Thanks for the photo — yes, those are definitely insect eggs, and they appear to be lepidopteran (moth or butterfly) eggs, most likely from a caterpillar pest, such as:
Suspected Pest
- Corn earworm (Helicoverpa zea) or cabbage looper types are very common in cannabis.
- The yellow-orange color, oval shape, and tight cluster pattern are classic indicators.
- They were laid directly on the underside of a fan leaf, which is common behavior for caterpillar-type pests.
What To Do Now

Immediate Actions
It’s good to have multi IPM for bugs and mold, but also to gain sucess of resist issues to boosting the plants ISR. it’s good to mix some but also rotate weekly. Always read manual on such and test
- Remove that leaf entirely and destroy it — don’t just wipe it.
- Inspect nearby plants and leaves, especially:
- Undersides of upper and middle leaves
- New growth areas
️ IPM Treatment Recommendation
Spray ASAP (and repeat every 5–7 days if needed):
- Venerate XC – 2–5 Tbsp/gal (insecticidal bacteria; kills eggs and small larvae)
- Suffoil-x @2-5 T per gallon ( suffocation/ low stress / no resistance/flower allowance )
- Grandevo WDG – 3–4 tsp/gal (deterrent + insect growth regulator)
- DES-X – 2% dilution (suffocates soft-bodied insects)
- Optional: Bacillus thuringiensis (Bt-k) if available — highly effective on young caterpillars.
Avoid spraying oils like SuffOil-X during high heat or sun — especially when using microbial products — to prevent plant stress.
Prevention Tips:
- Regularly foliar spray bioinsecticides during early and mid flower (avoid when buds thicken).
- Add Regalia weekly to increase systemic resistance.
- Consider a light UVB zap or sticky cards if adult moths are present.