Guides & articles will always be free, but the live “Ask Thumbs” feature is only free during testing. Go Premium today!

Free during early access

Got a sad plant? Just ask Thumbs.

Thumbs is your friendly AI plant buddy! Diagnose problems, learn care, or just browse for fun. No judgment, just help. Click the green icon on the bottom right and choose voice or text, and Thumbs will help!

New here? Start with pothos care — the friendliest plant there is.

We're in beta / pre-release — please excuse any bugs!

What can Thumbs do?

Three ways Thumbs has your back.

Diagnose the problem

Yellow leaves? Drooping? Brown tips? Thumbs walks you to the fix, one question at a time.

Open Plant Doctor

Learn the care

Care guides for every popular houseplant — light, water, soil, and the mistakes to avoid.

Browse care guides

Keep pets safe

Check any plant against ASPCA toxicity data before it comes home to your cats and dogs.

Toxicity checker

Not sure how often to water? Thumbs' free watering calculator does the math for you.

Try it free

Popular care guides

The houseplants everyone's growing — and the care that keeps them happy.

Free plant tool

How often should I water my plant?

Stop guessing and stop killing plants with kindness. Thumbs' watering calculator gives you a personalized schedule based on your plant, its light, the season, and pot size — in seconds.

Try the watering calculator
7
days — your custom interval
Calculate yours →

Leaf Notes from Thumbs

Plant tips, seasonal reminders, and the occasional pun — straight from Thumbs. Free during early access; founding members lock in grandfathered perks.

No spam, just plants. Unsubscribe anytime.