Overwatering on ficus bonsai
What's Happening
Ficus microcarpa and Ficus retusa bonsai species require consistent soil moisture but are highly sensitive to waterlogging. Their fine, fibrous root systems develop in shallow, well-draining bonsai pots that dry out rapidly. Overwatering causes anaerobic conditions where oxygen levels drop below 2mg/L, triggering root rot pathogens (Pythium, Phytophthora) and suffocating the compact root ball.
How to Fix It
- 1
Check soil moisture with finger test: insert finger 1-2 inches deep—water only when dry
- 2
Water thoroughly until water drains from bottom holes—ensures complete root hydration
- 3
Empty drainage tray within 30 minutes—prevents root reabsorption of stagnant water
- 4
Use chopstick method: insert wooden skewer into soil; if it comes out clean/dry, water is needed
- 5
Reduce watering frequency by 50% in winter when growth slows and evaporation decreases
What You'll Need
How to Prevent It
Water ficus bonsai when the top 1-2 inches of soil feel dry to the touch—typically every 2-3 days in warm, dry indoor conditions. Use a moisture meter for accuracy: water when reading drops to 3-4 on scale. Never allow pot to sit in standing water.