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Question
Biology
Posted 10 months ago
Why is a leaf or leaves just below the pinch of a poinsettia sometimes removed at pinching?
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Answer from Sia
Posted 10 months ago
Answer
Leaves below the pinch of a poinsettia are sometimes removed to encourage bushier growth and more flower bracts.
Solution
a
Hormonal Response: Removing leaves can alter the balance of plant hormones, particularly auxins, which can stimulate the growth of lateral buds
b
Energy Redistribution: By removing leaves, the plant can redirect energy from maintaining those leaves to the development of new shoots and bracts
Key Concept
Plant Hormones and Energy Allocation
Explanation
Removing leaves below the pinch affects plant hormone levels and energy distribution, promoting a fuller, more desirable shape and increased flowering in poinsettias.

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