To protect your Summerfield Navel Orange Tree from frost damage, consider implementing the following strategies:
Choose a planting location with a microclimate that offers some protection from cold winds and frost pockets.
Water the tree deeply before a freeze, as moist soil retains heat better than dry soil.
Apply a thick layer of mulch around the tree's base to help insulate the roots.
Use frost blankets or other forms of frost protection to cover the tree during freezing temperatures.