Endless Summer Hydrangea is a small deciduous shrub and has serrated dark green leaves with no fall color. Its mophead flowers bloom in waves through summer on both new and old wood with color that depends on the soil PH -acidic soils produce sky blue flowers, while alkaline soils produce pink flowers that darken to pink-blue with maturity. The flowers attract butterflies and pollinators . Best bloom in partial sun and rich, moist well-drained soils. The Endless Summer series has improved disease resistance. At a glance Botanical name: Hydrangea macrophylla 'Bailmer’ Plant type: Shrub Light: Part Sun Mature size: 3' - 5' high × 3' - 5’ wide Spacing: 4’ Hardiness: Zones 5 - 9 Bloom colour: Blue (acid), Pink (Alkane) Season of interest: Summer In the garden Accents or Group Plantings, Borders, Woodland Gardens, Foundation Plantings, Hedges, Containers. Pairs well with: Deutzia, Dogwood, Hosta.