Why do white hydrangeas turn pink
Emily Carr
Updated on April 30, 2026
Hydrangeas are a curious type of plant, with their colors often changing because of the pH of the soil. … In fact, the only time that they begin to change color is when the blossom is growing old and dying. Here, the blossoms will turn to a pink, tan, or blue color, depending on the genetics of the flower itself.
How do you keep white hydrangeas from turning pink?
However, when white hydrangeas get older they can turn blue or pink at the tips. You can try to prevent it by using a well-balanced fertilizer that is low in phosphorous and keeps the acidic levels down. You may need to fertilize in the spring or summer if the soil pH levels need adjusting.
Do white hydrangeas change color?
White hydrangea color is not affected by the soil pH. The white flowers stay white (color can never be changed) and usually prefer the same conditions as the pinks and reds. But the relationship between color and pH is more complex than just numbers on a scale.
Can a white hydrangea turn pink?
These flowers can look white as the color fades, but you cannot turn a true pink or blue Hydrangea into a true white Hydrangea. The opposite is also true; a true white Hydrangea cannot be changed to pink or blue.Why are my hydrangea not turning white?
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. Many gardeners believe that color is controlled solely by the availability of aluminum in the soil. … Those green hydrangea flowers turn color with longer days of light.
What to feed hydrangeas to keep them white?
They had a good prune. What to I need to do to do to maintain the white colour? Our answer: Apply sulphate of potash 2-3 times per year (now until late spring) and the colour should change back to white.
Why is my hydrangea pink?
You see, for most French hydrangeas (Hydrangea macrophylla), the flower color indicates the pH of the soil. … In alkaline soil (pH above 7), flowers turn pink or even red. In slightly acid or neutral soil (pH 6 to 7), blooms may be purple or a mix of blue and pink on a single shrub.
How do I get my hydrangeas to turn back in color?
Alkaline soil, with a pH above 7.0, promotes pinks and reds. 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.How do you take care of a white hydrangea?
- Water at a rate of 1 inch per week throughout the growing season. …
- Add mulch underneath your hydrangeas to help keep the soil moist and cool. …
- Apply fertilizer based on your specific hydrangeas. …
- Protect against pests and disease by choosing cultivars with resistant traits.
If you need to nudge your soil farther along the line toward alkaline to get your hydrangeas as red as possible, add lime. Adding dolomitic lime or agricultural lime increases the soil’s alkalinity. Sprinkle 1 cup of lime around the dripline of each shrub. Do this in spring and again in fall, watering it in well.
Article first time published onWhy did my white hydrangeas turn green?
Hydrangea flowers turn can green in response to less hours of daylight. With fewer hours of sunlight there is less energy for the flower heads to produce the blue, pink or white pigmentation in the blooms. This causes the hydrangea flowers to fade from their original color to green in late Summer.
How do you make hydrangeas pink?
How to Turn Hydrangeas Pink. To change hydrangea flowers from blue to pink, you need to remove the aluminum from the soil. The only way to do this is to add garden lime to soil to help raise the pH. Sprinkle 1/2 cup of garden lime per 10 square feet.
What do white hydrangeas mean?
White hydrangeas are a symbol of purity, grace and abundance. Not only that, but these beautiful blooms are often sent out as a status symbol representing wealth to boast.
What does Epsom salt do for hydrangeas?
Adding Epsom Salt to plants has been reported to enhance the color of blossoms and leaves, promote new flowers and fruit, improve the root system and improve the strength of stems. Epsom Salt is safe to use and will not build up in the soil, even if additional magnesium isn’t needed.”
What do you feed pink hydrangeas?
- Fertilize the hydrangea once in March, May and July with 2 cups of 10-10-10 slow-release granulated fertilizer for every 100 square feet. …
- Water the soil around the hydrangea thoroughly after fertilizer application to dissolve it into the soil.
Does Epsom salt change the color of hydrangeas?
Epsom salt comes from the reaction of magnesium metal and sulfuric acid. … 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.
How do I get more flowers on my hydrangea?
- Plant smooth hydrangeas in full sun if the soil stays moist. …
- Water them during times of drought, especially during the heat of summer.
- Amend the soil with organic matter (such as compost).
- Prune stems back in early spring, just before new growth emerges.
Can Annabelle hydrangeas change color?
The color of the popular Annabelle Hydrangeas, which feature large white ball-shaped blooms, as well as newer pink versions cannot be changed.
How much sun does a white hydrangea need?
Plant Needs You can use Invincibelle Wee White hydrangea in almost any landscape application. It’s an especially nice choice for easy-care summer interest for foundation plantings or flower beds. Maintenance Notes: We recommend a minimum of six hours of bright sun for all smooth hydrangeas like Invincibelle Wee White.
Do white hydrangeas need sun?
This is a white hydrangea you’ll want to see up close. Growing Conditions: Plant in moist, well-drained soil in sun to part sun. Avoid pruning; blooms form on last year’s growth.
What is the most beautiful white hydrangea?
Hydrangea arborescens – Smooth hydrangeas are among the most popular hydrangeas that are white such as ‘Annabelle,’ ‘Incrediball,’ and ‘Invincibelle Wee White. ‘ These white hydrangeas are known to thrive in shady garden locations and may even naturalize where conditions are ideal.
How do you turn pink hydrangeas purple?
To shift pink hydrangea flower color to purple shades, you can try several things. Add aluminum sulfate to soil where the hydrangea is growing. This helps lower pH, but you’ll need to do it several times a year. The lower soil pH helps plant roots to take up aluminum, which is responsible for the blue tints in petals.
Will coffee grounds change the color of my hydrangeas?
Some gardeners report success in turning their hydrangeas blue by applying coffee grounds to the soil. The coffee grounds make the soil more acidic, allowing the hydrangea to more easily absorb aluminum. In addition, fruit peels, lawn clippings, peat moss and pine needles, are thought to have a similar effect.
What kind of soil do white hydrangeas need?
All hydrangeas prefer humus-rich soil that does not dry out. Improve their chances by adding plenty of well-rotted organic material to their new home before planting.
Do hydrangeas mean death?
The blue hydrangea flowers are associated with death. In other cultures, the blue hydrangeas are used to express feelings of sympathy. … The sympathy meaning is associated with all colors of hydrangeas and that is why they are often included in sympathy arrangements as well as funeral flowers.
Are pennies good for hydrangeas?
Hydrangeas planted with pennies may display colorful blooms, but those pennies can’t take credit for the color. Hydrangea flowers change color based on aluminum absorbed from the soil up into bloom tissue.
Are hydrangeas bad luck?
While undeniably beautiful, the hydrangea symbolizes many different things from heartfelt emotion to frigidity and bad luck.
Is Baking Soda Good for 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.
What does blood meal do for hydrangeas?
Adding blood meal to garden soil will help raise the level of nitrogen and will help plants to grow more lush and green. The nitrogen in blood meal can also help raise the acid level of your soil, which is beneficial to some kinds of plants that prefer soils with low pH (acidic soil).
Are bananas good for hydrangeas?
Banana Peels for Hydrangeas Banana peels also make a great fertilizer for hydrangeas. Use the peels from two or three bananas per plant. Chop the peels into small pieces and bury them around the base of each plant. … Using banana peels as a fertilizer for your hydrangeas will also help to repel aphids.