A " most faithful " indicator plant is " Ocimum centraliafricanum ", the " copper plant " or " copper flower " formerly known as " Becium homblei ", found only on copper ( and nickel ) containing soils in central to southern Africa.
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Using growing degree days ( a method of tracking cumulative temperatures ), indicator plants ( plants that bloom at the same time a pest is active ) and frequent inspection, homeowners and landscapers can be aware of potential pests and watch for signs of damage.
