Plant library · cosmos
Cosmos
Cosmos bipinnatus
Toxicity unconfirmed
Flowers from midsummer until the first frost if you keep cutting it, and thrives on poor soil — rich ground and generous feeding give you a thicket of foliage and almost no flowers. Deadhead or cut for the vase every few days.
Toxicity
Unconfirmed
No pet-poison database gives a verdict for cats or dogs. Treat it as unknown around pets.
Unconfirmed
No pet-poison database gives a verdict for cats or dogs. Treat it as unknown around pets.
Caution
No pet-poison database gives a verdict for cats or dogs. Treat it as unknown around pets.
Pet-safety information is a general guide from the ASPCA's toxic-plant database and covers cats and dogs only. "If eaten" summarises the symptoms ASPCA lists for that plant; how an animal actually reacts depends on how much it ate and on the animal. It isn't exhaustive, isn't veterinary advice, and individual animals vary — never rely on it as the sole basis for a decision about your pet. If you think your pet has eaten a harmful plant, contact a vet immediately.
Care
- WaterEvery 3–6 days
- LightDirect sun
- HumidityAverage humidity
- Temperature8–28 °C
The same interval the Sabz app schedules reminders from. In autumn and winter the app stretches it; see houseplants in autumn.
Common problems
- Tall, leafy and barely flowering — soil too rich, or too much feed
- Flopping over in the first wind — needs support, or a less sheltered start
- Flowering tails off in August — deadhead relentlessly; seed set stops the display
In the app
Add a cosmos to Sabz and the watering interval above becomes a reminder, the toxicity verdict sits on the plant's own page, and when a leaf turns, the Check-up reads what you have actually logged to say why.
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