Airborne pollen from fibre hemp travels several kilometres and will seed a nearby CBD crop without anyone noticing until harvest. Seeded flower loses most of its market value, and the isolation distance guidance at https://calmcbdseeds.com (https://calmcbdseeds.com) covers how far apart plantings need to sit. Indoor growers avoid this entirely. Anyone planting outdoors should find out what neighbours are growing before committing to a season.