Take samples to your local cooperative extension service and they will identify it for you. Take many samples, like a handful of grass (with roots), from several areas to be sure you are sampling the different types that might be in your mix.

The description you gave could fit dozens of hydrangeas. Any chance you could post a picture and elaborate on it's characteristics?......yg

Sadie Ray is noted for its hardiness and will bloom pink or blue, depending on the soil pH. Here's what Sandusky Valley nursery says about it: Hydrangea macrophylla  Sadie RayÂ. Here is the most reliable hydrangea available. It was discovered in northern Indiana where it has bloomed for over 50 years. Northern Indiana is zone 5 and has quite cold winters yet this plant comes back and blooms every year. Probably the best hydrangea for zone 5. A good selection for colder areas where other hydrangeas fail to bloom.Blooms will be pink or blue depending on soil pH. Flowers are similar to Nikko Blue. It should be planted in good soil with some peat moss added to increase vigor and kept watered especially in the south. It can grow in full sun or half shade and should be grown in some shade in the south. This plant can grow 3-5 feet tall and is hardy from zone 5-9. I recommend first winter protection in zone 5. A rose cone does well for this purpose. Planting on a southern exposure also helps in zone 5. Winter protection is less important for this variety but it wouldnÂt hurt for the first season. We're colder than Zone 5 here. I planted my Sadie Ray last year, and the only protection I gave it was protection from deer and rabbits: I surrounded it with chicken wire for the first year. I'm very impressed with its growth and bloom. It was the first to appear in early spring, but all its nice new growth was killed off by a freeze in June. So it just started all over again. I'm very happy with it.

It s a bigleaf hydrangea, Hydrangea macrophylla and appears to have modified lacecap flower. But which specific cultivar it may be will be very difficult to ascertain with any certainty. Greenhouse grown plants forced into bloom out of season - as this one has - generally do not display the same characteristics as those grown in the ground in a suitable climate. And there are literally hundreds to choose from. The 'suitable climate' poses issues for you :-) Understandably this is not a plant that will tolerate your climate out of doors. But that does not necessarily make it a good choice for a houseplant, either. Most 'houseplants' are tropical or semitropical plants that cannot tolerate colder seasonal conditions of the more temperate areas of the globe and do not require a period of dormancy triggered by day length and colder temperatures. And most are evergreen as well. The hydrangea doesn't fit any of these qualities. It is deciduous, requires a dormancy and vernalization period to thrive and produce flowers and is native to mountainous areas of Japan, so neither tropical or even semitropical :-) And so is not very happy indoors for any extended length of time - too warm (too even a temperature), too dry (low humidity) and while it will tolerate lower light levels, needs some sunlight to produce blooms. The best I can suggest is too keep it in the coolest location indoors with bright but indirect light and keep the soil mix evenly moist but not wet. But don't plan on having it for "years to come". Lack of a dormant period and proper vernalization will eventually kill it. Even in my significantly cooler and more distinctly seasonal climate, indoor flowering hydrangeas last at best a few months unless transitioned to the outdoors.