Your bonsai. Through every season.

Keep your collection close, make time for each tree and follow its progress over the years. Niwa brings your bonsai journal, care schedule and photos together, with local weather alerts available with Premium.

YOUR BONSAI, ALWAYS WITH YOU
Keep your collection in one place, with a profile for every tree. Record its species, style, substrate and wintering setup, with 783 species and 24 bonsai styles to choose from.

EVERY TREE HAS A STORY
Log watering, pruning, fertilizing, wiring, repotting and treatments. Every entry is dated and stays in your tree's history, alongside its photos and details.

CARE TODAY. PLAN AHEAD.
See your tasks in the weekly view and plan ahead with the monthly calendar. Schedule recurring care once and receive reminders the evening before, then again the same morning. If a morning watering task is still unchecked, Niwa reminds you again at 1 pm.

SEE HOW FAR THEY'VE GROWN
Build a photo history, one image at a time. Compare an earlier photo with a recent one using the comparison slider, with dates and elapsed time displayed. Keep a record of the changes that are easy to miss from day to day.

WEATHER ALERTS, WHERE YOU GROW
Premium monitors the local forecast for frost, temperatures above 91°F, hail, thunderstorms and strong winds. Alerts arrive the evening before and again the same morning, helping you plan watering or move a pot to shelter.

Niwa takes wintering into account: bonsai marked as indoors do not trigger weather alerts.

IN TUNE WITH THE SEASONS
Choose light mode, dark mode or your phone's system setting. Niwa's accent colors change automatically with the seasons, from winter blue to autumn orange.

FREE AND PREMIUM
The free plan includes up to 3 bonsai and 10 photos per tree.

Premium removes both limits and unlocks weather alerts. A 14-day trial is available, with no credit card required. It ends automatically, and you choose whether to continue.

YOUR COLLECTION, YOUR DATA
No ads. No tracking, analytics or attribution tools. Your data is never sold, is hosted in the European Union and can be exported at any time in a readable file.

MADE FROM A REAL COLLECTION
Niwa is built by one person in Lyon, France. It grew out of a real bonsai collection and the wish to stop discovering damage after a weekend away.

Available in English, French, Spanish and German. Choose metric or imperial units, including Celsius or Fahrenheit.