Why does cutting off the tip of the main stem ofa plant often result in the plant growing bushier?
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When the tip of the main stem is cut off, the apical meristem is no longer there producing auxin. As a result, growth of the main stem slows and the meristems in side branches begin to promote growth there
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Explanation:
To top a plant, simply cut the tip off the apical meristem, the growing tip of the main shoot—the very top of the plant. This will cause the main stem to fork into two main branches. Topping will also promote lateral growth of the lower branches, causing the plant to develop a bushier, shorter look overall.
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