We live in south Texas. We bought and planted (2) hyssops with adequate water. Both did OK for about two days and then began to wilt. It reminded me as if they were sprayed with an herbicide. We want them in our landscape but cannot figure what went wrong.
Planting and Caring for a Hyssop
Certified GKH Gardening Expert
Since it's newly planted, there may be gaps in the soil around the root ball that is drying out the roots. I would tamp down the soil around the plant. I would also recommend upping the watering. In addition, it could be suffering from shock. This article will help with that: https://www.gardeningknowhow.com/plant-problems/environmental/learn-how-to-avoid-and-repair-transplant-shock-in-plants.htm