This Paul's Scarlet English Hawthorn used to be offered by nurseries in the Midwest, Mid-Atlantic, and Northeast USA from the 1960's into the 1980's, but was largely dropped because it was so susceptible to the Hawthorn Leaf Spot or Blight, Entomosporium maculatum, that caused it to mostly defoliate most years by July or August. It would normally bloom well in late May or early June with plenty of pink flowers and leaves, but the fungus had invaded the foliage during the wetness of early spring and would cause almost total leaf loss in summer. Back in Europe I am sure it does perfectly fine.