Help identifying a flower bush. Any experts?

It is a type of hydrangea. The flowers do not have to be cut off, they do dry up but have a little winter interest when the leaves are gone. You may want to trim the shrub in late spring to remove any dead flowers left and dead branches. Hydrangea leaves sprout later in spring sowhen you can see the green buds on stems, check for branches with no green buds and they can be removed. They are fairly hardy and will flourish even more with a general fertilizer applied in spring. Use one for flowering plants. A foolproof fertilizer like osmocote is applied once and is slowly released over the next few months. good luck John

I have to disagree with the person who said that it is a hydrangea - hydrangeas have much larger leaves, and are generally either pink or blue, depending on the soil in which they are planted; I've included a link to a good picture of hydrangeas below. That being said, I don't know what it IS - but it looks healthy, so I'd say just keep doing whatever you're already doing!

I don't think this is a hawthorn or a viburnum. Its hard to check from the photo but if it has 4 petal like sepals to each 'flower' then I agree it is probably a Hydrangea. There are ten's of varieties and most come in a white colour.

It looks like an Annabelle hydrangea to me too, though the flower cluster in your hand looks too small. Annabelles have a flower about the size of a grapefruit. At any rate it looks healthy and fine. No need to water; it's established. Give it benign neglect and enjoy!

It looks like an Annabelle Hydrangea to me. Go to some sites on flowering shrubs to see if you can find a picture. I hope this helps.

it is a hydrangea.....you have it potted therefore, don't over water...the bugs are the good guys that are attracted to the plant ..pinch off the flowers after blooming to start another set of blooms

This is a hydrangea. There are lots of cultivars, and several wild varieties. Here in Missouri, we have many that look something like this.

It sure looks like a hydrangea to me. Contrary to the opinion of one of the posters, there are white varieties.

This is a Viburnum called Summer Snowflake - please check it out on the following website! They are very easy to grow! Good luck and enjoy!

Where do you live?? That will help in identifying the bush.