Hostas are ornamental garden plants that can fall victim to a number of pests, infections and diseases, and holes in the plant's leaves are most commonly the result of insect infestation, including slugs and snails. Because slugs are nocturnal, gardeners who find holes in their hostas' leaves may not have any other evidence that slugs are to blame since these insects tend to hide during the day. However, holes are a good indication that insects are to blame as other pests, such as rabbits and deer, tend to focus on the plant's shoots or simply strip leaves bare, and diseases tend to result in brown patches or white cottony patches.
While insect damage is typically the most reasonable explanation for hole-shaped damage in hosta leaves, there are alternate explanations. Specifically, hail damage can also explain round holes in hosta leaves. This possibility can be easily eliminated from consideration, though, if the gardener knows for sure that no hail or other precipitation has fallen in their area since the holes in the plant's leaves appeared.
Diagnosing insects as the problem may take some trial and error. Although slugs are nocturnal, their slime trails can dry and be visible during the day, so looking for these trails is a good way to identify their presence.Learn More
Vertlicillium wilt causes the leaves of weeping cherry trees to turn brown and wilt, according to Garden Guides. The disease is caused by a fungal infection. The leaves of an afflicted tree will have veins that turn red from vascular damage, curl, droop or wilt, turn yellow and then brown before dropping from the tree. Verticillium wilt first attacks the roots and then the wood of the tree.Full Answer >
Hosta leaves can turn yellow from frost, sunburn, heat stress and disease. Like people, trees and plants are not immune to disease, injury and harm from the elements. Hosta plants are no exception, and like many plants and trees that sport foliage, they express physical harm and stress through the condition of their leaves.Full Answer >
There are a number of pests, including caterpillars, worms, moths and earwigs, that eat apricot leaves. Looking at the damage done to the leaf indicates what kind of insect is eating the leaves, according to SFGate.Full Answer >
According Wikipedia, as of 2014, there are over 3,000 varieties registered to the American Hosta Society, encompassing 45 specific species of hostas. Potentially, there are a large number of other varieties that have not yet been registered, but that also exist. Members of the succulent family, hostas are a common shade loving foliage plant used in gardens and as ground cover across the United States and England.Full Answer >