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www.gardeningknowhow.com/.../hosta-leaves-turning-yellow-2.htm

One of the beautiful features of hostas are their rich green leaves. When you find your hosta plant leaves turning yellow, you know something is wrong. If you want to find out why hosta leaves turn yellow, this article will help.

homeguides.sfgate.com/causes-yellow-leaves-hostas-38557.html

A hosta's green leaves may turn yellow from disease or pests. ... These plants are susceptible to a few pests and diseases, some of which may cause the leaves to turn yellow.

www.hunker.com/.../why-are-my-hostas-turning-yellow-and-brown

Hostas (Hosta spp.) are usually prized for their foliage, but yellow and brown leaves are not the most desirable of rewards. Growing in U.S. Department of Agriculture plant hardiness zones 3 through 8, they thrive in rich, moist soil and can tolerate full shade. Healthy hostas glow in shades of blue, green, gold and cream.

www.reference.com/home-garden/hosta-leaves-turn-yellow-e2...

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,...

www.gardenguides.com/88013-hostas-turning-yellow.html

Hostas are a shade perennial appropriate for use in non-tropical gardens and regions. It is a deciduous plant, losing its foliage in winter and resprouting each spring. Leaf yellowing can be caused by many factors, including too much sunlight, lack of soil moisture, infertile soils, soggy soil and ...

www.theguardian.com/.../feb/19/stumped-hostas-turned-yellow

My hostas have turned yellow ... Hostas turn yellow when they start to go dormant for winter. I'm not going to insult you by implying it could have been that (but do have a little think about the ...

homeguides.sfgate.com/hosta-care-after-browning-outside...

As the disease progresses the edges of the leaves turn yellow, then brown. ... Dig up and destroy infected hostas and do not plant any more hostas in the location for at least three years ...

www.missouribotanicalgarden.org/.../visual-guides/hosta-problems.aspx

Hosta leaf nematodes are microscopic roundworms that live, feed and reproduce inside the tender tissue of hosta leaves. Typical symptoms begin as yellow discoloration in late June, indicating that the nematodes are feeding. Later the affected areas develop into chocolate brown streaks, islands or wedges bordered by veins.