The Eustoma has blue-purple flowers that are beautifully shaped.
Flowers are solitary and terminal, or several in pseudo-racemes, or with inflorescences branched into panicles. Calyx campanulate-five-lobed, white powdered, lobes triangular, or narrowly triangular, sometimes toothed. Corolla large, 1.5-4.0 cm, blue, purple, or white. Capsule globose, or globose-obconic, or obovate, 1-2.5 cm long, about 1 cm in diameter, flowering July-September.
Stems 20-120 cm tall, usually glabrous, occasionally densely covered with short hairs, unbranched, very rarely branched above. Leaves all whorled, partly whorled to all alternate, sessile or with very short stalks, leaf blade ovate, ovate-elliptic to lanceolate, 2-7 cm long, 0.5-3.5 cm wide.
Plant Cultivation Techniques
Eustoma is suitable to grow in the looser soil, especially like slopes and mountains, to half-shade and half-sun terrain is the best, flat cultivation should have good drainage conditions, Eustoma is not suitable for successive crops. Eustoma has a long fleshy root, so it is best to cultivate on the ridge. In early spring, spread farmyard fertilizer to the ground tilling and harrowing fine leveling. When making a ridge, first on the ground every 2 meters on the grid line, open the ditch, and then the ditch soil to the two sides of the sub tease, made into a ridge width of 1.7 meters, the ditch width of about 30 centimeters of the ridge bed.
Platycodon grandiflorum in the field before sowing can mu 2000-3000 kg of farmyard manure, grain compound fertilizer 40 kg, 30 kg of calcium superphosphate, late fertilizer mainly with clear manure or urea, can be in July of that year and the second year in July-August with 25 kg of urea or clear manure for fertilizer to raise seedlings.