what are the plant indicators?
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Indicator plants are a bit like the canary in the coalmine. ... These brave plants risk their lives to help protect other plants. They can help indicate when it is time to treat for pests and disease. They help point out soil and water deficiencies and act as plant watering indicators.
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The substance which indicates that substance is acidic or basic in nature they are called Indicator. The indicator are of two types Plant indicators and chemical indicator. Plant indicators are used for testing whether a substance is acidic or basic in nature. Some plant indicators are Beetroot,red cabbage,lichens,etc..
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