What to put on hydrangeas to make them blue?

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. Mix ¼ oz aluminum sulfate with a gallon of water and soak the soil surrounding your hydrangeas in the spring, as soon as the plant begins to grow.

How do I make blue hydrangeas with vinegar?

To increase the acidity of your garden’s soil, use vinegar! For each gallon of water in your watering can, add one cup of white distilled vinegar and pour on your hydrangeas. The acidity of the vinegar will turn your pink hydrangeas blue or keep your blue blooms from turning pink.

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.

Is Epsom salt water good for hydrangeas?

The short answer is yes it will – Epsom Salts is Magnesium sulfate and Sulfur is the mineral that we apply to the soil to lower the pH. You will also be applying Magnesium which should help enhance the color of your foliage since Magnesium is needed for chlorophyll production.

Does vinegar turn pink hydrangeas blue?

There is one more trick up the apple cider vinegar sleeve: You can actually change the color of hydrangea flowers from pink to blue. Hydrangea flowers will be pink in alkaline soil, but change to blue in acidic soil. So, mix up some apple cider vinegar and water, and give all the acid-loving plants a treat.

Will vinegar water kill hydrangeas?

While vinegar can kill many common plants, others like hydrangeas, rhododendrons, and gardenias are acid-loving drought-tolerant plants that thrive on acidity. Combine a gallon of water with one cup white distilled vinegar and use it the next time you water these plants.

What can I use to make my Hydrangea Bloom Blue?

You can do that in a variety of ways. Organic acidifiers include sulfur and sulfate soil additives. There are also easy-to-use soil additives made specifically for hydrangeas. Bailey’s Color Me Blue (soil sulfur) or Bailey’s Color Me Pink (garden lime) change the pH of the soil so you can enjoy the hydrangea bloom color you want.

Why are the flowers on my hydrangeas turning blue?

Hydrangeas change color (except for the white ones) based on the pH level of their soil. The more alkaline the soil, the pinker the flowers. To make pink hydrangeas turn blue (or to keep your blue ones from turning pink), increase the acidity of soil. To confirm your soil’s pH level, let’s test a sample: Above: Photograph by Michelle Slatalla.

How can I change the color of my hydrangeas?

Here’s how to change hydrangea flowers: Hydrangeas can change color (pink to blue) if you alter soil pH levels with coffee grounds, vinegar, or eggshells. Icon – Arrow Left

What kind of soil do you need for Blue hydrangeas?

For true blue flowers, the hydrangeas need to be grown in acidic soil (pH 5.5 and lower). For pink flowers, the plants need neutral to alkaline soils (pH 6.5 and higher). For purple blooms (or a mix of blue and pink flowers on the same plant), the pH of the soil must be 5.5 and pH 6.5. 5. Adjust the Soil pH

What turns hydrangea blue?

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.

What makes hydrangeas pink or 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 you turn a blue hydrangea pink?

A high pH makes the soil more alkaline, which will color the hydrangea blooms pink. A low pH makes the soil more acidic, which turns the hydrangea blooms blue. You can change the color of some varieties of hydrangea by adding aluminum sulfate to make the flowers more blue, or by adding dolomite to make them pink.