Spring is short in Louisiana. Weather rapidly transitions from winter to summer. But if you look for it and you're aware of the signs, spring actually starts to show up in February in Louisiana, especially in the southern part of the state.
Spring lingers through late April and into May. So we actually have eight weeks of spring weather, which isn't so bad. But whichever way you look at it, May is the first month of summer in Louisianans, so now is the time to switch from spring gardening activities to summer ones.