Spring arrives earlier than ever recorded in southern US – adding to climate trend

Warming springs can cause plants to bloom earlier, alter hibernation times and locations for migrating animals, and increase insect populations

Across the south-eastern US, trees are unfurling their clouds of leaves after winter. Yet this picturesque and usually welcome development is this year cause for consternation.

New data from the USA National Phenology Network (USA-NPN) shows that in parts of North Carolina, South Carolina and northern Florida, spring has arrived more than three weeks earlier than average, and earlier than at any point in the last 39 years it has been tracked.