When is the best time to prune a red-tip bush?
Spring is a great time to prune red tips.
How and when do you trim/prune red-tip photinia (in Austin, TX)?
Prune your Photinia anytime between spring and early fall, with late spring/early summer more acceptable. Red Tips are excellent candidates for rejuvenation pruning. To rejuvenate the plant, cut it all the way back to the ground...to about 6 inches from the ground. It should grow back nicely and you can expect to see 3 to 4 feet of new growth the very first year.
We have red tip shrubs around our office and they are being pruned right now. What is the best procedure for planting the cuttings in another location and how large do they need to be?
This article will help: https://www.gardeningknowhow.com/ornamental/trees/tgen/how-to-root-cuttings-from-various-shrubs-bushes-and-trees.htm
I have a bed 35 ft. long by 4 ft. wide.
These shrubs will generally do well when spaced about 3 to 4 foot apart.
When is a good time of season to cut back the red tip bushes?
They should be pruned in the winter while tehy are dormant.
I recently moved into a new home and am trying to decide on what shrub to use for privacy. How far apart should I plant Red-Tipped Photinia bushes, if that is the shrub I select?
Space about 3-4 foot apart. This article should help as well: https://www.gardeningknowhow.com/ornamental/shrubs/photinia/growing-red-tip-photinia.htm
I have a completely dead or diseased Red-tip Photinia and would like to know what salvation options I have, if any. Also, there are neighboring or adjacent Red-tips that appear to be 'catching' this disease and I would like to see what I can do for these degrading plants as well.
Sounds like a fungal disease. This article should help: https://www.gardeningknowhow.com/ornamental/shrubs/photinia/growing-red-tip-photinia.htm