How to Identify Bigleaf Hydrangea Plant Varieties

Bigleaf hydrangeas, also known as Hydrangea macrophylla, are popular flowering shrubs prized for their large, showy blooms and versatile growth habits. With a wide range of cultivars available, identifying different varieties of bigleaf hydrangeas can be a fun and rewarding endeavor for plant enthusiasts. In this article, we will explore key features to look for when identifying different bigleaf hydrangea plant varieties.

Flower Color

One of the most prominent features that differentiate bigleaf hydrangea varieties is their flower color. Bigleaf hydrangeas typically produce large clusters of flowers in shades of pink, blue, purple, or white. The color of the flowers can vary depending on the pH level of the soil; acidic soils tend to produce blue flowers, while alkaline soils result in pink flowers.

Some common bigleaf hydrangea varieties and their typical flower colors include:

• ‘Nikko Blue’: Deep blue flowers
• ‘Endless Summer’: Pink or blue flowers (depending on soil pH)
• ‘Twist-n-Shout’: Deep pink or periwinkle blue flowers
• ‘All Summer Beauty’: Pink or blue flowers
• ‘Forever Pink’: Pink flowers

When trying to identify a specific bigleaf hydrangea variety based on flower color, take note of the shade and intensity of the blooms, as well as any unique patterns or variegations present.

Leaf Shape and Size

Another key characteristic to consider when identifying bigleaf hydrangea plant varieties is the shape and size of the leaves. Bigleaf hydrangea leaves are typically large, glossy, and prominently veined. However, there can be variations in leaf shape among different cultivars.

Some bigleaf hydrangeas have serrated or toothed edges on their leaves, while others may have smooth margins. Additionally, the overall size of the leaves can vary from compact and petite to large and robust. Pay attention to these leaf characteristics when trying to distinguish between different varieties.

Growth Habit

Bigleaf hydrangeas exhibit a range of growth habits, including compact mounding forms, upright shrubs, and climbing vines. Identifying the growth habit of a particular hydrangea variety can help narrow down your search.

For example, the popular ‘Endless Summer’ hydrangea is known for its compact, rounded growth habit that is well-suited for containers or smaller garden spaces. In contrast, ‘Alice’ hydrangea has a more upright and spreading growth habit, making it ideal for use as a focal point in larger landscapes.

Bloom Time and Duration

The timing and duration of blooming can also provide clues when identifying bigleaf hydrangea plant varieties. Some cultivars are known for their early bloomers that produce flowers in late spring or early summer, while others are late bloomers that extend the flowering season into fall.

Additionally, certain varieties may have a longer blooming period compared to others. For example, ‘Bailmer’ (marketed as Endless Summer) is prized for its ability to rebloom throughout the summer months, providing continuous color in the garden.

Unique Features

In addition to flower color, leaf characteristics, growth habit, and bloom time, many bigleaf hydrangea varieties have unique features that set them apart from one another. These can include variegated foliage, double or lacecap flower forms, compact growth habits, and improved disease resistance.

For example, ‘Cityline Paris’ is known for its compact size and vibrant red stems, while ‘Blue Enchantress’ features striking deep purple stems and rich blue flowers. By familiarizing yourself with these unique features, you can better identify and appreciate the diversity within the world of bigleaf hydrangeas.

Conclusion

Identifying different varieties of bigleaf hydrangeas can be an enjoyable and educational experience for gardeners and plant enthusiasts alike. By paying attention to key features such as flower color, leaf shape and size, growth habit, bloom time and duration, and unique characteristics, you can become adept at distinguishing between various cultivars within this beloved species.

Whether you’re looking to expand your collection of bigleaf hydrangeas or simply want to better appreciate the diversity within this plant group, taking the time to identify different varieties can deepen your understanding and enjoyment of these beautiful flowering shrubs. So next time you encounter a bigleaf hydrangea in bloom, put your newfound knowledge to use and see if you can pinpoint its variety based on its distinctive features. Happy gardening!