Do Hydrangeas Like Acidic Soil

A: Not only do your gardenias and hydrangeas demand acidic soils, they will die if they do not have an acidic soil (pH 5-6 minimum) WHICH ACIDIC FERTILIZER CAN NEVER FULLY FURNISH. … This mixture can also be used in containers for growing azaleas, gardenias or hydrangeas.

How do I make my soil more acidic for hydrangeas?

Soil can be made more acidic by adding Soil Acidifier, ammonium sulfate or aluminum sulfate. Follow application rates on the packaging. You can also lower pH levels by incorporating naturally acidic organic materials such as conifer needles, sawdust, peat moss and oak leaves. Coffee grounds are also slightly acidic.

Will Epsom salts make hydrangeas blue?

Epsom salt is already hydrated and does not pull water from nearby materials. When the ions of Epsom salt disassociate, they have a neutral effect on the pH of the soil. Since the blue color of a hydrangea is formed by aluminum made available in acid soil, adding Epsom salt would not make your flowers change color.