Production is mostly in East Mashonaland and Manicaland, on the same latitude as much of bolivia and southern brazil. The temperate climate averages eight hours of daily sunshine and mean annual temperatures are just under 19 °C/66 °F. Summer rain falls from November to April, but drought is a constant threat. Uneven budding and rot are annual hazards in the long, hot, humid summers, and the grapes can be affected by dilution and hail . The better vineyard areas lie at an elevation of about 1,500 m/4,920 ft. Shortcomings in the vineyard are frequently addressed by acidification and sometimes enrichment (Zimbabwe has no official labelling or wine-production regulations). Chenin Blanc, Colombard, Sauvignon Blanc, Chardonnay, and Crouchen vines produce dry and off-dry whites, with Pinotage, Merlot, Shiraz, and Cabernet Sauvignon planted for reds.