how fast does leylandii grow
It depends on the growing conditions but under good conditions, your Leylandii should thicken out to form a good screen in about 2 years when planted at 2ft (60cm) apart and 3 years when planted at 3ft (90cm) apart.Planting them well is extremely important to get good growth.arger Leylandii plants will establish and grow away quickly if they are planted properly. Leylandii have been selected over the years to establish well from larger plants. If you want a quicker screen, then plant larger specimens as this will save time.