To form our parallel evergreen hedge, we planted the cell-grown saplings at the start of June 2017, so this is now their third summer in the garden.
|the saplings after planting in summer 2017 ...|
|... and in early summer 2018|
For the first couple of years, we'd basically just left them to become well established, resisting the temptation to trim or thin them in any significant way.
Left to its own devices, Cotoneaster Lacteus is of spreading & arching habit and hence very slow in gaining significant height, so by this April there was a dense tangle of low growth and it was time to start training some of it upwards to form the high hedge we want.