The blending imperative
Zimbabwe cannot produce all the wheat it needs at the right quality. Locally grown wheat has lower protein and gluten than the hard wheat varieties grown in temperate climates. For bread flour - which makes up the majority of demand - millers blend approximately 70% local wheat with 30% imported hard wheat from Russia, Canada, and Australia. For biscuit flour, cake flour, and pastry flour, local wheat is sufficient on its own.
Import volumes and costs
Zimbabwe's wheat import bill has been substantial despite growing domestic production, driven by quality requirements rather than volume shortfalls: