Arusha and the northern highlands of Tanzania experience a bimodal rainfall pattern, with two rainy seasons. Many crops are planted twice per year. The long "masika" rains from March through May are more reliable in Arusha than in surrounding areas because of the influence of Mt. Meru. The short "vuli" rains are less reliable, usually coming in November and December. The dry "kiangazi" season is June to October. Higher elevation areas north and northeast of the city are home to farmers growing bananas, coffee, cabbage, potatoes, carrots, leafy greens, and other vegetables. Cultivation in areas to the northwest, west, southwest, south, and southeast focuses on maize, beans and wheat. There is a significant horticulture industry, with several companies growing flowers for export to Europe.