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  2. Puccinia thaliae - Wikipedia

    en.wikipedia.org/wiki/Puccinia_thaliae

    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.

  3. Canna (plant) - Wikipedia

    en.wikipedia.org/wiki/Canna_(plant)

    However, they may fall victim to canna rust, a fungal disease resulting in orange spots on the plant's leaves, caused by over-moist soil. They are also susceptible to certain plant viruses , some of which are Canna -specific , which may result in spotted or streaked leaves, in a mild form, but can finally result in stunted growth and twisted ...

  4. Leaf spot - Wikipedia

    en.wikipedia.org/wiki/Leaf_spot

    May show concentric rings with purple margins. Necrotic tissue may fall out to appear shot-holed. Leaf spot on many plants and crops. Septoria: Small brown spots, that turns light tan to white in the centre. Leaf spot on many crops Bipolaris: Leaf spot on grasses Drechslera: Leaf spot on grasses Exserohilium: Leaf spot on grasses Curvularia

  5. Canna indica - Wikipedia

    en.wikipedia.org/wiki/Canna_indica

    One of them is Canna rust (Puccinia thaliae), a fungus that causes orange spots on the leaves. In addition, plant viruses occur: Hippeastrum mosaic virus , Tomato aspermy virus , Canna yellow mottle virus and Canna yellow streak virus which can cause mild or strong symptoms from streaked leaves, stunted growth to distorted blooms.

  6. Canna virus - Wikipedia

    en.wikipedia.org/wiki/Canna_virus

    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.

  7. Canna 'Yellow King Humbert' - Wikipedia

    en.wikipedia.org/wiki/Canna_'Yellow_King_Humbert'

    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 ...

  8. 7 Reasons Your Prayer Plant's Leaves Are Curling—and ... - AOL

    www.aol.com/7-reasons-prayer-plants-leaves...

    Temperature Extremes. The ideal temperature range for a prayer plant is between 60 to 80 degrees Fahrenheit, says Langelo. Any temperature that is lower or higher can cause the leaves to curl.

  9. Shot hole disease - Wikipedia

    en.wikipedia.org/wiki/Shot_hole_disease

    The infection on the fruits in turn begins as small purple spots that develop into gray to white lesions. Gummosis may occur (both on the fruits and the stems as well). These lesions leave toughened spots on the skin, and in some cases the fruit may be lost. Infected buds may appear darker than normal.

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