Substrate
Build air and water.A useful mix balances structural stability with the amount of water your climate, pot depth and watering rhythm require.
- Akadama buffers moisture
- Pumice holds air and water
- Lava preserves drainage and structure
生態 · The living archive
Not every small tree belongs indoors.
Species, climate, root space and tools form one system. The atlas separates what your tree biologically needs from what is merely habit.
01 / Climate and species
Twelve trees.
Twelve climates.
“Indoor bonsai” is not a botanical category. What matters is whether a species needs winter dormancy, tolerates frost or requires warmth throughout the year.
02 / Root space and craft
The tree is only half the system.
Pot, substrate and tool choices change oxygen, moisture, temperature and the way a tree responds to every intervention.
Tools
Fewer, sharper, deliberate.A clean pair of shears and the right concave cutter do more than a crowded case of specialist tools.
- Never cut wire with pruning shears
- Disinfect cutting edges between suspect trees
- Choose the tool only after the cut is understood
年輪 · From knowledge to timing