A genus of more than 200 species,just a few of which are used as border plants...Among the late-lowering ones,it is the hybrids that are grown..The name comes from the greek word chryos meaning gold and anthemom meaning flower..Among the late flowering chrysanthemums pinks and reds are dominant..
The autumn flowering types are the C.rubellum and the korean and border chrysanthemums..
How to grow chrysanthemums:
They prefer a well drained,fertile soil in a sunny position...They do well on chalky soil as well..Cut the stems back to ground in early winter...None of the varieties grown as border plants must be disbudded...A mass of small flowers will be better than fewer but larger blooms for a garden display..In the border,plant in blocks of three or five of the same variety...When the plants are about 6 to 10 inches tall,pinch out the growing tip to encourage bushiness...
Although late flowering varieties mentioned are almost hardy and should be all right left in the ground if covered with a layer of peat or pulverised bark for the winter(add a few slug pellets too),they may succumb in damp,wet soil...It is best to left plants about a month after flowering has finished,and overwinter the stools in a cold frame or cold greenhouse...Do not et the soil dry out completely...Avoid too much mosture as well..
Seed can be used but results are likely to be very variable...Cuttings or division will give more predictable results...Cuttings of 2 to 3 inches long basal non-flowering shoots will root readily in a cold frame in early spring...To ensure plenty of early cuttings,pot up and overwinter the stools under cover...Root the cuttings around the edges of small pots,then when rooted pop up singly..Harden off and plant out in late spring..Division in early or mid spring is the best method for C.maximum..
There are several types of late flowering chrysanthemum that make good border plants-the korean hybrids and outdoor spray varieties in particular..