The best strains for California's coastal fog and fall rain Botrytis (bud rot) and powdery mildew are the two biggest threats to outdoor and greenhouse cannabis in California. Choosing mold-resistant genetics is your first line of defense — especially in coastal areas, the Emerald Triangle, and anywhere with fall rain.
Most Mold-Resistant Strains
Our most mold-resistant strain. The sativa-dominant structure creates open bud architecture that promotes airflow and resists moisture buildup. Excellent for Sonoma County fog and coastal grows in Santa Cruz. Extremely vigorous sativa-dominant hybrid with natural disease resistance. The large, airy plant structure handles humidity well. Humboldt and Mendocino growers rely on this one. Hardy genetics that tolerate environmental stress. Good natural resistance to both mold and pests. Pairs 30%+ THC with reliable outdoor performance.
Prevention Tips
Defoliate — remove excess fan leaves for airflow before flower Space plants — minimum 4-6 feet between outdoor plants Harvest before rain — use fast-finishing strains to beat October weather Inspect daily — catch bud rot early before it spreads Light dep — harvest in summer to avoid fall mold season entirely
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