I would like to plant the burning bush but I am getting conflicting information as to my zone. I am told it will not grow properly in Zone 9. When checking my growing zone, I receive results that I am in Zones 8 and 9. Will the burning bush grow in the eastern part of Volusia County, FL (about five miles from the coast)? The exposure will be sun from late morning through sunset.
That is a bit outside the zone that burning bush shrubs would grow. You could try to make a micro climate in your yard to grow it in. This article will help you with this: https://www.gardeningknowhow.com/garden-how-to/projects/how-to-make-a-microclimate.htm
Is it possible to start a burning bush from a cutting off the one I have?
Yes, you can. This article should help you with that: https://www.gardeningknowhow.com/ornamental/trees/tgen/how-to-root-cuttings-from-various-shrubs-bushes-and-trees.htm
Is it possible to prune a burning bush, and if so, when is the best time to do it?
Yes, you can prune a burning bush. This article will help you with that: https://www.gardeningknowhow.com/ornamental/shrubs/burning-bush/pruning-burning-bush.htm
How can I grow new plants from my existing burning bush?
You can root cuttings from the plant. Softwood cuttings are best for this plant. This article will help you with that:
I live in northern Michigan and have a burning bush that did not produce any leaves yet this year. We did have warm tempertures in April, and then a freeze and snow in May for a few days. The bush is completely bare. Should I keep it in hopes that it will produce leaves next year?
This article will help you determine if it is still alive:
If it is still alive, leave it in. The live stems will regrow the leaves.
We have planted burning bushes and they have turned yellow and somewhat thin. They are mulched in and fertilized annually. We have applied iron and still very yellow. They turn red very early in the fall.
I would have the soil tested. While you are fertilizing, if there is not the right combination of nutrient or not enough of any of the nutrients, it can cause this. In the meantime, it would not hurt to give the plant some potash for potassium.
Here is an article which will outline some other possibilities:
We just planted new burning bushes and golden mops. Watering three times a week. But how much water should we give bushes when we water them? We live in Maryland and have clay soil, amended with peat moss.
The same advice for watering new trees can generally be applied to shrubs as well. That being said, this article should help: https://www.gardeningknowhow.com/ornamental/trees/tgen/watering-newly-planted-tree.htm