Planting a 9ft Leylandii hedge is a very quick option to achieving a large hedge fast. These plants are extremely bushy, all are 8-9ft (240-270cm) in height and will form a thick hedge immediately after planting. The height and bushiness of these plants means they represent good value for money for a hedge of this size. A 9ft leylandii hedge is often more the high enough for most gardens and these plants can be planted and trimmed down slightly to give a slightly lower hedge but a much more instant looking hedge.
Leylandii are a fast growing evergreen and these plants will put on 2-3ft (60-90cm) each year if left untrimmed and so it will not take long for these plants to produce a Leylandii hedge at the required height to give eye level privacy.
Once the plants have reached their desired height, we recommend that it be trimmed at that height which will both encourage side growth and restrict upward growth to a manageable amount. A leylandii hedge needs to be trimmed annually in the spring or autumn.
Any leylandii hedge plants should be planted 2ft (60cm) apart and if they are planted during the drier summer months, they must be properly watered in their first year to ensure that they establish properly. This is best done using leaky hose which is cheap, easy to install and very effective.
More information about leylandii hedges can be found on the Leylandii Hedging category page.