Answer: Hollies tend to develop a reddish tint on their leaves during the winter months, typically as a result of cold weather. The red should fade. The important thing is whether or not your holly is putting out new growth. If so, all is well and the tint is simply a result of winter weather. If the tint develops further, your soil pH could be off (hollies appreciate a slightly acid soil) and the reddish tint can indicate minerals are lacking - perhaps bound up and unavailable to the roots because of the soil pH.
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