Maintenance Landscaping Design

Hydrangea paniculata grandiflora is a beautiful, flowering shrub that is native to eastern Asia. The plant can grow up to 15 feet tall and wide, and its flowers range in color from white to pink to purple. The plant is popular in gardens and as a potted plant, and it is easy to care for.

Also known as

• Peegee hydrangea
  
• French hydrangea
  
• Snowball hydrangea
  
• Panicle hydrangea
  
• Grandiflora hydrangea

Common Knowledge

• Hydrangea paniculata grandiflora is a species of flowering plant in the Hydrangea family, native to southern and central China.
  
• It is a deciduous shrub growing to 3–6 m (8–17 ft) tall and wide, with large, showy flower heads.
  
• The flowers are produced in summer, eachRAY FLOWERS WHITE 4-5" diameter, composed of four to seven white ray florets surrounded by 12–25 smaller white disk florets.
  
• The fruit is a small, dry, brown capsule.
  
• The leaves are opposite, simple, and broadly ovate to triangular, 6–12 cm (4–7 in) long and 3–8 cm (2–1 in) broad, with a serrated margin.
  
• The plant is widely cultivated as an ornamental shrub in temperate regions.
  
• Grandiflora is a Latin word meaning "large-flowered".
  
• Paniculata is a Latin word meaning "paniculate" or "having panicles".
  
• Hydrangea paniculata grandiflora was first described by Carl Peter Thunberg in 178
  
• The specific epithet grandiflora is often misspelled as "grandiflora" or "grandiflorum".

Related plant:
Hydrangea Paniculata Diamant Rouge

How to Grow

1. For hydrangea paniculata grandiflora, first step is to choose a planting location. It is best to choose an area that gets full sun to partial sun.
   
2. Next, prepare the planting area by removing all weeds and grasses. It is also important to loosen the soil to a depth of 12 inches.
   
3. Once the planting area is prepared, you will need to dig a hole that is twice the width and depth of the root ball of your plant.
   
4. After digging the hole, it is time to backfill it with a mixture of topsoil and compost.
   
5. Once the hole is filled, you can gently place your plant in the hole. It is important to make sure that the root ball is level with the surrounding soil.
   
6. After placing your plant in the hole, you will need to fill in the hole with the same mixture of topsoil and compost.
   
7. Once the hole is filled, you will need to firm the soil around the plant.
   
8. After firming the soil, you will need to water the plant deeply.
   
9. Once the plant is watered, you will need to mulch around the plant to help retain moisture.
   
10. Lastly, you will need to monitor the plant and water as needed.

Related plant:
Hydrangea Paniculata Phantom

The Soil

About soil condition, hydrangea paniculata grandiflora likes a rich, well-drained soil with plenty of organic matter. If the soil is too heavy, the plant may not flower as well. It also needs a moist but not wet soil to do well.

About light

So, like the other hydrangeas, the Hydrangea paniculata grandiflora requires lots of sun to thrive. This means that it should be planted in an area that gets at least six hours of sunlight per day. If possible, choose a spot that gets morning sun and afternoon shade, as this will protect the plant from the hottest sun of the day.

The Temperature

The temperature condition is ideal for the growth of hydrantula paniculata grandiflora. The plant grows best in moist, well-drained soil in full sun to part shade. It is heat tolerant and does well in hot, humid summers. It can be grown in USDA hardiness zones 4 to 8.

Humidity Requirement

Ideal humidity condition for this plant is 50%-70%. If the humidity drops below 50%, the leaves will start to wilt and the flowers will start to droop. If the humidity gets too high, the leaves will start to yellow and the flowers will start to brown.

The Fertilizer

About fertilizer, this kind of plant need much more than other kinds of plants, because it will result in a large and healthy plant. For the roots, they are very shallow, so be careful not to overwater.

About light

Pruning is a critical step in the care of your Hydrangea paniculata grandiflora. The best time to prune is in late winter or early spring, before new growth begins. Cut back the stems that flowered the previous year to 2-3 buds. This will encourage strong new growth and lots of flowers.

Plant Propagation

Propagation is best done in late summer or early fall. Cuttings should be taken from new growth that has not yet flowered. The cutting should be about 6 inches long and include several leaves. Strip the lower leaves off the cutting and dip the cut end in rooting hormone. Plant the cutting in a pot filled with moistened potting mix and place in a bright, but not direct, location. The cutting should root within 4 to 6 weeks. Once rooted, the plant can be transplanted to a larger pot or into the garden.

Growth Speed

Usually, the plant growth rate between 2 to 4 feet annually. However, newly planted hydrangea may only grow 1 foot the first year. This is normal as the plant is still adjusting to its new environment. Once established, you can expect excellent growth from your hydrangea paniculata grandiflora.

Common Problems

Common problems for this kind of plant are powdery mildew, bud blast, and leaf spots. Powdery mildew is a white, powdery fungus that appears on the leaves and stems of the plant. Bud blast is a condition that causes the flower buds to turn black and fall off the plant. Leaf spots are small, dark spots that appear on the leaves of the plant.

Growing Tips

• Make sure to plant your hydrangea paniculata in an area with well-drained, moist soil.
  
• Be sure to provide plenty of space for your plant to grow, as it can reach up to 6 feet in height and width.
  
• Prune your plant regularly to encourage new growth and to keep it from becoming too leggy.
  
• Hydrangea paniculata grandiflora prefers full sun to partial shade, so be sure to plant it in an area that receives at least 6 hours of sunlight each day.
  
• Water your plant regularly, especially during periods of drought.
  
• Fertilize your hydrangea paniculata grandiflora regularly using a balanced fertilizer.
  
• Protect your plant from strong winds, as they can cause the flowers to become damaged.
  
• Be on the lookout for pests and diseases, and treat them promptly if found.
  

Substitution

• Grandiflora
  
• Pompom
  
• snowball
  
• Oakleaf
  
• Mophead
  
• Serrata
  
• Macrophylla
  
• Hortensia
  
• Quercifolia
  
• Arborescens

Source:
Hydrangea paniculata | Landscape Plants | Oregon State University
Hydrangea Paniculata Grandiflora | Digital Collections
Growing Hydrangeas - Center for Agriculture, Food, and the …