What's your question? Ask

Privet, or ligustrum, are generally disease and pest free, but they are troubled by a type of fungal infection called cercospora. This is difficult to treat because not all fungicides work against it. This article has more information: http://www.clemson.edu/public/regulatory/plant_industry/pest_nursery_programs/plant_prob_clinic/fact_sheet_folder/cercospora_leaf.html
When something is wrong with your plants, the best thing you can do is to find out exactly what the problem is, and use the specific treatment for that problem. Take some samples of the affected leaves to whatever expert source is available - extension service in the US,
https://www.gardeningknowhow.com/garden-how-to/info/what-is-extension-service.htm
master gardeners in the UK, Canada, and Australia. http://mastergardeners.org.uk/get-involved/find-your-nearest-master-gardener/
You can also always locate some experts by contacting the nearest botanical garden or university agriculture dept.

The texas privet (or japanese privet) is a fast-growing evergreen shrub that can grow 10 feet high and 5 to 6 feet wide. I did some research and it is recommended that large shrubs (8-12 feet tall) be planted 4-6 feet apart. Shrubs should be planted at least half the distance of their mature spread from your home’s foundation. Since the privet can grow up to 6 feet wide then you are looking at a distance of 3 feet away, but probably a little bit more if you need to take into account the drip edge of your roof.

For more information on privet shrubs, please visit the following link:
https://www.gardeningknowhow.com/ornamental/shrubs/ligustrum/growing-ligustrum-shrubs.htm

Sources:
https://www.ipm.iastate.edu/ipm/hortnews/2002/3-22-2002/hedges.html

I am not sure. It looks like it might be a privet, but there are a lot of similar-looking shrubs, at least until they flower. What is your location?

Here is a link with care information.
https://www.gardeningknowhow.com/ornamental/shrubs/ligustrum/growing-ligustrum-shrubs.htm

The last freeze date is not so important- the ground temperature is more important. After it's warmed up to about 40 degrees, you can plant. Late freezes will most likely not damage the plant if it's still dormant.

There are 2 basic techniques. 1. is to cut the entire shrub to the ground but this has to be done while it is still dormant. 2. is to remove 1/3 of the oldest branches to the ground yearly. Remove branches that grow in toward the center to open the shrub up to more sunshine. This allows leaves to form on the lower branches and for new shoots to be strong. Don't remove that 50% of the plants leaves.