When a group of words. containing a subject and verb acts as an adverb, it is called an adverbial phrase. Prepositional phrases frequently have adverbial functions (telling place and time, modifying the verb): 1  He went. . 2  She works. . 3  They lived in Canada. .
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.
The tree grows to a height of 50 to 70 feet, and although the spread is only 12 to 15 feet, it may overwhelm small, residential properties. Therefore, larger areas are most suitable for growing a Leyland cypress tree.The tree is also useful in coastal landscapes where it tolerates salt spray.eland cypress (x Cupressocyparis leylandii) is a rare, but successful, hybrid between two different genera: Cupressus and Chamaecyparis. Leyland cypress has a short lifespan for an evergreen tree, surviving for 10 to 20 years.