Position – Full sun or part shade
Soil – Moist, well-drained
Flowering Period – Spring and summer
Hardiness – Half hardy
Dietes are rhizomatous perennials that form stunning bunches of sword-shaped foliage that creates year-long interest. During the summer months, long slender stems bear a profusion of iris-like flowers. Although these are short lived, they make an attractive statement in flower beds and borders and will make a great addition to a courtyard or informal garden setting. They are low maintenance plants that will grow to an approximate height and spread of 1m (40”).
Dietes are best planted during the spring within moist, well-drained soil of sand, chalk and loam in a neutral, alkaline or acidic PH balance. At the time of planting, these flowers should be fed with a liquid fertiliser which should be continued monthly to encourage optimum health and development. They are best positioned in an area of full sun although they will thrive in partially shaded areas.
Dietes will require a regular watering regime which should be fulfilled in the morning to prevent disease. Ensure that you never overwater your plant as this will cause the roots to rot. In periods of prolonged dry and hot weather, it is recommended to apply a layer of mulch to retain moisture levels. You may wish to cut back taller plants to encourage strong new growth or deadhead faded flowers to stimulate further growth for the following flowering period. At the end of the season give your plants a general tidy up by removing old or dead foliage, keeping the area neat to reduce the chances of disease.
It is possible to propagate Dietes by seed or by leaf cuttings taken from new growth.
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