GardenLine | Porpourri - Miscellaneous | Fasciation

A fasciation is a widespread phenomena reported in more than 100 vascular plant species. The term refers to a flattened or ribbon-like appearance. Woody plants, annuals and even cacti are affected. In some plants fasciations occur on woody stems; other plants exhibit this condition in the flower stalk, roots, fruit or flower clusters.

The cockscomb celosia (Celosia argentea var. cristata) is an excellent example of a plant with inherited fasciation. Other fasciated plants are often identified by the descriptive cultivar names of ‘Torulosa’ and ‘Monstora’.

It is not known if the fasciations in most woody plants are inherited. However, the tendency toward fasciation is transmissible by budding and grafting once the woody plant develops a fasciation. Growers who prune off fasciated branches often find this condition returns with the development of new branches.

Miscellaneous causes: Herbicides, insects and physical injury to the growing tip are reported to stimulate the occurrence of fasciations. Fasciations have also been reported to occur spontaneously. Conditions favoring rapid growth also encourage the development of fasciations.

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Sustainable horticultural information, offered free of charge to the public with the support of the University of Saskatchewan Extension Division, the Department of Plant Sciences and the Provincial Government.