Operational since 1984, Twyford is one of the largest companies that specializes in plant tissue culture throughout the world. The company produces a range of disease-indexed, ornamental, vegetable, fruit and forest starter plants. It serves the international horticultural and agricultural marketplace. The company staffs more than 200 employees who have expertise in the research of over 1,000 new and improved plant varieties. Twyford s plant varieties include calathea, daylily, ficus, orchids and primula. It also produces a range of foliage, including aglaonema, alocasia, alpinia, anthurium and nandina. Additionally, the company has growing and testing facilities in Florida and California. Twyford is operated by Kirin.