In USDA hardiness zone 6 and warmer climes, the little lacecap hydrangea serrata ‘Blue Deckle’ will flourish in the shade of towering deciduous trees. With magnificent red and purple leaves that equal any fall foliage display sought after by leaf peepers, this late-blooming shrub that peaks in July and August has more in store for you when autumn arrives.
- H. serrata is indigenous to Korea and Japan.
- 6 through 9 USDA Hardiness Zones
- 3 to 4 feet tall
- Partially shady for sun exposure
What hydrangea variety comes in blue?
Seek out blue hydrangeas like “Nikko Blue,” “Endless Summer The Original,” “Penny Mac,” “Blauer Prinz,” or “Endless Summer Twist-n-Shout.” If the plants aren’t in bloom at the nursery, you can choose blue-blooming kinds using the image on the plant tag.
What hydrangea has the most blue hue?
These are the top-tier blue hydrangeas, according to renowned plant expert Michael A. Dirr and others:
- Mophead, pink to deep blue, cold-hardy to -11F, mildew-susceptible; strong; 6 feet high; shade garden-worthy after 2 years; partial dieback, but regrowth with plenty of bloom buds; Hydrangea macrophylla ‘Dooley’
- remontant (repeat-flowering) varieties include “Endless Summer,” “Decatur blue,” “David Ramsey,” “Oak Hill,” and “Penny Mac”; comparable; blossoms on new growth; In tests, cold damage to the foliage caused it to become flat and medium green. However, fresh branches now produce flower buds and completely expressed inflorescences, and are laden with flowers.
- ‘Gnrale Vicomtesse de Vibraye’ is an early French hybrid with a mophead that opens softly cream-yellow before becoming pink to blue. The stems are dotted (speckled) medium-green, wine-red leaves that are mildew-prone After two years, the shadow garden has proven to be robust, with no dieback and plenty of flowers.
- ‘Nikko Blue’ is a well-liked true remontant with emerald green foliage that is 5 to 6 feet tall and 4-6 feet wide. It is also cold-hardy (reviving in tests after freezing to the ground), mophead, and not very drought-tolerant.
- ‘Mini Penny’ is a powder-blue mophead with dark green foliage that is mildew-resistant, growing 3 to 4 feet tall and wide in full to partial shade. Unlike most hydrangeas, it blooms on both new and old growth.
The majority of blue hydrangeas retain their color best in soil with a pH between 5.2 and 5.5, which is somewhat acidic, and turn pink in soil with a pH higher than 5.5. Most soil in the eastern United States is naturally acidic. But if the pH of the soil is too alkaline (6.0 or higher), aluminum sulfate can be added. A lot of aluminum is hazardous to plants, so take care not to add too much. The pH can be lowered by adding organic matter to the soil, such as coffee grounds, fruit and vegetable peels, or grass clippings. Potassium-rich fertilizer with a low phosphorus content can also aid in the development of a beautiful blue hue. 25/5/30 is an excellent fertilizer ratio (potassium is the third number).
See our Plant Information Guides for advice on a number of gardening-related issues. – With permission from NYBG Plant Information Service
Do blue hydrangeas exist?
I had a variety of roles as a founding worker at Gardener’s Supply over the years. I currently run my own business, which is called Johnnie Brook Creative. A huge vegetable garden, a seasonal greenhouse, a cutting garden, perennial gardens, a rock garden, a shade garden, berry plantings, numerous container plants, and a meadow garden are among the gardens surrounding my Richmond, Vermont, home. The garden is the only place I would rather be. Check out this Garden Gate magazine video interview from January 2021 if you’re interested in learning more.
You may have heard that altering the pH of the soil can alter the color of hydrangea blossoms. But it goes a little bit deeper than that.
To begin with, not all hydrangeas bloom with blue flowers. The only hydrangeas that can produce white or cream flowers are those of the PeeGee family, the Annabelle hydrangeas, and oakleaf hydrangeas. At the end of the season, their flowers may occasionally take on a pink tint, but that is about as colorful as they get.
Hydrangea cultivars known as mopheads and lacecaps typically produce hydrangeas with bloom hues ranging from pink to blue and purple. These particular hydrangeas have the intriguing capacity to alter the color of their blossoms according to the soil’s chemistry. The flower hues are more pink when grown in alkaline soil. Acidic soil causes the bloom colors to be bluer.
Early blue hydrangeas of what kind are they?
A perennial plant called Hydrangea macrophylla has the unusual capacity to continue blooming all through the spring and summer.
Hydrangeas have enormous, billowy flowers that exude a classic beauty that is difficult to resist. Clear blues, vivid pinks, frosty whites, lavender, and roses can all blossom on the same plant, which adds to the allure of color.
The amount of aluminum ions in the soil has an impact on the hues of some H. macrophylla flowers. Pink flowers grow in soils with a pH higher than 5.5, whereas blue blooms grow in acidic soils with a pH lower than 5.5. A flower’s pH has no effect on white blossoms.
The huge, vibrant blossoms of hydrangeas are well known, and they are widely distributed around the world. Hydrangeas come in a variety of species and cultivars, and their blossoms come in a wide range of hues and shapes. As long as you plant them in the proper conditions as outlined below, they are rather simple to grow.
What can you use to dye hydrangeas blue?
Like coffee itself, coffee grounds have an acidic pH. The acidity of the soil around hydrangeas is increased by mixing in dried coffee grounds, which enhances the hydrangea’s capacity to produce blue and its capacity to absorb aluminum from the soil. With a pH test kit, track the soil’s pH over time; a range of 5.2 to 5.5 is ideal for blue flowers. Coffee grinds occasionally scattered on the soil’s surface or placed there will slightly raise the acidity level.
How are blue hydrangeas kept that color?
Although most plants may grow in a variety of soils, others require particular kinds of soil to thrive. Rhododendrons, azaleas, and other ericaceous plants require acidic soils in order to thrive. The soil in your garden must be acidic if they flourish there or in the gardens nearby. Rhododendron leaves turning yellow or disappearing from the area indicate that your soil is likely alkaline. In addition to affecting what you may grow, your soil type can also affect some plants’ leaf and blossom colors; hydrangeas are a well-known example.
Some hydrangea cultivars grow pink or red in alkaline soil and blue or purple in acidic soil. Therefore, if you plant a beautiful blue lacecap or mophead hydrangea in your garden and your soil is neutral to acidic, it will continue to produce blue flowers every year. Even if it was clear blue when you got it, it will flower purple-red or pink if you plant it in alkaline soil the next year.
It is challenging to keep beautiful blue blossoms alive in the open ground, but it is doable if you grow it in a pot; hydrangeas make wonderful topics for pots and containers. Select a pot that is attractive and big, at least 40 cm (15 cm) in diameter. Vitax Ericaceous Compost is the best growing medium for it; plant it there. If you consistently feed your hydrangea, it will thrive on this fertilizer that is specifically made for rhododendrons, azaleas, and other lime-hating plants.
Even though the growing medium begins out being free of lime, repeated watering in places with hard water tends to make it more alkaline. Therefore, add Vitax Hydrangea Colourant, a powder containing aluminum that you may mix with the compost, to ensure that your hydrangea stays truly blue. Each spring, you can also incorporate a small amount into the soil’s top layer and add it to the can when watering your plant.
White hydrangeas, incidentally, don’t change color depending on the type of soil, but they can blush pink in the light.
Feeding and watering
In pots, containers, and during dry spells in the open ground, regular watering is necessary since hydrangeas detest dry environments. When you plant your hydrangea in a bed or border, add lots of garden compost or farmyard manure, and make sure to water well both before and after planting.
The presence of food in the soil is necessary for hydrangeas to grow and produce flowers, even if they are not very demanding plants. In the open ground and in pots and containers, Vitax Conifer and Shrub Fertilizer should be used annually. This is ideal for acid-loving plants and won’t change the hydrangea’s color.
Which hydrangea is the most beautiful?
Best Hydrangea Varieties: Top 10 from Reliable Winners
- H. paniculata ‘Limelight’.
- H. paniculata, or little lime.
- Amazing H. arborescens
- Hydrangea with Fire Light Panicle.
- Bobo H.
- H. Pinky Winky
- Spirit of Invincibelle II H.
- Quick Fire Little H.
Is a dwarf blue hydrangea available?
‘Cityline Rio’ hydrangea, which grows to a maximum height of 3 feet (1 m) and has blue flowers with green “eyes” in the centers, is another excellent dwarf variety.
Will hydrangeas become blue in vinegar?
In alkaline soil, hydrangea blossoms will be pink; in acidic soil, they will turn blue.
If great French wine is not properly stored, it will turn into vinagre, which we translated into vinegar in English. Vinagre is a combination of the Old French words “vin” (wine) and “aigre” (sour).
There are certain advantages to using vinegar in gardening, especially apple cider vinegar. A few vitamins and minerals are present in apple cider vinegar because it is only fermented apple juice. However, vinegar’s 5% acidity makes it an excellent remedy for any acid-loving plants, including rhododendrons, azaleas, northern bayberries (Myrica pensylvanica), blueberries, and cranberries. Conifers and pecans are two examples of trees that favor acidic soil.
Along with feeding your garden plants, you may use apple cider vinegar on houseplants that prefer acidic soil, such gardenias and camellias. Some houseplants thrive in acidic soil.
You must measure the pH of your soil before fertilizing it or adding any amendments. The soil pH test determines how acidic or alkaline the soil is.
A very acidic pH of 3 corresponds to a very alkaline pH of 10. Seven is regarded as the neutral pH. Your soil’s acidity or alkalinity has an impact on a number of chemical processes, including which nutrients are locked up in the soil and which nutrients are available to your plants.
There are several garden plants that do well in acidic soil, despite the fact that the ideal pH range for most plants is between 5.5 and 7.5. It is not surprising that many plants that thrive near pine trees, such as blueberries, azaleas, and rhododendrons, also prefer acidic soil because pine needles make soil acidic.
The best apple cider vinegar to put on plants is raw, organic apple cider vinegar that hasn’t been filtered. Ensure “with the mother” is written on the label.
The mother is a brown mass that is composed of yeast and bacteria that were left behind during fermentation.
Apple cider vinegar should never be poured directly over plants since it will damage them. Of course, undiluted vinegar will work well if your purpose is to kill plants like weeds in walkways, sidewalks, or driveways.
Use apple cider vinegar diluted with water (20 parts water to 1 part vinegar). Water the plants at the base of them. The vinegar-and-water mixture might burn the leaves, so try to avoid getting it on them.
The ability to transform the color of hydrangea blossoms from pink to blue is another trick apple cider vinegar has up its sleeve. In alkaline soil, hydrangea blossoms will be pink; in acidic soil, they will turn blue.
Give the acid-loving plants a treat by combining apple cider vinegar and water. Or abruptly switch the hue of your hydrangeas from pink to blue. Oh, and what about pearls dissolved in vinegar?
Pearls were dissolved in vinegar and consumed by Cleopatra to display her wealth, likely making the acidic beverage the most expensive beverage ever. Speaking of bittersweet.
Paul Barbano, who lives at Rehoboth Beach, writes about gardening there. You can write to him at PO Box 213 in Lewes, Delaware 19958.
Are hydrangeas turned blue by epsom salt?
A: I’ve been considering the idea of using Epsom salts to intensify the blue hue of hydrangeas. I would like to attempt this as I have an old box of Epsom salts, but the term “salt” raised a cautionary signal. What percentage should I use?
A bitter salty spring in Epsom, England, where the water includes magnesium sulfate in solution, is where the name “Epsom salt” originates.
The term “salt” in chemistry simply refers to the outcome of an acid-base reaction. By combining sodium hydroxide and hydrochloric acid, sodium chloride (table salt) is created. The reaction between sulfuric acid and magnesium metal produces epsom salt.
Some salts, such as salt cod or Virginia ham, are particularly hydrophilic; they dry and preserve the materials they are placed with. Epsom salt does not absorb water from its surroundings since it is already hydrated.
The pH of the soil is left unchanged by the dissociation of the ions in Epsom salt. Since the metal that gives hydrangeas their blue hue is only present in acidic soil, adding Epsom salt won’t modify the color of your blossoms. Two tablespoons of alum (aluminum sulfate), which is acidifying, would have the desired impact on each plant.
Can you plant early blue hydrangea outside?
“For Mother’s Day, my daughter handed me a lovely hydrangea. It has done so wonderfully that I’m curious if I should plant it outside or keep it within as a houseplant.”
Hydrangeas with foil encircling the pot, whether they were a gift or something you bought yourself, frequently differ from those bought at a nursery. The foil-wrapped hydrangea is often grown for a single, grand performance. The plant has been specifically fed to produce a lot of huge blooms quickly, frequently at the price of the plant’s long-term health.
The hydrangeas selected for this project are exclusively grown in greenhouses and might not be winter hardy where they are purchased.
If your locale isn’t warm enough to cultivate hydrangeas outdoors, you might wonder if you can grow them indoors as a houseplant.
A. There are a variety of reasons why growing hydrangeas inside in a home environment is not particularly successful. When hydrangeas may experience a period of dormancy brought on by chilly weather, they thrive. Hydrangeas rarely blossom indoors, attract insects, and lose their leaves unless they are in a greenhouse. They frequently dry out too rapidly and wilt, which makes them weaker.
However, some gift/florist-type hydrangeas may be grown extremely well in the landscape, as you can see from the images below.
Although growing hydrangeas indoors is not the optimal answer, it is conceivable if one lives in an apartment or in an area where they cannot survive:
1) Put the hydrangea in the coolest part of your house; ideally, an unheated room.
2) Position it close to a window so that it receives the most light possible.
The third and most crucial tip is to not overwater the plant by letting it sit in water or by watering it too frequently. It’s preferable to keep it dry during the winter, but it shouldn’t ever get too dry that it wilts.
Whenever possible, it is ideal to plant the potted hydrangea outside. It should only be planted outside in the early to mid-summer because it needs time to get used to the weather before winter.
In conclusion, unless it may be planted in the garden, foil-wrapped hydrangeas are best employed as a temporary plant in a person’s home.