White Growth on Red Tip Ligustrum Roots: Fungus or Harmless?

A 20-year-old red tip ligustrum (likely Ligustrum japonicum ‘Rotundifolium’) has thick white growth on exposed roots and up the trunk. The expert says this may be a mushroom or fungus on dead root tissue. If the plant looks healthy otherwise, it’s likely not a serious threat.

What to Do

• Hand-removal is temporary; the growth will return.
• If the canopy is full and green, ignore it.
• Maintain good watering and fertilization.
• Monitor for canopy thinning or dieback, which would indicate root rot.

Many saprophytic fungi colonize dead wood without harming the living tree. Only act if the tree shows decline.