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Daylily

Hemerocallis

Also called Day lily and Hemerocallis

Garden plant · Perennials

Every flower lasts one day — the clump keeps opening new ones for weeks. Fatal to cats, and that is not a mild warning.

Care at a glance

Ease
Easy
Water
Every 5 daysWater the ground — water at the base, in the morning, not over the leaves.
Light
Full sun to light shade
Feed
Every 45 days
Humidity
Average
Hardiness
Hardy — a very cold winter RHS H6, to -20°C
Size
0.6 m tall · 0.6 m across
Lifecycle
Perennial
Origin
East Asia

Is it safe for pets and people?

PetsToxic to pets

Affects cats. Signs: vomiting, loss of appetite, lethargy, kidney failure and death.

PeopleNot checked yet

Nobody has checked this one against a source for us yet, so treat it as unknown rather than safe.

Checked against ASPCA and RHS on 2026-08-03.

A guide, not veterinary or medical advice. If a pet or a person has eaten a plant and you are worried, call your vet or doctor now — don’t wait for signs to appear. Spotted a mistake? Tell us.

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