I have a photinia which has been in the ground about 8 yrs but it has only grown to 5 ft, 6 inches in height and spread about 6 ft. Now the middle is wilting, and I want to know if it would be ok to dig it up and move it to a better site.
Spring is the best time to move them, shortly followed by fall. They may experience transplant shock. This article will help you avoid that: https://www.gardeningknowhow.com/plant-problems/environmental/learn-how-to-avoid-and-repair-transplant-shock-in-plants.htm
I am considering using Photinia as a tall screening hedge on the western side of my pool fence but need to know if they have an aggressive root system that might compromise the integrity of the pool and surrounding concrete.
Photinia does not have what is considered an aggressive root system. It generally has more shallow roots. Care needs to be taken planting any shrub or tree near foundations, well, septic systems and pools.
I would consult a pool expert to the spacing of plantings that would be a safe distance from the pool.
Here is a link with growing information.
https://www.gardeningknowhow.com/ornamental/shrubs/photinia/growing-red-tip-photinia.htm
What kind of a root system does a photinia bush have? We need to dig one up and it's near underground electrical wiring.
Transplant your shrub in the fall. Water well 2 days prior and and allow it to drain the day before you dig it up.
Trim the plant back to about 3 feet height.
Dip down around the base about 24 inches around. You may need to cut roots with a garden lopper.
Mist the roots and cover while you move the shrub to it's new location.
Plant according to growing information in the link below. Water well to get established before winter.
https://www.gardeningknowhow.com/ornamental/shrubs/photinia/growing-red-tip-photinia.htm
Please can you advise which variety of photinia is in the photograph on your website: https://www.gardeningknowhow.com/ornamental/shrubs/photinia/red-tip-photinia-fertilizer.htm Can you also provide details of height it grows to, etc.?
That is a Red Robin photinia (Photinia x fraseri), also known by red-tip photinia. This shrub generally grows anywhere from 10-15 feet tall and wide. Here is more information: https://www.gardeningknowhow.com/ornamental/shrubs/photinia/growing-red-tip-photinia.htm
Why are my redrobin leaves going yellow?
It is best to take care of signs of issues right away with Photinia.
Yellowing leaves can be an indication of excess or poorly draining water.
Nitrogen deficiency is also a common cause of yellowing.
It is best to have a soil test done to ensure the correct application of a nitrogen rich fertilizer.
Inspect the plant for insects, an infestation can also cause the stress and yellowing of leaves.
Treat with Neem Oil for most insects.
Here are some articles with more information.
https://www.gardeningknowhow.com/ornamental/shrubs/photinia/growing-red-tip-photinia.htm
https://www.gardeningknowhow.com/ornamental/shrubs/photinia/red-tip-photinia-fertilizer.htm
Why are my photinia's leaves having partial discoloration? I don't know if it's water or sun or disease.
I believe this is a fungus issue. Photinia leaf spot.
Here is a link that has more information.
https://www.gardeningknowhow.com/ornamental/shrubs/photinia/photinia-leaf-spot.htm
I planted 9 dwarf photinia 12 months ago. Started by digging a trench a filling it with a soil and general compost mix. The leaves on 7 of them have recently gone all red and the photinias seem to be dying. They are exposed and are planted alongside a pavement and road (see photo). Can you advise what will have caused this problem and whether there is anything I can do to save the plants. Many thanks
This is the natural coloring and leaf progression for the Red Tip Photinia shrub.
Here is an article to refresh you on the care of this shrub.
https://www.gardeningknowhow.com/ornamental/shrubs/photinia/growing-red-tip-photinia.htm