Hostas definitely make the list of easy-care perennials, and they make a great addition to almost any garden. A thread in the Garden Pests and Diseases forum, titled Something's killing my sedum The most common threat to sedum is excessive moisture. Common Pests and Diseases. But unfortunately succulents do develop issues from time to time and we need to be equipped to get them through the tough times as quickly as possible. Watch for aphids and flies. As a rule, sempervivums are tough little plants that can put up with a lot of abuse before they’re overwhelmed. However, if your sedum has been nibbled upon, there are a few likely candidates. Sedums rarely show signs of pests and diseases, but they are not completely immune. But every once in a while, these stars of the shade can still run into a few problems — even with perfect growing conditions. Boasting succulent-like leaves and large flowers, most insects don’t bother sedum. If disease has moved into leaf or stem parts, control may also be achieved with the use of fungicides applied as soon as symptoms are visible. Fortunately, Sempervivum have very few problems that aren’t caused by some mishandling of their environment. Sanitation is the most important means of control. However, a few precautions can reduce the frequency with which the problem occurs. Posted by @goldfinch4 on March 10, 2013. Identifying hosta problems. Remove dead flowers before gray mold develops. Pests. Sempervivum Diseases, Problems, and Pests. One of the great things about growing succulent plants is the lack of pests they attract. Sedum is one of the most disease resistant, easy to grow plants on the market today. Pests and diseases strike large collections of succulent plants in greenhouses and small windowsill collections indiscriminately, irrespective of the experience of the grower. Snails and slugs may also be problematic outdoors. Common Pests & Diseases Treatment for Succulents No one wants to witness their beloved succulents deal with annoying pests or fungal diseases. It is important to keep an eye out for small gnats, aphids, and mealybugs, as these are the most common succulent/cactus plant pests. Give these hardy succulents the right conditions, and they will seldom have trouble with pests or insects. Pests and Diseases: Sedum plant has is no serious pests or diseases issues. While pests are fewer on these plants, they may still sometimes attack. Pests and Diseases of Sedum. Catch these hosta troubles early, though, and you won’t have as much damage to deal with. Hardy, Tough and Disease Resistant Hens and Chickens. Extended rains or overwatering can lead to an accumulation of moisture, causing rot, mold, or fungus. Sedum is generally resistant to pests, though mealybugs, snails, slugs, and scale insects may take interest in the plant. 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