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Pee Gee HydrangeaHydrangea paniculata 'Grandiflora'

  • Pee Gee Hydrangea bush - Hydrangea paniculata
  • Pee Gee Hydrangea - Hydrangea paniculata
  • Pee Gee Hydrangea

This is the most common H. paniculata form. It can be grown either as a large shrub or small tree, and it is known for its large panicles of white flowers. In fact, with some good pruning, this shrub can produce flower clusters measuring up to 12-18" in length!

To train as a single-stemmed tree: Select the straightest and strongest stem to use as the trunk. Stake the stem. Prune out additional stems, leaving 3–4 branches on the upper ¼ of the plant. Every spring, remove branches from the bottom ¾ of the plant and prune the top to a desired shape.

Hardiness Zones

The pee gee hydrangea can be expected to grow in Hardiness Zones 3–8. View Map

Tree Type

This is a flowering shrub, typically planted for its profusion of flowers.

Mature Size

The Pee Gee hydrangea grows to a height of 10–20' and a spread of 10–20' at maturity.

Growth Speed Fast Growth Rate

This shrub grows at a fast rate, with height increases of more than 24" per year.

Sun Preference

Full sun and partial shade are best for this shrub, meaning it prefers a minimum of 4 hours of direct, unfiltered sunlight each day.

Soil Preference

The Pee Gee hydrangea grows in acidic, loamy, moist, rich, sandy, silty loam, well-drained and clay soils.


This shrub:
  • Produces large panicles of white flowers that turn purplish-pink throughout the summer. The panicles are normally 6-8" long but can reach up to 12-18" if the plant is thinned to 5–10 shoots.
  • Features medium to dark green leaves that are 3–6" long with serrated margins. In the summer, the foliage has a tinge of luster.
  • Adapts to a wide range of climates.
  • Grows in a rounded shape.
  • Can be pruned into a small flowering tree.


This form was introduces from Japan in 1862.