Crops seeded in early spring may produce taller stalks and higher yields, but will not flower or mature much earlier than later seeded crops. Hemp should not be seeded after June 15. Table of Contents Rotational Considerations Hemp is a broadleaf oilseed and fibre crop. It is susceptible to similar disease and insect pests as other oilseed crops, such as canola, and should be grown in rotation with cereal and forage crops. Tall varieties are better suited to fibre production, while shorter varieties are better suited to grain production.
Plant breeding is underway to develop hemp cultivars adapted to Saskatchewan conditions.
Commercial hemp cultivation licenses are only issued for pedigreed seed of varieties listed in the Health Canada List of Approved Cultivars . The higher seeding rate for fibre is due to the need for many fine stems with a higher percentage of fibre in the stems. Hemp seed is oblong. Care must be taken if seeding is done by an air seeder. The seed is high in oil and if the air is set too high, some of the seeds will be crushed on the divider manifold.