How much sun does Oriental Bittersweet need?

Oriental Bittersweet grows best in part sun conditions.

When does Oriental Bittersweet bloom?

Oriental Bittersweet blooms in May and June.

Is Oriental Bittersweet toxic to livestock?

The USDA PLANTS Database does not flag Oriental Bittersweet as toxic to livestock.

What pollinators does Oriental Bittersweet attract?

Oriental Bittersweet draws bees and beetles.

Is Oriental Bittersweet HOA-friendly?

Oriental Bittersweet takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

Oriental Bittersweet

Name: Pollinator Patch
Author: Pollinator Patch

Celastrus orbiculatus

Last reviewed: August 2026

Toxicity unknown

Oriental Bittersweet (Celastrus orbiculatus) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

The USDA PLANTS Database (opens in new tab) does not flag Oriental Bittersweet as toxic to livestock.

Light

part sun

Water

medium

Size

60"–360" H × 60"–360" W

Bloom

May, Jun

Pollinators

bees, beetles

Native alternatives to Oriental Bittersweet

Oriental Bittersweet is not native to the United States. These natives fill a similar role in a planting, matched on bloom season, bloom color and mature size.

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Oriental bittersweet is a vigorous climbing vine that can reach impressive heights and spreads. It produces small greenish flowers in late spring followed by colorful orange berries in fall that persist into winter.

In an HOA neighborhood

Oriental Bittersweet takes more care to keep looking intentional in a front yard. Maintenance level: high. Consider it for backyard or mid-zone beds rather than the street edge.

Highly invasive species that outcompetes native plants
Can damage structures and trees with aggressive growth
Prohibited or restricted in many areas

Wildlife value

The flowers attract bees and beetles during bloom time. Birds are drawn to the bright orange berries in fall and winter.

Common questions

How much sun does Oriental Bittersweet need?: Oriental Bittersweet grows best in part sun conditions.
When does Oriental Bittersweet bloom?: Oriental Bittersweet blooms in May and June.
Is Oriental Bittersweet toxic to livestock?: The USDA PLANTS Database does not flag Oriental Bittersweet as toxic to livestock.
What pollinators does Oriental Bittersweet attract?: Oriental Bittersweet draws bees and beetles.
Is Oriental Bittersweet HOA-friendly?: Oriental Bittersweet takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

If something looks wrong

Common plant problems, and what to check first

These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.

See all plant problem guides

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