Posted: 19/02/2015 at 21:35
WillowKitten, I'd soak the rose overnight before planting. Roses sold in shops bare root have been out of the ground for some time, considerable time in some cases. Soaking overnight increases the chances of survival as the roses capillary system needs to be kicked into action asap. Also soak the whole bush, weight it down if necessary in a bucket in the kitchen it needs to re hydrate before planting.
For best results add not only the fungi but as much well rotted manure and some bone meal to the planting hole and water in with at least a watering can full of water. Then mulch it heavily 2-3 inches deep around the plant. Water it weekly for a month, don't rely on the weather to do it for you.
If you get the above right first time it cuts down on the attention you give it later in the year and it establishes more quickly.
This applies equally when growing in tubs or pots.