What to put on hydrangeas to make them blue?

Adding dried coffee grounds to the soil around hydrangeas increases the acidity of the soil, which boosts the blue-producing capabilities of the hydrangea and the ability to absorb aluminum from the soil. Monitor the pH level of the soil over time with a pH test kit; a range of 5.2 to 5.5 is best for blue blooms.

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.

Does Epsom salt 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.

What do you add to soil to make hydrangeas purple?

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. To raise the pH, use ground lime. Follow the directions on the product you use, and retest your soil to make sure the pH is in the range you want.

Does baking soda help hydrangeas?

Baking soda is one of the recognised ways to change the color of hydrangeas. It will alter the pH level in the soil and therefore change the bloom color. White hydrangeas are primarily grown in a neutral soil and to keep them that way, you must transplant them into a soil similar to what your plant has been grown in.

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.

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 can I put on my hydrangeas to make them turn blue?

We carry Color Me Blue Hydrangea Feed and Color Me Pink Hydrangea Feed at the garden center. You can naturally shift your soil more to the acidic side of pH, but it’s very slow. Try adding coffee grounds, crushed eggshells, peat moss, evergreen needles, and citrus peels to the soil in the area you want to acidify.

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

Which is the best plant food for hydrangeas?

Slow-release might not necessarily be the best food for your hydrangea given the situation. You can always opt for a fast release version which is going to be a bit less expensive. Fast release such as 10-10-10 will work very well if you apply it two times during the summer.

What kind of fertilizer to use on hydrangeas?

All hydrangeas benefit from fertilization. To produce or maintain blue flowers on a hydrangea bush, use a fertilizer that is low in phosphorus and high in potassium. This fertilizer may be labeled as an appropriate fertilizer for azaleas, camellias and rhododendrons.