Let us know if you need more details or have any other questions. If you find that the lower portion of the plant is still alive you can cut it back to the point where it's green, and then hope it will leaf back out and start growing again. If the under bark is black or brown that branch is dead. To see if the plants are still alive you can scrape a small section of the bark using a knife, a coin or your fingernail. In this case there's a possibility the plants could be saved by providing some supplemental water as needed to keep the soil moist but not wet. On the other hand, if the soil is bone dry then the plants could have died from lack of water. This might mean bringing in screened top soil to raise the planting area or planting in individual raised mounds that will ensure the roots of the plants won't ever be standing in water. All you can do is take steps to improve the drainage and replant. Unfortunately, once a plant develops root rot, and all or most of its leaves have turned brown, there's little that can be done to save it. If the hole has water standing in it or looks soggy then you know the soil is not draining sufficiently, and this is what caused your shrubs to turn brown and die from root rot. Otherwise you need to dig a small hole near the plant at least a foot deep and wide. If these are recently planted shrubs, which haven't yet rooted in to the soil, you can lift one out of the ground. If not spider mites then check the soil for drainage. Sky pencil Japanese holly is incredibly slow-growing, so you can keep your cutting in the container for as long as 3 to 4 years. Keep the container in a warm and sunny spot to root. The following is a detailed description of my new holly cultivar with. Dip the cut end into a rooting hormone and plant in a container with a mixed potting mix. Then check the plants again in a week to ten days and spray again if necessary. 2 is a picture of a six year old ' Sky Pencil ' plant growing in Tifton, Ga. If so, you'll need to spray the plants with a solution of insecticide such as Malathion or neem oil. If you see tiny insects moving around on the paper then there are spider mites present. To do this shake some of the live branches, which still have green foliage, over a white sheet of paper. So, first I'd check for and rule out spider mites. In isolated cases the plants can be damaged or will die from lack of water or a serious untreated infestation of spider mites. Like many other ornamental shrubs, all varieties of Japanese holly are susceptible to root rot in poorly drained soils. Nine times out of ten this is caused by a soil moisture problem, usually soil that is too wet for too long due to excessive and prolonged rainfall or irrigation. However, from time to time we hear reports similar to yours where either parts or all of the plant turns brown and dies. Typically, these are long lived hardy shrubs. Sky Pencil is one of the Japanese holly (Ilex crenata). Hi Sandy - Sorry to hear that some of your Sky Pencil Holly turned brown.
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