Production of the Australian native daisies (Helipterum roseum and Helichrysum bracteatum) for the cut flower market

Abstract

Cut flower production of 2 Australian native daisies, Helipterum roseum and Helichrysum bracteatum, was investigated in the glasshouse and outdoors at 4 planting times. Both species exhibited a long day response with floral initiation occurring in any photoperiod but with peak production following longer days. Peaks in bloom production occurred during the spring and summer regardless of planting time. Floral abnormalities were observed in Helipterum roseum in all environments and planting times with the exception of the outdoor winter planting. There was a tendency for inflorescence diameter of both species and stem length of Helipterum roseum to decline with time from anthesis of the apical inflorescence. Optimum production of top quality blooms of Helipterum roseum extended from October to January following planting between autumn and spring. Peak production of Helichrysum bracteatum between December and March can be expected following planting during winter and spring. It may be possible to extend these seasons by weekly planting from autumn to spring. In addition, the imposition of extended photoperiod or night break treatments following summer or autumn planting may fulfil the photoperiod requirements of the plants and stimulate increased production between March and November. It is proposed that both species be considered for the fresh cut flower market, with Helipterum roseum marketed as single stems and Helichrysum bracteatum as sprays.

Study of PEG-6000 effect on growth and physiological parameters of China aster (Callistephus chinensis) and strawflower (Helichrysum bracteatum) in in vivo conditions

“…The use of PEG allows to recreate the necessary osmotic potential i.e. the to simulate soil drought [18,19,26,28]. Water deficiency in plants occurs due to the inaccessibility of water due to the reduced osmotic (aqueous) potential of the nutrient medium containing dissolved PEG.…”

Impact of Nitrogen and Phosphorus efficiency on the growth and flowering of Helichrysum bractum

“…It was known as Helichrysum bracteatum for many years before being transferred to a new genus Xerochrysum in 1990. Helichrysum are producing worldwide as fresh and dried flowers [1]; [2]; [3]. It was introduced to Europe around 1800.…”