Canola can lose flowers to many stresses, including insects, heat, heavy rain, and late herbicide application. Canola plants that lose flowers can recover without a yield penalty — or not much of one — if conditions improve by early to mid flower. The chart above shows that canola plants produce far more flowers than pods, providing a cushion to compensate for flower loss early. The plant can utilize the later flowers if needed. If not needed, these late flowers won’t likely amount to much.