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Plant guide

Boston ivy.

Parthenocissus tricuspidata

Pronounced par-then-oh-SIS-us try-kuss-pi-DAY-tuh

Also known as Boston ivy, Boston-ivy, Grape ivy, Japanese creeper, Japanese ivy, Japanese-creeper, Japanese-ivy

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Japanese creeper
Photo by Gianni Del Bufalo bygdb (CC BY) via iNaturalist

Boston ivy is a vigorous, deciduous woody vine that is famous for its ability to climb walls with ease. It puts on a spectacular show in autumn when its leaves turn brilliant shades of red and orange. It is a fantastic choice if you want to cover a large fence or masonry wall quickly.

Another photo of Boston ivy
Photo by Sandy Wolkenberg (CC BY) via iNaturalist

At a glance

Care level
Easy
Plant type
Deciduous woody vine
Light
Full sun to partial shade
Indoor light
Bright indirect
Water
Every 7 to 14 days
Mature size
30 to 50 feet
Growth rate
Fast
Hardiness
USDA 4 to 9
Bloom time
Early to mid summer

Care

Plant this vine in a spot where it has plenty of room to spread, as it grows very quickly. Keep an eye on the tendrils to ensure they are not damaging delicate siding or mortar. If the leaves start to yellow, it may be getting too much direct, harsh sun or sitting in soggy soil.

Watering
Water deeply once the top inch of soil feels dry to the touch.
Feeding
Apply a balanced fertilizer once in early spring to support new growth.
Pruning
Prune back in late winter to control size or remove dead stems.
Repotting
If growing in a container, move to a larger pot every few years as it becomes root bound.
Soil
Well draining loam
Soil pH
6.0 to 7.5
Temperature
-25 to 35°C
Humidity
40 to 70%
Drought tolerance
Moderate
Lifespan
Perennial, can live for many decades.
Deer and rabbits
Moderate

Signs it needs repotting

  • Roots growing out of the drainage holes.
  • Water running straight through the pot without soaking in.

Safety

People
The plant contains calcium oxalate crystals which can cause irritation if handled or eaten.
Pets
This plant contains calcium oxalate crystals which can cause irritation if ingested by cats or dogs.
Children
Keep children away from the berries as they are mildly toxic and look tempting to small hands.
Contact allergens
The sap can cause skin irritation or dermatitis in sensitive individuals.
Airborne allergens
The pollen is not considered a significant allergen for most people.
Edibility
The berries are not for human consumption and may cause stomach upset if ingested.

How to identify it

  • Three lobed or simple leaves
  • Glossy green foliage
  • Small adhesive tendril discs
  • Dark blue berries in autumn
  • Vibrant red fall color
Height
9 to 15m
Spread
3 to 6m
Leaves
green, red, purple, deciduous
Flowers
green, yellow, 0.5 to 1cm
Fruit
blue, black, Autumn

Problems to watch for

  • Leaf spot · Fungal spots appear on leaves during humid, wet weather.
  • Scale insects · Small sap sucking insects that can weaken the vine over time.

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Growing it

Propagation
cuttings, seed, layering
When to plant
spring, autumn
Overwintering
No special care is needed as it is fully hardy, but you can prune it back while dormant in late winter.
In containers
It is not ideal for containers due to its massive size and vigorous root system.

Hardwood Cuttings

  1. Take 6 inch cuttings in late winter.
  2. Place in a pot with moist potting soil.
  3. Keep in a cool, bright spot until spring growth appears.

Plant at the base of a sturdy wall or fence to allow the vine to climb naturally.

Grows well with

  • Hydrangea · They share similar light and moisture needs for a lush look.
  • Hosta · Hostas provide a nice textural contrast at the base of the vine.

Similar species

Science

Family
Vitaceae
Genus
Parthenocissus
Order
Vitales
Class
Magnoliopsida
Native range
Eastern Asia, including Japan, Korea, and China.
Conservation
This species is not of conservation concern and is widely naturalized in many regions.

It thrives by scaling vertical surfaces to reach sunlight in forest edges and rocky outcrops.

Value to wildlife
nectar source, nesting cover, winter food for birds
Pollinators
bees, beetles
Uses
vertical gardening, wall covering, erosion control, autumn color

Through the year

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Flowering
Fruiting
Foliage

Ecological indicators

Salinity
2/9
Soil reaction
5/9
Light
6/9
Temperature
5/9
Moisture
5/9
Nutrients
5/9

Taxonomy resolved against GBIF.

Questions people ask

Will it damage my brick walls?
It generally does not harm sound masonry, but it can pull paint off wood or damage loose mortar.
How do I keep it from taking over?
Prune it back hard in late winter to keep it within your desired boundaries.

Where the name comes from

The genus name Parthenocissus comes from the Greek words for virgin and ivy, while tricuspidata refers to the three pointed lobes of the leaves.

Good to know

  • It climbs using tiny adhesive pads rather than twining tendrils.
  • The common name Boston Ivy is a bit of a misnomer as it is native to East Asia.
  • It can grow up to 10 feet in a single season once established.
  • The leaves turn a spectacular shade of fiery red before dropping in winter.

Also in

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This guide was generated with AI on and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.