False Spring: Unseasonal Weather is Scary

A false spring is a period in late winter or early spring during which the weather is warm enough to deceive vegetation, causing plants and animals to awaken early from dormancy.
The longer a false spring lasts, the higher the likelihood of plants being lulled into a false sense of security, causing them to bud and bloom. This is tricky, because winter warm spells are often followed by periods of freezing temperatures. When this happens, the plants can die.