Training pyracantha up a wall
I’m looking to train this pyracantha up this wall, roughly covering the square area you see in the first picture. I have planted it out from the wall so that it will get plenty of water and leaned it back a little so it doesn’t stand too proud of the wall.
I think the next step is to put up a trellis behind it and start tying in the branches that go backwards, outwards and upwards and cutting back those that face forward. Is it as simple as that or is there anything else I need to know?