Powdery mildew shows up on sativa mothers and long vegged plants far more often than in short cycles, because a crowded, leafy plant sitting in one place for months is exactly what the spores want. White dusty patches on the lower leaves are the early sign, and once it reaches flower there is no clean fix. The prevention routine on https://hazesativaseeds.com is mostly about airflow, spacing and a monthly potassium bicarbonate spray during veg. Catching it on the mother saves every clone taken from her.