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In order to introduce colours to the large white calla lilies, like the many colours available in the dwarf summer calla lilies, attempts have been made to hybridise Z. aethiopica with Z. elliotiana. These have resulted in albino progeny, which are non-viable. [citation needed]
The majority of insect pests on canna plants can be sprayed with a 70% isopropyl alcohol mist—diluted slightly—applied during non-sunny periods, as the alcohol may cause sunburn on the plant. Other effective options include insecticidal soap , neem and horticultural oils , and other commercially available spray treatments.
Zantedeschia are relatively hardy plants, but some are more winter-hardy than others. In this regard there may be considered two groups, a hardy outdoor group with large white flowers (arum lilies) and less hardy group with white-spotted leaves and flowers in many colours (calla lilies), such as yellow, orange, pink and purple. [17]
Herb up to 3 m with stout, erect stems. Leaves large, oblong, acuminate. Flowers 10–13 cm. (4-5") long, honeysuckle-scented, borne in a short, terminal raceme; perianth tubular, the three outer petaloid lobes linear-oblong, convolute, reflexed, tinged green, the three inner ones straight and extended, recurved at end, white, tinted yellowish-green.
[2] [3] [4] This group has occasionally been referred to as the Année Group, after the originator, Théodore Année, the world's first Canna hybridizer. However, the use of an accented character in the name creates problems, both in pronunciation and keyboard entry, that it was felt that as they were grown primarily for foliage, then "Foliage ...
Calla lily is a common name of several members of the family, Araceae. It may refer to: Calla palustris; Zantedeschia generally Zantedeschia aethiopica specifically;
[6] [7] As of March 2020, the World Checklist of Selected Plant Families and Plants of the World Online regard many of these as synonyms (most of Canna indica) but also recognise two further species, making 12 in total.
In modern cultivation, numerous color variations have been developed, ranging from white with splashes of other colors to bright yellow through to deep purple, almost black, spathes. Various forms are commonly sold in stores and garden centers, both as potted plants or as bare-root rhizomes to be planted outdoors.