Planting & Moving
Throughout March you can continue planting deciduous hedging plants, shrubs, trees and climbers. Towards the end of the month you can begin to plant evergreen shrubs and trees, if you live in a warmer area then it is also a good time to start moving any evergreen Trees and Shrubs. (It is better to wait until early April in Colder areas). The soil condition is extremely important, ensuring it is not waterlogged or frozen solid. You shgould also bear in mind that they will need careful attention to watering if they are to survive their first summer after moving.
Many summer or late-summer flowering deciduous shrubs can be pruned between January & March. Examples include Buddleja Davidii, Caryopteris Clandonensis, Ceratostigma, Hydrangea Paniculata, Leycesteria, Lavatera, Perovskia, Hardy Fuchsia & Deciduous Ceanothus species.
Shrubs such as Buddleja Davidii, Salix Alba Var, Eucalyptus Gunnii & Cornus Sanguinea Cultivars are usually cut back very hard, this keeps them at a manageable size.
Maintain pruning on pollarded trees such as willow (Salix) and lime (Tilia), cutting back all growth to within two or three buds of the crown.
Pests & Diseases
Inspect sick looking box and holly trees for signs of blight, Bracket fungus on trees is also more visible at this time of year. Phytophthora root rots can cause die back on mature trees and shrubs. Wet winter weather and poorly drained soils are likely to encourage this problem on susceptible woody plants.
Be aware that pests emerge as the weather gets warmer. Caterpillars, aphids and fly pests may all become problematic during mild spells. Early infestations can often be managed by hand removal, making insecticides unnecessary.