WebJul 12, 2024 · If your soil is alkaline and you want blue flowers, which require a soil below 6.0, it might take one year or more to gradually acidify the soil. If your soil is already in the neutral pH spectrum, around 7.0, soil acidification happens faster and you might see blue flowers in the same season. WebMar 18, 2024 · Hydrangeas color change is affected and determined by the soil pH . If your soil is more alkaline, then your hydrangeas will be pink or pinker. Alkaline soils, with a pH approximately from 7 – 9, generally contain clay. If your soil is more acidic, pH around or less than 5.5, then your blue hydrangeas stay blue or bluer.
Growing Blue Hydrangeas - Hydrangea Colors Gardener
WebMar 21, 2024 · The first thing you need to know is that to encourage blue flowers you need to have a soil pH between 5.2 and 5.5. You can apply a soil acidifier to lower the pH you can also lower it gradually and naturally by applying acidic organic mulch like conifer clipping or pine needles. If the soil you have is naturally quite alkaline, it is probably ... WebHydrangeas love an acidic soil with a pH level of five to seven. This provides the acidic balance needed to keep hydrangeas healthy. By adding aluminum sulfate to soil, the chemical reaction of aluminum sulfate in soil with a five to seven level of pH turns flowering hydrangeas a lovely shade of blue. grad cross f
How to make hydrangeas blue Home for the Harvest
WebJul 16, 2024 · Since we are going after blue flowers, you need your soil’s pH level to be at 5.5 or lower. For pink flowers, the plants need neutral to alkaline soils (pH 6.5 and higher). For purple color (or a mix of blue and pink flowers on the … WebTo turn your hydrangea flowers blue, lower the soil pH to 6.0 or lower. You can do this by purchasing a soil acidifier plant fertilizer to feed your hydrangeas every one to two weeks. … WebApr 18, 2024 · Change the pH, change the color! If your hydrangeas are pink (meaning your soil is alkaline) and you want them to turn blue, make the soil more acidic by adding … grad cylindrical coordinates