries from children and pets), and its sap causes an allergic skin rash in many people, so wear gloves when handling or removing it. The bigger problem is ecological: it's an invasive that smothers native plants and trees. Don't plant it; protect your skin when removing it, and never let cuttings root. Choose native groundcovers instead.
Overview
English ivy (Hedera helix) is one of the most widely sold ornamental groundcovers - and one of the most damaging invasive plants where it escapes, which it readily does. This tough, shade-tolerant, evergreen vine carpets the ground and climbs trees, walls, and fences by clinging rootlets, and once loose in the landscape it becomes a serious problem: it smothers and kills native wildflowers and shrubs beneath dense evergreen mats ('ivy deserts'), and it climbs and eventually topples and kills mature trees by weighing them down and shading their leaves.
Because it's so common in gardens (and still sold), many people don't realize English ivy is a listed invasive across much of North America - notably the Pacific Northwest and Southeast - and even banned or restricted in some areas. This entry is here to help you identify and control it, understand why not to plant it, and choose better alternatives. It's also mildly toxic (berries and leaves) and a skin irritant, so it's a plant to handle with care as well as to keep out of the wild.
Quick facts
For identification. Not a growing guide.
- Height
- 360 inRange: 6–1080 in
- Spread
- 240 inRange: 24–1200 in
- Cold
- Takes hard frostdamaged below -20°F
- Heat
- Struggles above 95°F
- Life cycle
- Perennial, lives about 40 years
- Self-sows
- Yes. Never let it set seed.
- Habitat
- Part sun · Part shade · Shade, well-drained soil
Through the year
A field guide through time
Explore the stages to recognize this plant throughout its life.
Stage 1 of 2 · The recurring year
Evergreen creeping/climbing growth (identify & control)
year-round, every year
Know this stage
-
Recognize the two leaf forms
English ivy is an evergreen vine with glossy, dark green, usually 3-5-lobed leaves in its juvenile creeping/climbing stage. It carpets the ground and climbs trees and walls by clinging rootlets. Where it climbs into good light and matures, the leaves become unlobed (oval) and it flowers - so juvenile lobed leaves and adult oval leaves can appear on the same plant.
-
Cut it off trees and pull the groundcover
To control it, cut the climbing vines at the base (and again a few feet up, removing the section) to save the tree - don't rip the vines down and damage the bark; the upper growth dies. On the ground, pull or dig the mats (it roots as it goes). Wear gloves - the sap irritates skin. Bag the material; don't let cuttings re-root.
Months are typical seasonal windows; climate, variety, and plant age can shift them.
Hazards
Smothering & Killing Trees / UnderstorySeverity High DisordernowSeason: year-roundIvy thickening on tree trunks and into canopies, and dense evergreen ground mats replacing native understory.
Ivy thickening on tree trunks and into canopies, and dense evergreen ground mats replacing native understory.
Cut vines at the base to save trees, pull/dig ground mats, prioritize removing fruiting ivy to stop seed spread, and follow up persistently.
Never plant it; cut climbing vines off trees early; remove ground mats and replant with natives.
The core hazard is ecological: English ivy climbs and weighs down trees (toppling and killing them) and carpets the ground in dense evergreen mats that smother native wildflowers and shrubs, degrading habitat into 'ivy deserts.'
Toxic Berries & Irritant SapSeverity Medium DisordernowSeason: year-roundChildren or pets near the black berries; skin rash after handling or removing ivy bare-handed.
Children or pets near the black berries; skin rash after handling or removing ivy bare-handed.
For ingestion, contact poison control; for skin contact, wash the area and treat the rash as contact dermatitis.
Keep berries away from children and pets; wear gloves and cover skin when handling or removing it.
A direct hazard to people and pets: the berries and leaves are mildly toxic (saponins) and cause vomiting and stomach upset if eaten, and the sap causes an allergic skin rash in many people.
Grower tips
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