Q.TREES
I purchased two Northwind Maples and they started to leaf out, when we got down to 26 degrees one day and the leaves curled up and dried.The trees seem to be green and the branches somewhat flexable with no signs of leafing out, can you tell me what to expect?
Leaf damage from frost will likely not effected the overall health of the tree.
Continue the care of your newly planted tree.
https://www.gardeningknowhow.com/ornamental/trees/maple/northwind-maple-information.htm
https://www.gardeningknowhow.com/plant-problems/environmental/frost-how-to-protect-your-plants.htm