Teacher training colleges, technical colleges and technikons are also available in Gauteng, as well as major academic hospitals. Agriculture and industry Gauteng's agricultural sector is geared to provide the city and towns of the province with fresh daily produce. This includes dairy products, vegetables, fruit, meat, broiler chickens, eggs and flowers. The districts of Bronkhorstspruit, Cullinan and Heidelberg are important agricultural land, which produce ground nuts, sunflowers, cotton and sorghum. This summer rainfall area enjoys hot summers and cold winters with frost.
Hail is common during the summer thunderstorms.
Snowfalls rarely occur. Gauteng is an integrated industrial complex with major areas of economic activity in five sub-regional areas, namely the Vaal Triangle, the East, West and Central Rand, and Pretoria. The Pretoria sub-regional economy is dominated by government services, transport and related industries. All these sectors rely heavily on the Vaal Dam on the Vaal River, from whence water is piped across the province. The literacy rate of Gauteng is the second highest in the country.