Wood Sorrel (Oxalis) White Spots: Insect or Fungus?

White spots on your 16-year-old wood sorrel could be insects (scale, mealybugs) or fungal spores. The diagnosis depends on texture.

Quick Test

• Raised, wipe off with alcohol? → Insects (scale/mealybugs).
• Flat, powdery, don’t wipe? → Fungal (powdery mildew, etc.).

If Insects

Spray entire plant with rubbing alcohol every other day for 1 week, then every 3 days for 2 weeks, then weekly for 2 months. Monitor closely.

If Fungal

Improve air circulation, reduce humidity, avoid wetting leaves. Apply a fungicide labeled for houseplants.

Next Step

Email a photo to plantlady6@yahoo.com for precise ID. Long-term plants deserve accurate treatment.