How do I grow star fruit (carambola) and which climate and soil suit it?

Star fruit, also called carambola or kamrakh, is a tropical to subtropical tree that grows well in warm, humid, frost-free areas with good rainfall or irrigation, suiting Kerala, coastal and southern regions and other warm parts of India. It likes deep, well-drained soil and is sensitive to frost, strong winds and waterlogging. Grafted plants of selected sweet types are far better for the market than chance seedlings, which can be sour. The tree bears within a few years and can give fruit in more than one flush a year in warm climates. It is mostly grown on a small scale and in homesteads, with sweet types having more fresh-market value. Confirm the recommended sweet variety and a genuine grafted plant source for Thrissur with your KVK or the horticulture department.