The Secret to Transplanting Success? Mud!
Muddy-in your new plants to hold water near the roots
Once your plant is in the ground, make a raised rim of soil around it, slightly wider than its roots, and fill to the brim with water. This will help hold water around the roots until the plant establishes in its new home. Some plants suffer "transplant shock" and fail to take up water through the roots for awhile after being planted in a new location. Muddying-in ensures that the roots are drenched in water, and prevents air pockets in the soil surrounding the roots. If your plant still begins to wilt but the soil is nice and moist, try putting some shade over it for several days. This will slow down loss of water through the leaves, giving the plant more of a chance to settle in.