The Hydrangea Macrophylla Blue, also known as the Bigleaf Hydrangea, is a classic summer-flowering shrub loved for its dramatic flower heads and lush green foliage. This variety is especially prized for its ability to produce bold blue blooms when planted in acidic soil. At Plants by Post, we supply these hardy perennials in large 3L pots, ensuring each plant is well-rooted and ready to thrive in UK gardens upon arrival.
This hydrangea is grown in British nurseries using high-quality, nutrient-rich growing medium to promote strong root systems and healthy top growth. The vibrant blue hue is influenced by soil acidity, lower pH (acidic) soil enhances the blue tones, while more alkaline soils may shift the colour to pink or purple. Gardeners can adjust soil conditions by adding aluminium sulfate or using hydrangea colourant for more intense blue shades.
Hydrangea Macrophylla features deep green, slightly serrated foliage that forms a lush mound, adding structure and visual interest even before flowering begins. From mid-to-late summer, large, mophead-style blooms begin to open, providing a showstopping focal point in garden beds, borders, or large containers. These flowers are also popular for cutting and drying, offering additional versatility for floral arrangements.
Your Hydrangea Macrophylla Blue will arrive in a well-rooted 3L pot, measuring approximately 25–30 cm in height upon delivery. Once established, the shrub can reach up to 1.2 metres (4 feet) in height and spread, making it an excellent choice for medium-sized garden borders, decorative beds, or statement pots.
The flower heads can grow to 15–20 cm across, creating a full, mophead display that holds its shape well throughout the summer months. Its deep green foliage provides a dense, leafy background that helps the vibrant blooms stand out even more.
This size is ideal for gardeners looking for instant impact, large enough to plant directly into the garden, yet compact enough to establish quickly. The 3L pot ensures the roots are well developed, helping your plant thrive from the moment it's in the ground.
