The Proven Winners hydrangeas available this week are the same sorts we offer later in the season. One of the nurseries from which we buy annuals at this time of year is a Proven Winners shop who also grows some PW perennials in 1 gallon pots... which is pretty small for an eventually large shrub like a Hydrangea. If you’re looking for bigger shrubs, we think you’ll be happier buying later in the year. Come May or June we’ll offer many of those exact same varieties in bigger sizes, and at better prices on a pound-for-pound basis!
The Hydrangeas marked as “Greenhouse Grove” and available for April are typically florist hydrangeas which may well not be hardy in the Chicago area’s winter cold. They were likely forced (to be further ahead than they’d normally be early in the year) and are meant for fancying up early season containers.