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Lovely shrub Photinia frasseri x "Red Robin" ! Notoriously difficult to propagate here - but in natural form grows like Billio in Australasia. This, in my opinion is an extremely valuable plant in many ways. Turning it into a "standard" - in my opinion is a bit daft. If it is planted as an ordinary bushy shrub, and pruned regularly - as soon as the new red shoots go """all green and ordinary"""" give it a haircut. This winter I`ve cut my photinia hedge really hard. I grew it from my own hardwood cuttings, and decided that it should be kept at a height that could be appreciated from an eye view.
Red Dahlia....your dad had the right idea ! Gardening is usually more about - what you take out - rather than what you put in.
We so often forget that nature takes her course ! What appears to be a problem when the weather is adverse is just our lovely living plants taking care of themselves.
When we have `orrid weather - chill out and wait. Most probs get sorted as soon as Spring gets going.
Photinia is prone to its own version of Rose Black Spot, and should be treated in the same way. Remove affected leaves ( it may look very bare for a while but will recover) and pick up any fallen leaves. Spray new growth with a fungicide like Systhane.
It spreads through a photinia by means of raindrops landing on an affected leaf and splashing onto other leaves.
My photinia recently has lost lots of leaves - post sever winds and salt from sea spray. Some new leaves curly after a short time. Should i prune back to healthy shoots.? New growth seem ok? Confused.. Had a beautiful bushy hedge.. Can i rescue it?
Now its sparce and needs something.. Help please.