Your tree’s own year.
The annual wheel shows only the species in your personal collection and translates warmth into individual care windows.
Nenrin · The living annual ring
A tree counts
no months.
It counts warmth.
Nenrin reads local weather and the biological rhythm of each tree to reveal when repotting, pruning, watering and feeding actually matter.
01 / The method
Time becomes measurable.
Plants develop through accumulated warmth, not calendar pages. Nenrin combines growing degree days, water balance and species-specific thresholds into a calm, readable care system.
02 / One connected system
Observe deeper.
Act at the right moment.
Every tree in one place.
Document trees, pots, substrate and care events in a protected cloud collection available across your signed-in devices.
Species before rules.
Light, dormancy, water and frost tolerance differ. Nenrin explains those differences instead of repeating generic schedules.
Symptoms become clues.
A guided diagnosis connects visible changes with season, location and recent care without pretending certainty.
More than 1,300 years.
An interactive journey follows bonsai from Chinese penjing to contemporary practice through landscapes, people and living trees.
Precise without exposure.
Exact locations remain on your device. The cloud stores only the minimum needed to protect your personal tree record.
年輪 · Nenrin
Not “in March.”
When your tree is ready.
Build a care practice based on observation, climate and the individual life of every tree.