Silver Streaks? (Thrips Damage)
Thrips scrape leaves leaving silver streaks and black specks (frass).
Thrips on cannabis? Silver streaks/black specks—see causes and analyze fast.
Common Causes
- Thrips infestation
- Bringing clones in
- Open vents/screens
How to Tell Which One You Have
Silvery streaks + tiny black dots; check undersides.
FAQ
How to treat?
IPM: soap + beneficials + airflow; repeat.
Systemic?
Use only safe options per grow stage.
Do they spread virus?
They can; act quickly.