- Canna rust
Taxobox
image_caption =
name = "Puccinia thaliae"
regnum =Fungi
phylum =Basidiomycota
classis =Urediniomycetes
ordo =Uredinales
familia =Pucciniaceae
genus = "Puccinia "
species = "P. thaliae"
binomial = "Puccinia thaliae"
binomial_authority =
synonyms =Canna rust is a
fungal disease of canna caused by "Puccinia thaliae".Symptom s include orange spots on the plant's leaves and stems. In advanced stages of infection, the upper leaf-surface spots coalesce, turn dark brown-to-black and finally the infected leaves become dry and fall.Control
When Canna rust first appears, the affected foliage should be removed and discarded, otherwise the fungi will propagate and destroy the whole plant. The affected foliage should not be composted, as that will simply spread the fungus further.
Commercially, a liquid copper-based spray can be sprayed on the stems and both sides of the leaves to prevent fungal problems before they occur. Although used commercially,
copper is not recommended for home use because of itstoxicity .External links
* [http://www.bspp.org.uk/ndr/jan2004/2003-61.asp - British Society for Plant Pathology report on Canna Rust]
ee also
* Canna
*List of Canna species
*List of Canna cultivars
Wikimedia Foundation. 2010.
