Bring as much of the roots as possible – Along the same lines as the tip above for plant preparation, preventing shock means when digging up the plant, make sure as much of the roots as possible is brought up with the plant. The more roots that come with the plant, the less likely transplant shock in plants will set in.
Water thoroughly after transplanting – An important transplant shock preventer is to make sure that your plant receives plenty of water after you move the plant. This is a good way how to avoid transplant shock and will help the plant settle in to its new location.
Always make sure the rootball stays moist when transplanting – For this transplant shock preventer, when moving the plant, make sure that the rootball stays moist in-between locations. If the rootball dries out at all, the roots in the dry area will get damaged.
Cure plant transplant shock
While there is no sure fire way to cure plant transplant shock, there are things you can do to minimize the transplant shock in plants.
Add some sugar – Believe or not, studies have shown that a weak sugar and water solution made with plain sugar from the grocery store given to a plant after transplanting can help recovery time for transplant shock in plants. It can also be used as a transplant shock preventer if applied at the time of transplanting. It only helped with some plants, but as this will not harm the plant, it is worth a try.
Trim back the plant – Trimming back the plant allows the plant to focus on regrowing its roots. In perennials, trim back about a 1/3 of the plant. In annuals, if the plant is a bush type, trim back a 1/3 of the plant. If it is a plant with a main stem, cut off half of each leaf.
Keep roots moist – Keep the soil well watered, but make sure that the plants has good drainage and is not in standing water.
Wait patiently – Sometimes a plant just needs a few days to recover from transplant shock. Give it some time and care for it as you normally would and it may come back on its own."
Found this on the web.
