How Big Do Peonies Get: A Complete Gardener’s Guide

How Big Do Peonies Get?

Peonies can vary in size depending on the type, with most peonies reaching a height and width of at least 3 feet at maturity.

Tree peonies can have different growth habits, with upright forms ranging from 4.5 to 7 feet tall, spreading forms typically 2.5-3 feet tall and 3-5 feet wide, and semi-spreading forms between 3-4 feet tall and 3-5 feet wide.

Herbaceous peonies can range from 1 to 2.5 feet tall, with some remaining small plants.

Cultivated varieties of P.

lactiflora are generally 3.5 feet tall and wide, while hybrid herbaceous peonies can be between 2.5 to 4.5 feet tall and wide.

Intersectional or ‘itoh’ hybrid peonies grow to 3-4 feet tall and wide.

Key Points:

  • Most peonies reach a height and width of at least 3 feet at maturity.
  • Tree peonies can range from 4.5 to 7 feet tall, with spreading forms typically 2.5-3 feet tall and 3-5 feet wide.
  • Herbaceous peonies can range from 1 to 2.5 feet tall, with some remaining small plants.
  • Cultivated varieties of P. lactiflora are generally 3.5 feet tall and wide.
  • Hybrid herbaceous peonies can be between 2.5 to 4.5 feet tall and wide.
  • Intersectional or ‘itoh’ hybrid peonies grow to 3-4 feet tall and wide.

Did You Know?

1. The largest peony bloom on record boasted a whopping diameter of 12 inches (30.5 cm) and weighed over a pound (0.45 kg)!
2. Peonies have been cultivated in China for over 2,000 years and are considered a symbol of prosperity, honor, and beauty in Chinese culture.
3. The fragrance of peonies can be highly diverse, ranging from sweet and floral to spicy and even citrus-like.
4. Peonies have long been used in traditional medicine to alleviate pain, inflammation, and menstrual disorders.
5. The world record for the oldest peony plant still in existence is an impressive 1,300 years old! It can be found in Luoyang, China, where peonies are a national treasure.

Average Size Of Peonies At Maturity

Peonies: Known for their stunning blooms and bushy foliage, peonies make a striking statement in any garden or landscape. With an average height and width of at least 3 feet at maturity, these plants boast robust growth and beautiful flowers.

In addition to their size, it’s important to consider the different varieties and forms of peonies. Two commonly known types are:

  • Tree Peonies: These peonies have their own unique growth pattern and dimensions. They typically have woody stems and can grow into small trees, reaching heights of up to 5 feet or more. Their flowers come in various colors, including pink, yellow, and white.

  • Herbaceous Peonies: These peonies have a more traditional growth habit. They die back to the ground each winter and regrow in the spring. Herbaceous peonies come in a wide range of flower forms and colors, from single to double blooms and shades of red, pink, and white.

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By considering the different types of peonies available, you can choose the variety that best suits your garden’s needs and aesthetic preferences.

Note: Peonies are a popular choice for garden enthusiasts due to their impressive size and captivating flowers. Keep in mind that proper care and maintenance are crucial to ensure healthy growth and abundant blooms.

Growth Habits Of Tree Peonies

Tree peonies, also known as Paeonia suffruticosa, are woody shrubs that can add a sense of elegance to any outdoor space. They have different growth habits that contribute to their unique beauty:

  • Upright form: These majestic plants can reach a towering height of 4.5 to 7 feet. With their strong and sturdy stems, they create a striking focal point in the garden. The large and showy flowers they bear make them a sight to behold.

  • Spreading form: On the other hand, spreading form tree peonies are usually around 2.5-3 feet tall and 3-5 feet wide. Their graceful and cascading branches give them a sprawling appearance, adding a touch of elegance to any landscape.

  • Semi-spreading form: Falling between the dimensions of the upright and spreading forms, semi-spreading tree peonies typically grow to be 3-4 feet tall and 3-5 feet wide. This balanced growth pattern makes them ideal for creating a visually appealing display.

Tree peonies come in different forms, each with its own unique charm and characteristics. Their stunning beauty and diverse growth habits make them a valuable addition to any outdoor space.

  • Upright form tree peonies can reach a height of 4.5 to 7 feet.
  • Spreading form tree peonies are typically around 2.5-3 feet tall and 3-5 feet wide.
  • Semi-spreading form tree peonies fall between these two dimensions, typically growing to be 3-4 feet tall and 3-5 feet wide.

Dimensions Of Different Tree Peony Forms

Tree peonies are slow-growing plants that require patience and care. It can take 10 to 15 years for them to reach their mature size. However, the wait is worth it because of their remarkable growth and the abundance of blooms they produce.

The dimensions mentioned earlier give you an idea of what to expect at maturity. Upright form tree peonies reach the tallest heights, while the spreading and semi-spreading forms have a more compact and wider growth pattern.

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Whether you choose an upright, spreading, or semi-spreading form, tree peonies offer a unique and captivating presence in any garden. Their stunning flowers, combined with their overall size and shape, make them a favorite among garden enthusiasts.

Size Of Herbaceous Peonies

Unlike tree peonies, herbaceous peonies, also known as Paeonia lactiflora, die back to the ground in winter and regrow from the roots each spring. They are herbaceous perennials with varied growth habits and sizes.

The height of herbaceous peonies can range from 1 to 2.5 feet. Some varieties, like P. japonica, remain relatively small, making them suitable for smaller gardens or containers. Others, such as P. macrophylla, can grow up to 3 feet wide, providing a more substantial presence in the landscape.

Cultivated varieties of P. lactiflora are generally 3.5 feet tall and wide. These versatile plants have a perfect balance between height and width, making them easy to incorporate into different garden designs.

Hybrid herbaceous peonies offer even more options in terms of size. They can range from 2.5 to 4.5 feet tall and wide, allowing you to choose the perfect fit for your garden and personal preferences.

Intersectional or ‘itoh’ hybrid peonies are a unique cross between tree and herbaceous peonies. They grow to be 3-4 feet tall and wide, with a combination of characteristics from both parents. These hybrids offer an exciting opportunity to experience the best of both worlds.

Sunlight And Care Requirements For Peonies In USDA Zones 4-9

Peonies thrive in USDA hardiness zones 4 to 9, enjoying the temperate climates found in these regions. To ensure healthy growth and abundant blooms, it is essential to provide them with adequate sunlight and care.

  • Peonies require at least 5-6 hours of direct sunlight per day. This allows the plants to photosynthesize effectively and produce the energy needed for growth. Planting them in a location with full sun exposure will facilitate their optimal development.
  • In terms of care, peonies benefit from well-drained soil and regular watering. It’s important to avoid overwatering, as excessive moisture can lead to root rot and other diseases. Mulching around the base of the plants can help retain moisture and regulate soil temperature.
  • Pruning is also an essential aspect of peony care. In late autumn, after the foliage has died back, you can cut down the peonies to the ground. This helps prevent disease and promotes healthy regrowth in the spring.

“Peonies come in a variety of sizes and forms. From the extravagant tree peonies to the delicate herbaceous varieties, there is a peony for every garden.”

By understanding the average size, growth habits, and care requirements of these plants, you can make informed decisions for your garden and enjoy their beauty for years to come.

  • Peonies thrive in USDA hardiness zones 4 to 9.
  • Provide them with at least 5-6 hours of direct sunlight per day.
  • Use well-drained soil and avoid overwatering.
  • Prune peonies in late autumn to promote healthy regrowth.
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Frequently Asked Questions

How big does a peony get?

Peonies can grow to be quite impressive in size, typically reaching a minimum height and width of 3 feet once they reach maturity. It is crucial to provide ample space for them to grow and expand. Utilizing a support cage can effectively maintain the upright position of the flowers, ensuring their beauty is not hindered by flopping stems.

Do peonies like full sun or shade?

While peonies are hardy plants that can tolerate different growing conditions, it is essential to provide them with ample sunlight to thrive. Peonies prefer full sun exposure, meaning they should be planted in an area that receives at least five to six hours of direct sunlight per day. This encourages optimal growth, abundant blooms, and overall plant health. So, when deciding where to plant your peonies, be sure to choose a sunny spot in your garden that allows these beautiful flowers to bask in the sunlight they love.

How tall is a full grown peony?

At full maturity, a peony plant can reach a height of approximately 3-4 feet and spread out to about 3-5 feet wide. This growth habit is observed in various cultivar groups of tree peonies, which also include some varieties that display a semi-spreading growth habit. These dimensions make peonies an impressive addition to any garden, offering a significant vertical presence while also expanding horizontally with their attractive foliage.

Are peonies easy to grow?

Peonies can be a joy to grow, contrary to popular belief. As long as the fundamentals are met, they flourish effortlessly. Adequate water supply is crucial, but be cautious not to overwater and cause waterlogging. Opt for well-draining soil, including clay as long as it doesn’t retain excessive moisture. With these simple considerations, peonies can thrive with ease.

References: 1, 2, 3, 4

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