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Canna leaf roller refers to two different Lepidoptera species that are pests of cultivated cannas. Caterpillars of the Brazilian skipper butterfly ( Calpodes ethlius ), also known as the larger canna leaf roller, cut the leaves and roll them over to live inside while pupating and eating the leaf. [ 1 ]
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.
Sometimes leaves are slightly distorted and puckered. Like many plants under stress, affected cannas will flower very early in the season and before the plant is full height. Over the years the canna will lose vigour and become increasingly unsightly. Some are spread by aphids and other sap sucking insects.
The canna leaf roller butterfly (Calpodes ethlius) has been seen on Canna plants in the US. [22] It is a caterpillar known as the worst pest for this plant and primarily found in the Southern United States. This pest causes damages by laying its eggs in the bud of developing stalks.
Cockchafer feeds on deciduous plant and fruit tree leaves, including oaks, maple, sweet chestnut, beech, plum, and walnut trees. The feeding behaviour of larvae can cause severe damage to the plants. They feed on both the small roots of field plants such as grain, grass, tree, beet roots and the large part of crop rootlets.
A veterinarian's warning is an important public service announcement to all pet owners — especially people who have cats. Dr. Michele Forbes, DVM shared an update amid the news that the H5N1 ...
Antibiotic use is common in older people, with those over age 65 consuming 50% more antibiotics than younger adults. Using antibiotics is linked to disturbance of the gut microbiome, which may ...
Thalia dealbata, the powdery alligator-flag, [2] hardy canna, or powdery thalia, is an aquatic plant in the family Marantaceae, native to swamps, ponds and other wetlands in the southern and central United States.