Height: 15-90cm (6-36in)
Water depth: 7.5-13cm (3-5in)
Features: foliage, scent
Soil: moist, loamy
The common name – sweet flag -refers to the plant’s flag-like foliage and form, and the sweet cinnamon-like aroma released when theare crushed.
Sweet flag’s upright sword-shaped or rush-likeform a dramatic edge to a ; its tiny , resemhling upright catkins, are insignificant.
Popular species and varieties:
Acorns calamus has dark green, sword-shaped leaves reaching 5§r-<
Acorus calamus ‘Varicgatus’ 60-90cm (2-3ft) high. It should he-planted at a water depth of 7.5-13cm (3-5in). The more striking ‘Variegatus’ has rich green leaves striped with white, tinged rose-pink in spring. It emits a tangerine odour when crushed.
Acorus gramineus (Japanese sweet flag) reaches just 15-30cm (6-12in) high and has narrow evergreen grass-like leaves, edged in creamy yellow in the form ‘Variegatus’. It is slightly less hardy than A. calamus and its flowers rarely appear.
Plant sweet flag in early to mid spring in shallow water or moist loamy soil by theedge. It grows best in sun.
Propagation: Divide clumps in spring and replant.
Pests and diseases: Trouble free.