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Best grown in rich, medium moisture, well-drained soils in part shade. Tolerates full sun only if grown in consistently moist soils. Soil pH affects the flower color of most cultivars except white (blue in highly acidic soils and lilac to pink in slightly acidic to alkaline soils). Add aluminum sulfate to the soil to make the flowers bluer or add lime to the soil to make the flowers pinker.
Everlasting® 'Revolution' Mophead Hydrangea delivers a medley of colorfully blended blooms to the summer garden. Expect to see varying shades of pink, purple and blue (depending on your soil type) flowerheads on this compact shrub, all highlighted with bright green accents. 'Revolution' is a heavy bloomer that was bred to produce extra-sturdy stems, making it an excellent choice for cut flowers. Container friendly. (Hydrangea macrophylla)
Prefers part shade
Acid soils (with a pH below 7) produce purple-to-blue blooms, with the brightest blue blooms resulting from the most-acidic soils. To coax your hydrangeas into producing blue blooms, you can amend your soil with sulfur, or mulch your plants with a pine and/or cedar needle mulch.
Alkaline soils (with a pH above 7) produce pink blooms. The more alakaline (or sweet) your soil is, the deeper pink your blooms will be. This can be achieved by adding lime around your planting area. It is, however, more difficult to turn hydrangea blooms pink because as a general rule, most plants struggle to be healthy in soils with a pH above 7.