How do I make my hydrangeas blue?
Table of Contents
- How do I make my hydrangeas blue?
- Are blue hydrangeas rare?
- What product turns hydrangeas blue?
- Why are my hydrangeas so blue?
- Why are my blue hydrangeas turning purple?
- Do Epsom salts turn hydrangeas blue?
- Why are my blue hydrangeas turning green?
- What's the difference between pink and blue hydrangeas?
- What kind of soil does a blue hydrangea need?
- Why are the flowers on my hydrangeas turning blue?
- Can a hydrangea be made blue with vinegar?
How do I make my hydrangeas blue?
To turn new hydrangeas blue, use 1¼ cups of Espoma Organic Soil Acidifier. Or to transform established hydrangeas into blue beauties, apply 2½ cups of Organic Soil Acidifier. Spread evenly around the hydrangea out to its drip line, or the widest reaching branches. Then, water well.
Are blue hydrangeas rare?
Hydrangeas that are blue are not necessarily better than pink ones. But the color is so rare–”hydrangea blue” is not a hue that belongs to any other plant or any other anything in the world–that that how could you not want a splotch of it growing against your picket fence?
What product turns hydrangeas blue?
aluminum sulfate Blue hydrangeas bloom in acidic soils, usually with a pH of 5.5 or less. The easiest way to acidify your soil and turn those babies blue is with aluminum sulfate, which can be found at almost any garden center.
Why are my hydrangeas so blue?
You see, for most French hydrangeas (Hydrangea macrophylla), the flower color indicates the pH of the soil. In strongly acid soil (pH below 6), flowers turn blue. In alkaline soil (pH above 7), flowers turn pink or even red. ... To make it more alkaline, do the same with ground lime.
Why are my blue hydrangeas turning purple?
Generally speaking, acidic soil, with a pH lower than 6.0, yields blue or lavender-blue hydrangea blooms. ... With a pH between 6 and 7, the blooms turn purple or bluish-pink. To lower your pH, add garden sulfur or aluminum sulfate to your soil.
Do Epsom salts turn 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.
Why are my blue hydrangeas turning green?
They're sepals, the part of the flower that protects the flower bud. Why do hydrangeas bloom green? Because that's the natural color of the sepals. As the sepals age, the pink, blue, or white pigments are overpowered by the green, so colored hydrangea blossoms often fade to green over time.
What's the difference between pink and blue hydrangeas?
Understanding the Science Know that blue hydrangeas grow in acidic soil, while pink hydrangeas grow in alkaline soil. Hydrangeas are rather unique garden plants because of their ability to change color according to the pH level of your soil. Test the pH level of your soil.
What kind of soil does a blue hydrangea need?
Soil with a pH lower than 5.5 will result in bright blue hydrangea flowers. When the pH is 5.5 to 6.5 the flowers will be an odd purple color. Soil with a pH higher than 6.5 will cause the flowers to be pink. 3
Why are the flowers on my hydrangeas turning blue?
Acidic soils have a high aluminum content, turning the flowers blue. An alkaline soil will produce pink blooms in hydrangeas; an acid soil will cause the same plant to bear blue flowers. The exception to this is white or green hydrangeas, which are unique varieties and don’t change color.
Can a hydrangea be made blue with vinegar?
There are many other things to remember about how to make blue hydrangeas with vinegar, but the one thing that you should focus on is that you should know what you are getting when you are growing this type of plant.