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Enjoy "Digging Into the Gardens" blog, written by Denver Botanic Gardens' staff. Learn about gardening, horticulture, research, conservation, special events, art, tours and much more. 

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Oh the Gall! Strange Growths on Leaves

July 30, 2018 Emily Stine
One of the most frequent questions I get around this time of year is “what is growing on my leaves?” while being handed a hackberry leaf with knobs on the back. These knobs are galls – abnormal

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