Have you checked local nurseries? Their stock may go up as we closer to May and the danger of late frosts has passed in most locales.

Definitely agree with luis..the local nurseries should have the hydrangea in stock after the danger of late frosts...for my area in central Jersey - it's the second week of May...the local nurseries should get you a very healthy size plant..if you are really really really rushing and want to have one now - go for a place like Sooner Plant Farms (go for their 3-yr old plants)..the shipping cost for a big plant like that will be significant...but that's the cost you pay for not waiting the local stock...another place I have good experience with online purchases is Hydrangea Plus...very healthy size plants and cheaper in shipping because they dig out the rootball and ship that to yoo w/o the gallon pots (you will need to put the plant into the ground or the container immediately)...Annabelle should tolerate the cold winter in your zone...it is a reliable performer for my garden for the last 5 yrs...while you at it, the new Annabelle - Incrediball is very short supply and high demand this yr...this is one of those plants you can get in a few places only and being sold in small trade gallon size pots (with one or two stems)...if you nurse them well, they could put on quite a show for you in 2010.

I saw these at Steins today in Kenosha. They also have stores in Racine & Milwaukee area.