Cassa Blue Flax Lily

Dianella caerulea 'DBB03'

Dianella ‘Cassa Blue’ in bloom in April 2015 before the start of treatments. Photo: SK Reid.

Summary

This evergreen Australian perennial with bluish gray leaves showed no significant differences in growth between irrigation treatments. All treatment levels were completely free of pests or signs of disease, but showed some minor tip burn which we attributed to boron sensitivity, since boron is present in our water. Flowering began in March, peaked in April, and continued through July. The only irrigation-related differences between treatments for flowering were seen in June, where 60% plants had marginally higher ratings than other treatments, and in July, where all but the lowest irrigation level still showed some bloom (Table 5).  However, the best overall appearance through the season was on the 40% treatment, which was enough water to keep foliage looking fresh without accumulating much tip necrosis. The average height and width at the end of 2 years was 25.5” x 34” (78.5 x 87 cm).

Growth and Quality Data

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