⚠ CriticalFiddle Leaf Fig Root Rot — Overwatering in Dense Substrate
Commonly affects: Ficus lyrata (Fiddle Leaf Fig)
The plant droops and wilts despite moist substrate, lower leaves yellow and fall, and a musty smell rises from the pot when watered. The substrate remains wet for more than 10-14 days after watering. Fiddle Leaf Figs have a naturally shallow, spreading root system adapted to the well-drained forest floor of their native West Africa. In dense potting mix without adequate drainage, roots sit in waterlogged conditions and are rapidly colonised by Pythium and Phytophthora water moulds that destroy root tissue.
Potential Causes
- 1Watering on a fixed schedule regardless of substrate moisture content
- 2Dense, peat-heavy substrate with inadequate drainage amendments
- 3Pot size too large relative to root ball — excess substrate volume stays moist long after the root zone has been watered
- 4Low light reducing transpiration rate, causing the plant to use water much more slowly than expected
Solution Steps
- 1Immediately remove from pot and inspect roots. Trim all brown or mushy roots to firm white tissue.
- 2Repot into a smaller pot (if the current one is significantly larger than the root ball) or the same size pot with completely fresh substrate.
- 3Mix: 40% high-quality potting mix, 40% perlite, 20% orchid bark for optimal drainage.
- 4Do not water again until the top 5 cm of substrate is fully dry — this may take 10-14 days.
- 5Move to bright indirect light to support recovery and increase water consumption.
- 6Avoid fertiliser for 8-10 weeks while roots regenerate.
Prevention Tip
Right-sizing the pot is critical for Ficus lyrata — the pot should be only 5-7 cm larger than the root ball diameter. Excess substrate volume is the leading cause of root rot in this species.
