Onions and Garlic

Why are the inner leaves of the onion so thick?

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March 28, 2014 12:25AM

The Edible Onion is naturally a biennial plant, so it takes two years to reach maturity and flower. This means it needs to store food over the winter period, It does this by thickening the bases of its leaves to form a bulb during the first year of growth. The bulb stores sugars and starches for the next growing season and we harvest the onion at this stage to make use of this food store.