When it comes to planting bare root Red Stemmed Dogwood, you must begin by soaking the roots for at least 2 hours in a bucket of water or spraying with a hose.
Whilst the roots are soaking, dig the planting hole to around 60cm deep and 60cm wide. Then add some manure, if possible, or organic compost onto the base of the soil, and cover with a layer of the excess soil you just removed. Water the hole/trench well.̴Ì?
For hedging, space the plants around 20cm apart (or 60cm apart for a thinner/ornamental hedge); stagger planting positions for a dense hedge. Then hold the plants in place, ensuring they are at ground level, and back fill with topsoil. Pat down the soil as you go along to secure the plant.
Finish off by watering the plants very well and placing around a 2-3" layer of mulch at the base of the plants. Continue to water well for around 1-2 years until the plants are established, and ensure weeding is carried out regularly.