I am looking to plant a small wildflower bed and want to put this in the 2nd row from the back with eleagnus bushes at the back row next to a cypress wood fence..
Difference in Forsythis Shrub and Bush
Forsythia has been hybridized into many different sizes. Shrub and bush are used interchangeably although some prefer bush for smaller shrubs. Elaeagnus pungens or thorny olive, silverthorn is a large shrub that suckers. http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=e622. Unfortunately, it has become invasive in US Southeast.
Forsythia is well-known for rooting and starting a new shrub where a branch touches the ground. One third of the oldest branches are removed annually to keep it blooming well. If you prefer less maintenance, check your state cooperative extension service website for recommendations on what shrubs work well in your climate and soil.