Toronto’s trees are changing colour earlier than normal. Here’s why — and how it’ll affect the vibrancy of autumn
- Posted on September 21, 2025
- By The Toronto Star
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Toronto’s trees are changing colour earlier than normal. Here’s why — and how it’ll affect the vibrancy of autumn

Experts say more trees in Toronto are stressed this fall after drought conditions and record-breaking heat in the summer, leading to premature “dead” leaf browning and a duller fall foliage.