Sweet Alyssum — (c) Steve Matson, some rights reserved (CC BY), uploaded by Steve Matson
Photo by (c) Steve Matson, some rights reserved (CC BY), uploaded by Steve MatsoniNaturalistCC BY
cat safety reference

Is Sweet Alyssum safe for cats?

Alyssum spp.

Alyssum is a popular, fragrant flowering plant often used in garden beds and containers. It is considered non-toxic to pets, though ingestion of large amounts of plant material may cause mild digestive upset.

Alyssum spp.Lobularia maritimaSweet Alyssum
Light
Full sun to partial shade
Habit
Low-growing, spreading
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

Sweet Alyssum is non-toxic to cats per ASPCA — there is no listed toxic principle, so a curious sniff or chew does not pose a poisoning risk.

Sources: ASPCA (no first-aid guidance; non-toxic listing).

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 may cause mild vomiting or diarrhea due to fiber content.

Escalation note

Generally considered safe. If your cat consumes a large quantity and shows persistent signs of distress, contact your veterinarian.

Bring it home

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

Shop on Amazon

Some links earn us a small commission. They never affect our safety classifications.

Source evidence

ASPCA Toxic Plant List

toxicology · 99% reliability

Open source

Alyssum is listed as non-toxic to cats and dogs.

NC State Extension Plant Toolbox

botanical · 94% reliability

Open source

Lobularia maritima is a low-growing, fragrant annual often used as a groundcover or in hanging baskets.

Cats & dogs pagedogs page

Questions about Sweet Alyssum

Is Sweet Alyssum toxic to cats?

Sweet Alyssum (Alyssum spp.) is considered non-toxic to cats. It is classified as generally safe, meaning it is not expected to cause poisoning or serious harm if your cat nibbles on it.

What happens if my cat eats Sweet Alyssum?

Most cats will show no symptoms at all. If your cat eats a large amount, the fiber content of the plant material may cause mild vomiting or diarrhea, but this is typically self-limiting and not a sign of poisoning.

How much Sweet Alyssum would cause a problem for my cat?

Small amounts are not expected to cause any issue. Problems, if they occur at all, are limited to mild digestive upset from eating a large quantity of plant material — not from any toxic compounds in the plant itself.

My cat ate Sweet Alyssum from my garden — should I be worried?

There is no need to panic; Sweet Alyssum is non-toxic to cats. Monitor your cat for mild GI signs like vomiting or loose stool if it ate a large amount, and contact your veterinarian if symptoms are persistent or your cat seems distressed.

Same cat verdict

Related plants for cats