Photinia Red Robin is grown for the spectacular new red foliage. Pruning throughout the year helps to encourage this spectacular foliage. Prune back quite hard after the foliage has faded to a dull bronze. This will ensure a further 'crop' of new growth. As with other evergreens, it is best to prune Photinia Red Robin in the growing, and not dormant, seasons.
You can prune Photinia red Robin into a formal shape if desired. For this reason it can make a superb - colourful – Red Robin hedge.
Photinia is quite quick growing once established, and may need to be pruned back hard if growing out of control.
As with most evergreen shrubs, the best time to Prune Photinia Red Robin is at the start of the growing season - late March/early April in UK. It will soon re-grow, and then can be kept under control by pruning as and when required - above.
The main exception is if you want a flowering Photinia. If this is so, then delay all pruning until the flowers have finished. Be aware that any pruning late in the season - after flowering - will also affect the plant's ability to flower the following year, as there will not be time left for the new flowering buds to develop.
Photinia (Stranvaesia) Red Robin, showing the bright new red shoots in spring/early summer.
A further flush of red growth can be persuaded to shoot out, either by cutting back hard or by light prune with shears. When doing this type of pruning, remember that you are taking a lot of growth from the shrub, so help the Photinia to put on a colourful display for you after pruning, by giving a feed of Fish Blood & Bone or other general fertilizer. Cut the growth back to your desired size – it will soon start to re-grow. Don’t be afraid of cutting back into old stems.
All evergreens should are ideally pruned during the growing season Photinia Red Robin is not an exception. The best time for the first pruning session is just as the first flush of red Robin foliage starts to turn green. This is normally around 6 weeks into the growth season. This will then encourage the red Robin bush to sprout new stems – ablaze with colourful foliage
If grown as a hedge, then prune as required - either with electric hedge shears or any normal pruning aid. But wait until growth starts in the spring. Any pruning carried out in winter will not start to re-grow until spring, so you could end up with a semi-bare hedge that does not deserve the name Red Robin.
Photinia Red Robin responds well to regular cutting back! Lack of regular pruning can persuade the Red Robin to flower. Flowering Red Robin are quite attractive if seen in masses. This shrub is not seen in flower too often, mainly because of the regular pruning that it gets. However, if you have space, then lay off the pruning for a whole year and you will probably be rewarded by a good show of flower trusses atop the branches.