Hydrangea macrophylla ‘Blue Heaven’ - PP18823
Ard van Klaveren from The Netherlands
Electric Blue or pink depending on soil acidity
Hardy in USDA zones 5 through 9
Very large 12", mophead flowers comprised of individual single flowers
Spring to Fall
Large lustrous, deep green leaves
4' tall, 3' wide
Upright habit
Ideal for containers, flower bed features, shrub borders, and landscape accents. Blooms in northern areas where many other hydrangeas typically do not perform well.
Does best in well-drained soil with good organic matter; prefers slightly acidic soil; avoid heavy clay with poor drainage
Morning Sun and Afternoon Shade
Controlled release fertilizer (10-10-10) is recommended in spring
Under severe disease conditions, plant can develop powdery mildew; leaf spot can also be a problem late in the season
Generally pest free