MYM - The Happy Tree

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This tree is on the estate where I live. I pass it every day and when the sun is on it it shines bright yellow. (Much better than my photo can capture). And it's added to by the bush underneath. Whenever I see it, no matter how bad the day, it cheers me up.

Mellow Yellow Monday

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as always with all things horticultural, I have no idea what this is, except yellow.