Since no one is answering I,ll take a stab at it. I noticed a web sight that sells that years cuttings is advertising them to be at least four inchs height. I bought a hydrangea(Glowing Embers) that was a this season cutting and its now about 10/12 inchs high. But I think alot depends on the growth habit of the plant. I purchased another hydrangea plant(Forever&Ever) as a cutting this year and its only grown a few inchs this whole season.

The greenhouse I drove for a few years back grew thousands. By the fall they had reached perhaps 6 to 7 inches. The variation came in the branching rather than height. In the fall they were de-leafed and sorted from one bloom to five blooms and over and stored in coolers at 39 degrees Fahrenheit. Once they were returned to the warmth of the greenhouse after Christmas they grew fantastic. The five bloom and above reached at least 2 feet high by the shipping time.

Today while walking I saw 2 Nikko Blue Hydrangeas in gallon pots out for the garbage man, I took those home in a hurry. They'll look just dandy next spring I hope.

Thank you both for your help, i think they will grow a little too slow for what i need them for. Im sure i can find them pretty cheap for my needs! Thanks!