Hemlock Tree — (c) Joseph Aubert, some rights reserved (CC BY), uploaded by Joseph Aubert
Photo by (c) Joseph Aubert, some rights reserved (CC BY), uploaded by Joseph AubertiNaturalistCC BY
cat safety reference

Is Hemlock Tree safe for cats?

Tsuga species

Hemlock trees are coniferous evergreens often used in landscaping. While they are not considered toxic, ingestion of large amounts of plant material may cause minor digestive discomfort due to the fibrous nature of the needles.

Eastern HemlockHemlockTsugaTsuga species
Light
Partial shade to full sun
Habit
Tree
Care
Low

Safety status

Cats

Generally safe

Consulted references do not classify the plant as toxic for that pet type, while still allowing for mild GI upset if large amounts are chewed.

Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.

What this means for your cat

Cats are not poisoned by ornamental hemlock trees — ASPCA classifies the Tsuga genus as non-toxic to cats. Don't confuse this conifer with poison hemlock (Conium maculatum), which is unrelated and dangerous; Tsuga needles and bark have no toxic principle, so a cat batting at a low branch is not at risk of poisoning.

Sources: ASPCA.

If a pet has chewed or swallowed plant material and is showing symptoms, contact a veterinarian or poison resource immediately. This product is for structured reference, not diagnosis.

Catsconcern notes

Common signs

None expected, though large ingestions of fibrous needles may cause mild vomiting or diarrhea.

Escalation note

Generally considered non-toxic. If your cat consumes a significant amount and shows signs of distress, contact your veterinarian.

Bring it home

Hemlock Treeis generally pet-safe in ordinary household exposure. If you’d like one for your space, here’s a starting point.

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Source evidence

ASPCA Toxic Plant List

toxicology · 99% reliability

Open source

Hemlock (Tsuga species) is listed as non-toxic to cats and dogs.

NC State Extension Plant Toolbox

botanical · 94% reliability

Open source

Tsuga canadensis is a native evergreen conifer known for its ornamental value in landscapes.

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