Canola seeds are much small than most other crops regularly grown in the dryland production systems in Washington. Canola prefers to be seeded at shallow depths and into good moisture. In the case of winter canola, the combined moisture and depth requirements maybe difficult to achieve as the soil profile begins to dry down over the course of the summer. The small size of canola seeds may also present equipment challenges as not all drills can achieve the low volumes ideal in canola production. There is also a substantial variation in seed size between different varieties of canola. Because of the variation in seed size, canola should be planted on a number of seeds per acre basis rather than a pounds per acre basis.