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 a... More »

According to the Missouri Botanical Garden, heat stress or fungal disease can lead to the yellowing of hosta. Scorch or heat stress leads to browning leaf margins and yellow areas between the main leaf veins. Fungal dise... More »

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Variegated hostas have leaves with two colors, distinguishing them from other types of hostas that have solid-colored leaves. A variegated hosta has bright green leaves patterned with light green, yellow or white. More »

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According to the Missouri Botanical Garden, heat stress or fungal disease can lead to the yellowing of hosta. Scorch or heat stress leads to browning leaf margins and yellow areas between the main leaf veins. Fungal dise... More »

www.reference.com Home & Garden Gardening & Landscapes

To properly winterize daylilies, trim away browning and dead leaves and blooms before the first frost to protect root balls. Winterizing may also include thinning large clumps and clearing dirt away from the base of any ... More »

Rosemary leaves can turn yellow because of cultural issues, whiteflies, botrytis blight and spider mites. Cultural issues are a common cause of yellowing rosemary leaves and occur when the plant's root system is too larg... More »

There are three reasons the leaves of a hydrangea plant would turn yellow: water issues, nitrogen deficiency and iron chlorosis. Water issues are the easiest to fix, but it is still possible to restore the leaves from th... More »