Plant guide:🎸 Fiddle Leaf Fig
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Fiddle Leaf Fig brown spots from root rot — Ficus lyrata disease diagnosis
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Roots

Fiddle Leaf Fig Brown Spots from Root Rot — Dark Blotches Spreading from Leaf Base

Commonly affects: Ficus lyrata (Fiddle Leaf Fig)

Large, irregular dark-brown to rust-coloured spots appear on the lower leaves first, typically spreading from the base or edges of the leaf inward. The spots have a water-soaked appearance initially before turning dry and papery. Multiple leaves on the lower portion of the plant are affected simultaneously. This is the most common and most destructive Ficus lyrata problem: root rot from overwatering. The spots appear on leaves because the damaged root system can no longer supply adequate water and nutrients, and Phytophthora-produced toxins travel upward in the vascular system.

Potential Causes

  1. 1Overwatering — the leading cause; Ficus lyrata has low water requirements and is frequently overwatered
  2. 2Pots without drainage or with blocked drainage holes keeping roots in standing water
  3. 3Heavy substrate without adequate drainage amendment retaining moisture far too long
  4. 4Low light conditions reducing the plant's metabolic rate and water consumption, leading to overwatering even on a normal schedule

Solution Steps

  1. 1Immediately stop watering. Allow the substrate to dry completely before the next irrigation.
  2. 2Remove the plant from its pot and inspect the roots. Trim all brown, mushy roots back to white, firm tissue using sterile scissors.
  3. 3Repot into a fast-draining substrate: 50% potting mix, 30% perlite, 20% bark chips. Use a pot only slightly larger than the root ball to avoid excess substrate holding moisture.
  4. 4Ensure the new pot has adequate drainage holes.
  5. 5Remove all severely spotted leaves — they will not recover and act as potential infection sites.
  6. 6Place in bright indirect light and withhold fertiliser for 6-8 weeks while the root system recovers.

Prevention Tip

Water Ficus lyrata only when the top 5 cm of substrate is completely dry, and reduce to half that frequency in winter. A moisture meter is extremely useful for managing this notoriously overwatered species.

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