Hydrangea Serrata Diadem

Description

Hydrangea Serrata Diadem is a deciduous shrub that belongs to the Hydrangeaceae family. It is native to Japan and Korea and is commonly grown as an ornamental plant in gardens and landscapes. This shrub blooms during the summer and produces beautiful clusters of pink or blue flowers that can last for several weeks. The plant has a compact growth habit and can reach a height and width of up to 3 feet.

Taxonomic Information

Appearance

The leaves of Hydrangea Serrata Diadem are oval-shaped with serrated edges and can grow up to 4 inches long. The flowers are produced in large clusters and can be pink or blue depending on the pH of the soil. The plant has a mounding growth habit and can reach a height and width of up to 3 feet. The bark of the plant is brown and has a peeling texture.

Care Guide

Hydrangea Serrata Diadem requires regular watering and fertilization to grow healthy and produce beautiful flowers. The plant prefers well-drained soil and partial shade to full sun exposure. It is hardy in USDA zones 5-8 and can tolerate cold temperatures. To ensure your plant thrives, follow these guidelines:

• Water regularly, keeping the soil moist but not waterlogged.
• Fertilize in the spring with a balanced slow-release fertilizer.
• Plant in well-draining soil and avoid overwatering.
• Provide partial shade to full sun exposure.
• Protect from cold temperatures by mulching around the base of the plant.

Common Pests & Diseases

Hydrangea Serrata Diadem is susceptible to a few pests and diseases. The most common ones are:

• Spider mites – These tiny pests can cause yellowing and browning of the leaves. Treat with insecticidal soap.
• Leaf spots – This fungal disease can cause brown or black spots on the leaves. Remove infected leaves and treat with a fungicide.
• Powdery mildew – This fungal disease can cause a white powdery coating on the leaves. Treat with a fungicide.

Habitat

Hydrangea Serrata Diadem is native to Japan and Korea and is commonly grown in gardens and landscapes in temperate regions around the world. It prefers well-drained soil and partial shade to full sun exposure. This plant can be grown in containers or in the ground and is a great addition to any garden or landscape.

Question and Answer

Here are some common questions and answers about Hydrangea Serrata Diadem:

• Q: When should I prune my Hydrangea Serrata Diadem?
• A: Prune your plant in the late winter or early spring before new growth appears.
• Q: Can I grow Hydrangea Serrata Diadem in a container?
• A: Yes, this plant can be grown in a container as long as it has well-draining soil and sufficient space.
• Q: How can I change the color of my Hydrangea Serrata Diadem’s flowers?
• A: You can change the color of the flowers by adjusting the pH of the soil. For blue flowers, add aluminum sulfate to the soil. For pink flowers, add lime to the soil.
• Q: How often should I fertilize my Hydrangea Serrata Diadem?
• A: Fertilize in the spring with a slow-release balanced fertilizer and again in the summer with a high-phosphorus fertilizer to promote blooming.

Related Plants

Here are some related plants to Hydrangea Serrata Diadem:

• Hydrangea macrophylla
• Hydrangea paniculata
• Hydrangea quercifolia
• Hydrangea serrata

References

• Dirr, M. A. (2004). Hydrangeas for American gardens. Timber Press.
• Gardening Know How. (2021). Hydrangea serrata: How to grow and care for mountain hydrangeas. Retrieved from https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/mountain-hydrangea-care.htm
• RHS. (2021). Hydrangea serrata ‘Diadem’. Retrieved from https://www.rhs.org.uk/Plants/124892/Hydrangea-serrata-Diadem-(PBR)/Details