Bonsai Plum Plossom(Mei Hua) – Orange Frass at the Base? It’s Likely Termites – Quick Guide

A few days ago I noticed a small pile of orange, fine, sawdust-like particles right at the base of my potted Mei Hua (Japanese apricot / Prunus mume). I brushed it away… and two days later, a fresh pile appeared in almost the same spot.

After checking photos and comparing with common pest signs, this is almost certainly termite frass—most likely drywood termite droppings or frass from a nearby drywood termite infestation.

What Is Termite Frass and What Does It Look Like?

Termite frass is the pellet-like waste termites produce after they consume wood. It is often described as sawdust-like debris, but true drywood termite frass usually looks more uniform than ordinary dust or potting mix.

In many cases, what termite frass looks like is easy to spot once you know how to identify it:

• Fine, uniform orange-tan or dark brown pellets
• Often six-sided or with six concave sides under magnification
• Dry, consistent debris that may collect in small piles
• Sometimes found in or around small kick-out holes where termites push frass out of the wood

Key signs that point to termites:

• Repeated appearance after cleaning
• Location focused around the trunk base and root flare
• No large holes or obvious bark damage, which can happen in early drywood termite infestations
  
  

How to Identify It: Drywood Termites vs. Other Debris

Drywood termites produce frass after feeding inside the wood, while subterranean termites usually leave different signs, such as mud tubes and damp damage. If you see pellets instead of mud, the debris is more consistent with drywood termite frass.

Check whether the material is inside the wood structure or simply on the soil surface. Frass that keeps returning in the same spot is a stronger clue of active termite activity than random dust or spilled soil.

Other things to look for include termite galleries, tiny small holes, and wood that sounds hollow when tapped. These signs can help show the extent of the infestation.

Quick Confirmation Steps for a Termite Inspection

1. Gently scrape away surface soil around the root neck and look for tiny exit holes (1–2 mm) or mud tubes.
2. Check if the wood at the base feels soft or sounds hollow when tapped lightly.
3. Inspect at night with a flashlight — termites are more active after dark.
4. If possible, watch for additional frass appearing within a day or two after cleaning.

What to Do Right Away

Termite Control: What to Do Right Away

1. Isolate the pot — move it away from other plants onto a hard surface.
2. Clean the visible frass with a brush or vacuum (don’t blow it around).
3. Apply bait — place termite bait stations (Advance, Sentricon, or similar) near the base. Workers carry the active ingredient back to the colony.
4. Soil drench (if needed) — use a labeled imidacloprid or fipronil-based product (diluted properly) as a root-zone treatment.
5. Worst case — if the trunk is heavily damaged, consider bare-rooting, washing roots, pruning affected parts, and repotting in fresh soil.

Prevention Tips

• Keep soil on the drier side — termites love constant moisture.
• Elevate pots off the ground.
• Inspect trunk base and soil surface every few months.
• Schedule a professional termite inspection or free inspection if you suspect a larger drywood termite infestation.

Early action usually saves the tree. I’ve started baiting mine — fingers crossed.

Have you seen similar orange frass on your bonsai or potted trees? Drop a comment below.