Assess Light, Humidity, and Temperature
30 minutesMeasure ambient humidity and light hours; identify best window or supplemental lighting location.
Field context
This workflow is part of 4 niche fields
Complete guide for indoor bonsai care — step-by-step workflow, tools, checklist, and expert tips to get started.
Measure ambient humidity and light hours; identify best window or supplemental lighting location.
Size humidity trays with gravel and water below pot base; group trees to share microclimate.
Mount full-spectrum LED at calculated height; set 12–16 h photoperiod timer.
Water when topsoil dries; fertilize at half strength during growing season only.
Calculate humidity tray dimensions to raise ambient moisture around indoor bonsai.
Determine optimal LED grow light distance from canopy to prevent burn and ensure adequate PAR.
Set watering frequency based on pot size, soil mix, and indoor humidity levels.
Dilute fertilizer to half strength for containerized indoor trees.
Light and humidity needs for common indoor bonsai.
| Species | Light Hours | Humidity % | Min Temp (°C) |
|---|---|---|---|
| Ficus | 12–16 h | 50–60 | 15 |
| Carmona (Fukien tea) | 10–14 h | 60–70 | 18 |
| Serissa | 10–14 h | 55–65 | 15 |
| Chinese elm | 10–14 h | 45–55 | 10 |
Move indoor trees outside in summer shade — one season outdoors dramatically improves vigor.
Sudden leaf drop usually means overwatering, draft, or light change — diagnose before treating.
Grow lights and humidity trays near water require GFCI outlets — extension cords in wet areas are hazardous.