Rhododendron 'Madame Masson' 7.5Ltr PotAlmost pure white bloom held against contrasting foliage. Rhododendron In Bloom: Spring Eventual Size: 2. 5m Position: Likes partial shade Rhododendron 'Madam Masson' is a great plant for impact with its spreading (although compact) habit and its large white bloom that makes an appearance during the spring. The foliage is a contrasting dark glossy green, and makes bloom stand out even more. The white bloom has some irregular yellow suffusion, but also