‘Blue Heaven’ Hydrangea is a blue flowering variety with large, bright blue flowers. It flowers on old and new wood and has a bushy habit. Flowering time is from summer to autumn. ‘Blue Heaven’ has a compact habit and becomes 60” tall and 50” wide. Plant ‘Blue Heaven’ in the sun or partial shade in a moist but well-drained soil. Pruning can be done from autumn to early spring. ‘Blue Heaven’ looks beautiful as a solitary on your terrace or patio but also in mixed containers and shrub borders. USDA Zone 6a.