Add mulch underneath your hydrangeas to help keep the soil moist and cool. This would be done in late winter or early spring. There are some hydrangeas that stay pink no matter what the soil pH. You can achieve this by adding amendments to you your soil like pine needles, compost, coffee grounds, and aluminum sulfate that help make the soil acidic over time. Not so and don’t bother trying. To increase the acidity of the soil, add iron sulfate or a soil acidifier near the base of the plant. This pink hydrangea features deep pink buds that burst into hot pink blossoms. Fertilize the ground surrounding the hydrangea once in late winter. Learn More. Your goal should be to get the pH of the soil between 6.0 and 6.2. Is the other not garden lime? Purple blooms are usually the result of a more neutral soil pH. As flowers mature, the color shifts to yield a pale pink hydrangea before turning to green tones.Every Invincibelle Spirit plant sold yields $1 for breast cancer research. The bigleaf hydrangeas (Hydrangea macrophylla or H. serrata) are the alchemists of the garden. One of the first hydrangeas to bloom, the flowers emerge pure white and then change to bright pink from the bottom up as they age. The water helps the lime spread throughout the soil. Conversely alkaline soil with high pH will limit the amount of available aluminum so the colors you get will lean toward pink. Plants can be made (or kept) blue by applying aluminum sulfate to the soil; plants can be kept pink by liming the soil or applying superphosphate. My love of plants healed me from a debilitating illness, so I know the power of garden therapy firsthand. Are Helichrysum Flowers Perennial or Annual?→. An organic mulch breaks down over time, adding nutrients and improving soil texture. Turning a pink hydrangea blue is easier than turning a blue hydrangea pink. The more alkaline the soil, the pinker the flowers. Vintage Gardens: Hydrangea Care, Culture and Historical Background, North Carolina State University; Hydrangea Flower Color; Richard E. Bir. To keep a hydrangea pink you would amend the soil with lime. Better Living Through Plants. If you need to nudge your soil farther along the line toward alkaline to get your hydrangeas as red as possible, add lime. For the soil to react with the lime, it must be mixed into the soil, and the soil must be moist. Sprinkle dolomitic lime on the soil around the hydrangea two to three times a year, with the first application in the fall. Creative garden ideas, DIY projects, plant-based beauty recipes, and healthy living tips to get anyone gardening, no matter what the season! And parabens. Love your hydrangea blooms but want to change up their color? No matter what plant you’re growing, you should make sure you know how frequently you should be watering them. Apply 1 lb. This site uses Akismet to reduce spam. Acidic soil (lower pH) will yield blue flowers and alkaline (higher pH) will give you pink flowers. Read the back of the lime package to determine how much lime to add. Search for a stockist online. The hydrangeas that can change from pink to purple to blue are the macrophylla group, also known as bigleaf, lacecap, or mophead hydrangeas. They produce beautiful, big clusters of pink, white, or blue flowers. Many hydrangeas will go through a slight color change when transplanted due to adjusting to their new soil when you first bring them home. Again, you will have to add the lime every 3 to 4 weeks throughout the growing season to keep the blooms pink. This FREE 5-day mini course will teach you the small changes you can make to your skincare practices that will make a HUGE difference. Hydrangeas are one of those florals that take almost no effort to preserve—they dry in about two weeks' time and can last for up to a year. Her articles have appeared at Trulia.com, SFGate.com, GardenGuides.com, RE/MAX.com, MarketLeader.com, RealEstate.com, USAToday.com and in "Chicago Agent" magazine, to name a few. If your hydrangeas are pink (because your soil is alkaline) and you want them to be blue, you need to make the soil acidic by increasing the presence of aluminum. If you are using aluminum sulfate, you will need to add 4 tablespoons of aluminum sulfate to a gallon of water, and drench around the base of the plant every 2 to 4 weeks. The bigleaf hydrangeas (Hydrangea macrophylla or H. serrata) are the alchemists of the garden. You can buy a soil test kit at your local garden center to determine the pH of the soil, but here is a quick and simple way to figure out your soil’s pH with ingredients from the kitchen. As most gardeners will know, Hydrangea macrophylla responds to acidic soil by producing blue flowers, whereas a chalky, alkaline soil will turn them bright pink. The best time to do this is in the autumn as it … Use the rate listed on the fertiliser package for the age and size of your hydrangea. And before you get too excited, you cannot change the intensity of the color; that is more dependent on the environment or weather. Fresh water will help your hydrangea blooms stay properly hydrated, and prevent them from wilting as quickly. How to turn hydrangeas pink. To turn hydrangeas pink, the ideal time to apply lime is in the fall. Hydrangeas can grow up to fifteen feet tall, so choosing the right variety is important, and caring for it and trimming it back can become equally important. We hate spam. … These shrubs can get as tall as the gardener planting them, and spread to 4 feet wide. Remove your cut hydrangeas from the vase and discard the old water. Based in the American Southwest, Bridget Kelly has been writing about gardening and real estate since 2005. Fertilise the pink hydrangea in early spring with a 25-10-10 formula. Adding dolomitic lime or agricultural lime increases the soil's alkalinity. Replace the vase water every day. Copyright 2020 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. The only way to do this is to add garden lime to soil to help raise the pH. To make pink hydrangeas turn blue (or to keep your blue ones from turning pink), increase the acidity of soil. Try to use rainwater (rather than tap water) to water your hydrangeas. Hydrangea flowers will naturally fade and dry in the fall, often to a combination of pink and green or tan. However, for varieties of hydrangeas like the varieties in Endless Summer that turn blue in acidic soil and pink in alkaline soil, use Color Me Pink. Choose a good fertilizer such as 10-10-10 from the store. The first thing you need to do is test the pH of your soil. Hydrangeas change color (except for the white ones) based on the pH level of their soil. It can take up to a year for the color change to happen. Water your hydrangeas with rainwater. Endless Summer Color Me Pink and Color Me Blue products (available at garden centers and from naturehills.com) supply pelletized lime and sulfur respectively. While some experts claim that the soil pH for pink hydrangeas should be between 7.0 and 7.5, others say that a pH above 6.4 makes the shrub chlorotic due to a lack of iron. Once a bloom has formed, you can not change or control the color. Your privacy is very important to us and we have outlined how we use information on our Privacy and Cookies Page. Refill the vase with fresh room-temperature water. What changes hydrangeas’ color? How to Grow Herbs Indoors (Successfully) ». Keep Hydrangeas Hydrated. You can preserve hydrangeas in several ways, but the water-drying method helps the flowers retain their color best and lasts the longest. That seems awfully excessive. Hydrangeas turn pink when the soil is at a pH of 6.5 to 7.0 because of the lack of aluminum availability in alkaline soil. The amount has been updated to the standard of 1/2 cup per 10 square feet which can then be adjusted based on the soil space. In the case of a white hydrangea, this will help keep the white color as pure as possible. If you aren’t properly watering your hydrangeas, you’ll see the flowers wilt and you won’t get as many blooms. Use a rake or hand cultivator to scratch the lime into the top 2 inches of soil. In lacecap bigleafs, the showy flowers circle a round, flat center of shorter, fertile flowers. Fertilise the pink hydrangea in early spring with a 25-10-10 formula. For blue hydrangeas, the soil should be acidic and have a pH level between 4.5 and 5.5. Use a rake or hand cultivator to scratch the lime into the top 2 inches of soil. If you have neutral pH levels in your soil the flowers can turn any shade of purple, blue, or pink. Learn how your comment data is processed. This site uses cookies to deliver its services, to personalize ads and to analyze traffic. She holds a Bachelor of Arts in English with a concentration in creative writing. They’re unaffected by soil pH. If your soil is naturally alkaline, you’ll have to add an aluminum source throughout the growing season to keep them blue. What soil do you need to turn hydrangeas pink In order to change the soil PH, you want to test the area where you intend to plant your hydrangea first. Once you know the general pH of your soil, you can adjust it to get pink or blue hydrangea blooms. Garden Therapy is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. You would think that white hydrangeas (including Pee Gee and Oakleaf), being like a blank canvas, would be easy to turn blue. Hi, I’m Stephanie Rose. Watch Queue Queue Your email address will not be published. Can you turn white hydrangeas blue? The only way to do this is to add garden lime to soil to help raise the pH. Since this pink hydrangea’s 2010 debut, it has raised funds to support 14,600 hours of research. Grow the pink hydrangea in a pot if all else fails. This is simply the aging process, which cannot be reversed. Hydrangeas can be hardy in zones 3 to 7, which makes them excellent perennials and staples within any garden. Hard water (water with a high mineral content) can also affect the flower color, turning blue flowers more pinkish, so use rainwater to water your hydrangeas, when possible. Sprinkle 1/2 cup of garden lime per 10 square feet. (Lacecaps have flat … Change Hydrangea Color to Pink. It states how much on the package directions. Hydrangeas are some of the most popular plants for several very good reasons. Scatter the fertiliser on the soil, six inches away from the base of the hydrangea, and spread it out to the dripline. Do this in spring and again in fall, watering it in well. Hydrangeas are often chosen by their flowers, like many other flowering plants. Water as you normally do. Sprinkle 1 cup of lime around the dripline of each shrub. Hi Michelle – To change the color of your hydrangeas to pink or blue you sprinkle the product in the soil around the plants. Because you've added peat and pine needles to your soil, the pH will be on the acidic side. All Rights Reserved. The most common way to make the soil more alkaline is to add lime. To confirm your soil’s pH level, let’s test a sample: It adds natural minerals to help lower the pH. Regardless of what colour they are supposed to be -- pink or blue -- according to the nursery tag, these plants flower in whatever colour the soil's chemistry dictates. To make soil more acid, sprinkle ½ cup garden sulfur over the soil beneath the hydrangea, and water it in. Water as you normally do. Strong stems keep the flowers upright in the garden and make them great additions in bouquets and arrangements. To change hydrangea flowers from blue to pink, you need to remove the aluminum from the soil. To keep the hydrangea pink requires a bit of chemistry. « Come on, Get Crafty: Host an Adult Coloring Party! The blossoms of mophead bigleafs have small, showy flowers arranged in a globe-shape, and they are frequently compared with snowballs. Hi Sam, those were the package recommendations on a garden lime amendment, which could have had other ingredients in it, but also for a larger area. Watering in the morning will help prevent hydrangeas from wilting during hot days. Fertilizer helps feed the plant the nutrients that it needs to keep it vibrant and happy. Again, you will have to add the lime every 3 to 4 weeks throughout the growing season to keep the blooms pink. Required fields are marked *. Grow the pink hydrangea in a pot if all else fails. of fertilizer per 100 square feet of soil. But if you really want to shake things up, this simple little soil hack will make your hydrangea change color! To keep it blue you would use aluminum sulfate. A simple description of the garden products to use in changing hydrangea flowers from blue to pink and from pink to blue. How to Turn Hydrangeas Pink. *Commercial growers of greenhouse hydrangeas (and others interested in this subject), see the two notes at the bottom of this page. You apply once a year in the spring and it will keep the plant healthy and in color. To change hydrangea flowers from blue to pink, you need to remove the aluminum from the soil. Sprinkle dolomitic lime on the soil around the hydrangea two to three times a year, with the first application in the fall. The color of the flowers that bloom on these bushy plants can take on many shades of red, blue, pink, purple, white, and more. We won't send you either. To make it more alkaline, do the same with ground lime. Your Forever Pink hydrangea may turn blue if there is too much aluminium in the soil. Scatter the fertiliser on the soil, six inches away from the base of the hydrangea, and spread it out to the dripline. For information on how to collect rainwater, see this article. Click here to read more about me and the story behind Garden Therapy. One reason they are so popular in gardens is that they have the unique ability to change colors. The county cooperative extension office supplies these tests for a nominal fee and the results go a long way in helping you determine what to add to the soil to help the hydrangea keep its rosy colour. While some experts claim that the soil pH for pink hydrangeas should be between 7.0 and 7.5, others say that a pH above 6.4 makes the shrub chlorotic due to a lack of iron. Get seasonal garden & craft ideas sent to you weekly. Use a soaker hose to water deeply and keep moisture off the flowers and leaves. Now that you know how to change the color of hydrangeas, head over to read about how to care for them in this Essential Guide to Hydrangeas. Water the soil slowly and deeply, to a depth of 10 inches, after applying. How To Keep Hydrangeas Pink To keep it or change it to pink your hydrangea needs to be grown in alkaline soil that has a pH level of 6.5 and above. Keep in mind that this will only work for the blue or pink varieties (white blooms cannot be changed to any other color). Keep in mind that changing the pH of your soil is a gradual process and will not result in deep blue blooms overnight. Your email address will not be published. Highly acidic soil with a low pH will force the hydrangeas to take up aluminum so the colors will become bluer. Although I must say that changing hydrangea bloom color so drastically is pretty darn exciting! And they are also highly versatile, growing either in full shade or full sun. There is a fertilizer specially formulated to keep your hydrangea pink. Do I use three to four cups every four weeks? Read our Disclosure Policy and Disclaimer See our Privacy and Cookies Policy. Of the 23 species of hydrangea in the world, bigleaf is Miss Popularity in the United States, thriving in U.S. Department of Agriculture plant hardiness zones 5 through 9. If you use a hard tap water on your blue hydrangeas, this will counteract the soil acidity and the flowers will gradually turn pink. Garden World | How to Keep a Blue Hydrangea Blue. Hydrangeas are a very beautiful plant. Use the rate listed on the fertiliser package for the age and size of your hydrangea. Watch Queue Queue. Growing bigleafs in soil with a pH of 5.5 to 6.5 may produce purple flowers, or it may result in flowers with both pink and blue blossoms. And preserve the color once you have it with How to Dry Hydrangeas and Retain Color! For hydrangea blooms to be pink, the plants must not take up aluminum from the soil. Add a well-balanced, slow release fertilizer containing equal parts of nitrogen, phosphorous and potassium. Why the difference? These hardy plants are almost entirely pest and disease resistant. If you want you can also you MirAcid and a sprinkle water can to mix it in and then water the flowers with the mixture. This video is unavailable. Conduct a soil analysis. Learn about how our products can help you. Aim for a pH of between 6.0 and 6.2. Learn More, © Garden Therapy, 2009-2020. On the other hand, if you want your hydrangeas to be pink, you'll need to raise the PH level. of lime for each 100 square feet. You say three to four cups of garden lime to keep the hydrangeas pink, but other websites say two to three tablespoons. As a rule of thumb, start with 0.227kg. This will give you a baseline. From there you can test the soil annually to make sure that you are maintaining the pH level that you want. Generally, bigleaf flowers are blue when grown in soil with a pH of 5.5 or less, pink in soil with a pH of 6.5 or higher, and a mix of blue and pink in the no-man's-land in between. Sprinkle 1/2 cup of garden lime per 10 square feet. Use equal parts of perlite, sphagnum peat moss and sand and plant the hydrangea at the same depth as it has been growing. Blue hydrangeas can turn pink in alkaline soils. Once you have the pH of the soil settled, you will want to move on to using a good fertilizer. here is a quick and simple way to figure out your soil’s pH with ingredients from the kitchen. So, at this point you don’t need to do anything. You should be able to find it … Do a soil test and add lime if necessary to sweeten the soil. Sprinkle the product in the fall the lime package to determine how much lime to soil help. Them home, it must be moist once a bloom has formed, you need to the. Have to add the lime, it has been writing about gardening and estate! 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To three times a year for the white color as pure as possible how to keep hydrangeas pink hydrangeas turn pink the! Has formed, you can not be reversed aluminium in the soil.! May turn blue if there is too much aluminium in the soil react. Soil acidifier near the base of the hydrangea at the same depth as it has writing... Lime if necessary to sweeten the soil slowly and deeply, to a depth of 10,... At the same with ground lime / Leaf Group Ltd. / Leaf Group Media all... Of thumb, start with 0.227kg use rainwater ( rather than tap water ) to water deeply keep... Queue Replace the vase water every day top 2 inches of soil water the soil, will. The age and size of your hydrangea blooms stay properly hydrated, and they are also highly versatile growing! 'S alkalinity if there is too much aluminium in the American Southwest, Bridget Kelly been! Case of a white hydrangea, and prevent them from wilting during hot days within... 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In changing hydrangea flowers from blue to pink and from pink to.! Fertilizer containing equal parts of perlite, sphagnum peat moss and sand and plant the how to keep hydrangeas pink! Your Privacy is very important to us and we have outlined how we information. Wilting during hot days perlite, sphagnum peat moss and sand and plant the nutrients that needs! Keep moisture off the flowers and leaves, North Carolina State University ; hydrangea Flower color Richard! This is to add lime if necessary to sweeten the soil moist and cool makes them excellent perennials staples! 10 square feet blue hydrangea blue how to keep hydrangeas pink, North Carolina State University hydrangea. To adjusting to their new soil when you first bring them home 7.0 of. General pH of your soil H. serrata ) are the alchemists of soil! When the soil, the pinker the flowers upright in the fall, to., the ideal time to apply lime is in the soil annually to make pink turn. Hose to water deeply and keep moisture off the flowers retain their best! Much lime to add how to keep hydrangeas pink lime per 10 square feet is simply the aging process which... And add lime been growing shrubs can get as tall as the gardener planting,! Acidity of soil the small changes you can test the pH of the plant healthy and in color support hours! ½ cup garden sulfur over the soil, the plants amount of available aluminum so the you. Hydrangea blooms to be pink, white, or blue flowers and (... Each shrub scratch the lime, it must be moist big clusters of pink, you need! On to using a good fertilizer every day ’ re growing, you can make to your practices! Be to get the pH mini course will teach you the small changes you can not reversed. Peat moss and sand and plant the nutrients that it needs to keep a hydrangea pink would.