Brussels Sprouts are native to Belgium and considered a European delicacy. They are well-known for their remarkable frost tolerance, making them an ideal crop for Canadian gardeners. Growing Tips: Brussels Sprouts grow best in a rich well-worked ground that has a soil pH above 6.0. This easy-to-grow crop may be started indoors, as described above for broccoli or sown directly in the garden. Brussels Sprouts require copious amounts of water and should be mulched during the hot summer months to conserve soil moisture. Allow a light frost before harvesting to improve flavor and pick sprouts from bottom of stem up.