If you noticed that the plants bloom earlier than you remember in the past, you ae not the only one. In the 1980s, strawberry plants in New Jersey used to bear fruit in June. These days, they peak in May. Magnolia trees used to bloom in Boston in May; now the magnolias often bloom in April. To make Vermont’s famous maple syrup, one collects sap through a tap inserted into the trunk of a sugar maple tree. But you can’t tap a tree at any time of year. You need to wait until the temperature is above freezing during the day but below freezing at night. Those specific conditions normally don’t ocuur till March; but these days people tap their trees in January and February.
These are just a few examples in an article in the Washington Post. To see the wide range of effects across the country read this article by Harry Stevens.