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Puccinia thaliae is the causal agent of canna rust, a fungal disease of Canna. Symptoms include yellow to tan spots on the plant's leaves and stems. Initial disease symptoms will result in scattered sori (clustered sporangia), eventually covering the entirety of the leaf with coalescing postulates.
Canna 'Yellow King Humbert' Burbank is a medium sized Italian Group Canna cultivar; foliage green, but often variegated purple markings and occasionally whole leaves purple, oval shaped, spreading habit; oval stems, coloured green + purple; flower clusters are open, spotted, colours yellow with red spots, often large red markings and occasionally whole flowers red, staminodes are large; seed ...
The genus Canna is susceptible to certain plant viruses, which may result in spotted or streaked leaves, in a mild form, but can finally result in stunted growth and twisted and distorted blooms and foliage. Known species of virus are: Canna yellow mottle badnavirus (CYMV) infecting canna species.
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. Granulated systemic ...
The plant has been grown as an aquatic ornamental because of the pretty violet flowers, and in cultivation has been proved hardy as far north as Philadelphia (Pennsylvania) and Vancouver (British Columbia). [6] [7] [8] Thalia dealbata grows to 6 ft (1.8 m), with small violet flowers on an 8 in (20 cm) panicle held above the foliage.
Canna indica, commonly known as Indian shot, [2] African arrowroot, edible canna, purple arrowroot, Sierra Leone arrowroot, [3] is a plant species in the family Cannaceae.It is native to much of South America, Central America, the West Indies, and Mexico.
The Musaefolia Group, having large leaves and being either tall or giant in size consists of cultivars whose leaves resemble those of banana plants (genus Musa). Until this group was designated, the cultivars were considered to be members of the Foliage Group.
Spreading stems and gently spreading leaves creates a goblet shaped clump. Plant height 5 m (16 ft). The foliage is green with pale inner edge and dark outer edge. Flowers are pendant shaped carmine-red to purple, 10–14 cm (4-5½ in) long, with a relatively long tubular part and 8 coloured lobes; petals not reflexed; staminodes 4.
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