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→Cultivation: added section from AHS
==Cultivation==
==Cultivation==
'''Early and mid-season flowering mums''' grow outdoors in sheltered spots. They like full sun, fertile soil, which is moist but drains well, neutral (or slightly acidic) pH, with well rotted manure. Balanced fertilizer should be used on the soil in a top-dressing before planting them, which should only be done after any chance of frost has passed. As it grows, provide support if necessary, tying with soft twine as it grows. Eventual height can vary widely, depending partly on pruning and fertilization. Plants can be stopped at 6-8 inches (15-20cm) to help encourage flowering lateral production. Stopping those laterals again will encourage an even larger number of blooms, although they'll be smaller. If you want exhibition type blooms, only allow the right number of strong flower stems to remain. Gradually remove undesirable buds, as laterals reach 3/4 in (2cm) in length. The timing of all of this depends on how quickly the plant is growing, but a rule of thumb is to stop all of the disbudding/stopping by July 15 in cooler climates and by July 25 in warmer.
Water freely when conditions are dry. Give balanced fertilizer once a week to a week and a half from mid-summer to when the buds start showing color. When flowers are past their prime, cut back their stems to 6-9 inches (15-23cm). In cooler climates, dig up the crowns and store them in a frost-free place, in soilless potting mix. In warmer climates, apply a thick layer of dry mulch before winter, and in early spring cut back the plant. '''Early and mid-season exhibition cultivars''' should be protected from frost and rain. These types are best grown in a cold greenhouse or an open-sided plastic-covered lath house, and the same is true for large-flowered exhibition cultivars.
'''Late flowering exhibition chrysanthemums''', which include the charms, cascades and late flowering sprays all do best in a porous soil-based mix that is slightly acidic, and has added manure. Grow in 3 in. (7.5cm) pots and continually repot into larger sizes until they flower in 9-12 inch (25-30cm) pots, supported with stakes. Do not disbud plants until a week and a half after repotting. Begin growing in a cold frame, then move into warm greenhouse early in the fall, providing adequate air ventilation and always maintaining the temprature above 50F (10C). Water moderately beginning in mid-summer on, and give a balanced fertilizer weekly.
'''Rubellum Group''' and '''annual mums''' should be grown in full sun, in well drained soil which is moderately fertile.
===Propagation===
===Propagation===