Planting Tips. Hydrangea macrophylla, best known as the mophead hydrangea, is one of the easiest varieties for growing indoors. Learn more about how to grow hydrangeas in pots. Rarity . macrophylla flowers on either old or new wood, depending on the cultivar, and are highly sensitive to the pH of the soil. 5, which is ideal for overall nutrient absorption. Hydrangea leaves are possibly turning brown and possibly foliage growth with few flowers. Establish your potted hydrangea in a place that gets morning sun or sustained southern-facing sun for about four hours but keep the plant out of direct sunlight. Bloom on new wood when plant is at least two years old. Water regularly, when the top inch of soil feels dry. Hardiness Zone: 4-9. 3-. There are a number of easy techniques for growing a hydrangea from cuttings, including: Take 10cm soft-tip cuttings in October/November. In this article, coastal gardening expert and hydrangea enthusiast Jill Drago outlines each step for planting, growing, and caring for smooth hydrangeas. Borne on strong, sturdy stems, the blossoms create a colorful show that extends well into the fall. Huge, football-shaped flowers open in an elegant celadon green that looks fresh and clean in summer's heat. Watering top down will encourage fungal disease, and potentially harm the plant. A faster option is to do a repeated liquid soil drench in March, April, and May. 180 inches. A recent addition to the Endless Summer series, Hydrangea macrophylla Endless Summer® BloomStruck® is another exceptional mophead cultivar with medium-sized, rounded flower heads, up to 5 in. Water them regularly during dry spells, letting the soil dry out a bit between deep waterings. Pick Remaining Flowers. 'Rio' Hydrangea macrophylla. Providing interest almost all year round, Hydrangea quercifolia (Oak Leaf Hydrangea) is a medium-sized, multi-stemmed, deciduous shrub of dense, rounded habit. See our Hydrangea Growing Guide for information on how to care for these flowering shrubs, including pruning and winter protection. Use your finger to feel into the soil around the base of the plant and check for dryness. Continue to 9 of 10 below. Mix in a slow-release fertilizer. White flowers transform to pink-red as summer progresses. Another is to turn on your hose to a slow trickle. A number of common ornamental shrubs are in the family including sweet mock orange ( Philadelphus coronarius) and panicle hydrangea ( H. Make sure to keep your arrangement out of direct sunlight. Height and spread: 100cm (39"). Description and Growth Habit: H. Endless Summer® Hydrangea Shrub. Next, dig a shallow hole a few inches deep and lay the hydrangea branch in it. " 'Grandiflora' is easy to grown and reaches a mature size of 10 to 20 feet tall and wide. The main differences between the two are the size and the hardiness. Propagating Smooth Hydrangea. [2] Common names include bigleaf hydrangea, French. Brown stems have started to harden off and can be a little tougher to root compared to the green ones. Masses of fragrant white flowers held in flattened clusters, up to 8 in. Mopheads will blanket an awkward slope. The petals are attached above the ovary and contain 4 united carpels (can be 2-5). Opening creamy white with some lime green flushing in midsummer, the florets turn soft to deep pink as fall approaches. Using a pair of clean and sharp pruning shears, make a clean cut just below a leaf node (the point where a leaf attaches to a stem). Water the plants sparingly to prevent the dormant plant's roots from sitting in water, adding just. Planting Instructions. Soils that are more acidic, below 5. Ailing hydrangea symptoms often start at the leaves, even if the affecting disease is root or insect based. Backfill the hole, and cover the branch with garden soil. Plant in rich soil that is moist but well-draining. Typically. Hydrangea macrophylla (also called French Hydrangea, florist’s Hydrangeas or Hortensia) is the variety that most people think of when they hear the word Hydrangea. Your cutting should be 2 inches below a pair of leaves, to leave space for the plant to take root. Hydrangea, Oakleaf Hydrangea. Hydrangea L. The flowers are borne above the handsome foliage of bright green, elliptic, slightly serrated leaves. Plant in well-draining soil with plenty of organic matter. Trying to change flower color. tall and wide. 9 Gorgeous Hydrangea Types. Prune Snowball Hydrangea in Late Winter. Introduced. What Are Hydrangeas? Blooming in spring and summer, the hydrangea is considered a shrub. The water should be evenly distributed at the roots, and never over the top of the plant. It prefers morning sun and afternoon shade, neutral to acidic soil with good drainage, and is air pollution tolerant and cold hardy. Hydrangea paniculata is a sun-loving plant native to the cool regions of Asia that produces large, cone-shaped flowers. Here is how to increase your collection. To grow tardiva hydrangea, follow these basic principles of care for this plant. Blossoms grow into the popular snow-ball shape in shades of pink, red, and blue. Water. Do not over water, or over fertilize, but be attentive. Buy Plants. Dig up the rooted section from the ground. Place your plant in the middle of the hole. Water the area thoroughly. Caring for Tree Hydrangea Plants. As a first step, trim off any infested foliage. Limit any drastic pruning to early spring, just before new growth emerges. Climbing Hydrangea, Hydrangea. Zones 5-9. White Dome Hydrangea @ritae / pixabay. The perennials have stunning foliage and blooms, and are mostly fuss-free. Daylilies. hydrant: [noun] a discharge pipe with a valve and spout at which water may be drawn from a water main (as for fighting fires) — called also#R##N# fireplug. Oakleaf hydrangea is more drought-tolerant than other hydrangeas. Water deeply. This type of hydrangea has white blossoms. Low maintenance and easy to grow, this hardy hydrangea can be used as a hedge,. Compared to its famous sibling ‘Limelight’, Little Lime hardy hydrangea ( Hydrangea paniculata) may seem like a pipsqueak. across (30 cm), that brighten shady areas and bring life to the garden. Leave about eight inches open at the top of the pot, then mix some high-phosphorus fertilizer into the soil. ‘Incrediball’ is a hybrid of ‘Annabelle’ and other Hydrangea arborescens varieties with the goal of stronger stems. Exceptionally hardy and reliable, Hydrangea paniculata Fire Light® is a striking deciduous shrub boasting huge flower heads from midsummer to fall. Cover the soil surface with 1 to 2 inches of mulch, avoiding the area closest to the stem to avoid fungal issues. When growing hydrangea as a houseplant, a period of dormancy during fall and winter is recommended. (60-120 cm). Its flattened clusters of 2- to 6-inch wide greenish white flowers appear from late spring through summer. "Incorrectly adjusting the soil pH can. Where to grow hydrangeas (Image credit: Leigh Clapp) Hydrangeas grow best in well-drained soil, in a protected, dappled shady spot. One of the latest hydrangeas to bloom, Hydrangea paniculata 'Tardiva' features upright, sharply pointed, conical panicles with the bulk of their sterile flowers loosely packed near their base. The fruit matures as a capsule with many dust-like seeds. Characteristics: These popular shrubs bloom from mid-summer to early fall. Line your front steps with pots of bright blue hydrangeas for a cheery welcome. From Cuttings. quercifolia) or climbing hydrangea (H. Climbing Hydrangea – A vining variety of the plant, climbing hydrangeas can grow to be 50 to. long (15 cm), in midsummer to fall. It grows best in part shade in Zones 3 to 9. Secure the main stem with a bamboo stake and use gardening tape or ties to keep it upright and straight. To make your Hydrangeas blue, you first need to test your soil to determine the pH level. While this is a task that takes quite. Showing 1 - 20 of 22 items. Fill several small pots or a larger pot with loose, sandy potting mix. It reaches just 1-2. To propagate softwood cuttings, follow these steps (as long as it's not a trademarked cultivar): Take a 5-inch stem cutting and remove the lower leaves. Here is a guide to all things hydrangea: a description of the different types, how to. macrophylla) – Bigleaf hydrangea is an attractive shrub with shiny, toothed leaves, a symmetrical, rounded shape and a mature height and width of 4 to 8 feet (1-2 m. These are not actually considered hydrangeas though, the plants just closely. The “ lacecap ” version of this species. Vanilla Strawberry™ Hydrangea Shrub. Since hydrangea blossoms are so big, deadheading a hydrangea makes a real difference in diverting energy to more important parts of the plant’s growth. Place the plant in the hole and backfill around the roots with soil. 3½' tall and 5' wide. long (12 cm), in late summer to fall. Tough, cold-hardy, easy-care, long-lived, it is laden with large, conical, snowy flowers from midsummer to fall. 5. Bobo ® - dwarf (3’ tall and wide), lacy white flowers turn pink, best color and blooming in cooler climates. Hydrangea anomala looks like a plant from a different family altogether, but is a member of the hydrangea family. If possible, plant them in an area that gets some afternoon shade in climates with hot summers. Smooth hydrangea can be grown in full sun or dappled shade (the. Selections like 'Annabelle' are stunning and produce huge flower clusters. This plant is easy to change color and has beautiful sky-blue flowers with green centers. "Maturing to a height of 6' by 6', Tara's cloudlike blooms rest atop elegant oak shaped leaves that take on a rich red hue in fall," says McConnell. And if your flowers are looking sad, Bladow suggests soaking the entire hydrangea in cool water for about 45 minutes. nitty gritty™ roses. Make sure the pot has drainage holes and has room for the plant to grow. Shake them off, cut the bottom of the stem, and place them in water with flower food. Dozens of species exist. A south-facing window is ideal. Place in a sunny spot and wait for around 14 days for germination. 8. Hydrangeas add gorgeous flowers and dimension to your garden and landscape. Oakleaf hydrangeas thrive in the shade and won't bloom in full sun, while panicle hydrangeas love to soak up the full sun and won't bloom in the shade. Water your new planting thoroughly. Hydrangeas are one of the most popular landscape shrubs in the US. Next, carefully strip off most of the leaves, leaving a pair at the tip of the cutting. Tease the roots with your fingers or a garden fork to loosen them and encourage outward growth. How to Deadhead Bigleaf and Oakleaf Hydrangeas. (Image credit: Getty Images) Aucuba japonica ‘crotonifolia’, also known as Japanese or spotted laurel, can grow in partial or full shade. Bred in Georgia to handle the heat, compact Hydrangea paniculata Little Hottie® puts on an impressive and outsize flower show even as the mercury rises. Use a small pot with sterile. Prune Hydrangea macrophylla and Hydrangea serrata in mid-spring, others in early spring. Dissolve 1 tablespoon of aluminum sulfate for blue. How to Grow Hydrangeas in Pots. Blooming profusely from midsummer to fall, the charming blossoms are. Bill Stites/EYESWEET INC. Image . Grows with an upright, rounded habit to 3-4 ft. The method for deadheading hydrangea blooms depends. Back fill in the hole with the soil, tamp down the soil gently around the plant, and feed with some balanced fertilizer. Once established, hydrangeas should be watered about one inch per week, spread across 3 watering sessions. Matthew Benson. They prefer sun in the morning with. It produces blooms in a multitude of show-stopping displays of pinks, blues, and everything in between. Plant in spring or autumn in moist soil that drains well. Popular named selections: 'Annabelle,' 'Bella Anna,' 'Grandiflora,' 'Incrediball,' 'White Dome'. ‘Limelight’ – full-sized, green flowers turn burgundy-pink, fairly late to bloom. long (15 cm), from mid-summer to fall. It should be deep enough so that where the plant meets the soil is flush to the ground. [1] Like other Hydrozoans they are colonial. Here are the main care requirements for taking care of hydrangea flowers: 1. Dark green foliage complements the massive round flowers held on sturdy stems above the leaves. If you're trying to revive multiple stems at once, weigh down the stems in the water with a lightweight plate so they stay completely submerged. Adding early. Fire Light ® Panicle hydrangea . Wild hydrangea is a member of the Hydrangeaceae, the Hydrangea family. Flowers can be used in fresh or dried arrangements. Remove last year’s flowerheads using a pair of the best pruning shears. Showy, the creamy-white florets become pink-tinged as fall approaches. Plants reach 3 to 4 feet high. Other Hydrangea species will remain the same color no matter the conditions. Cut branch from the mother plant. Some form their flower buds on old wood, meaning next year’s buds are already present on the branches in fall and winter. The flowers are white, though some age to a pinkish hue. You may hang the cut bloom upside down or in a vase with just a few inches of water. To turn them pink, add garden lime. 8. Remove the plant from its container, and set it in the center of the hole. Hills-of-Snow hydrangea (Hydrangea arborescens ‘Grandiflora’): Commonly used cultivar is admired for its large, clean, white flower clusters. Flare Hydrangea bloom on new wood, so trim as needed in the fall after the flowers fade. Also known as peegee hydrangea. Hydrangea comes in three forms: vine, shrub and tree. This hardy hydrangea. Others form their flower buds on new wood. While maintaining its short stature of 3-5’ tall and wide, it really packs a visual punch in the garden. The occurrence of these toxins throughout the genus is poorly known, so other species of Hydrangea should be treated with caution and not consumed. HGTV shares how to plant hydrangeas and hydrangea care tips, plus discover new varieties. Hydrangea paniculata 'White Diamonds' is a compact, bushy, deciduous shrub boasting glistening white flower panicles in mid-summer. Keep the blooms out of the sun in a well-circulated area. It is not necessary to prune climbing hydrangea, except to manage its growth. Apply the product around the base of the plant and work it into the soil with a rake or a cultivator. Depending upon the cultivar, of which there are many, the plant produces ball-shaped flower clusters ("mop-heads") or flat clusters of small flowers surrounded by a ring of more prominent. Cover the soil surface with 1 to 2 inches of mulch, avoiding the area closest to the stem to avoid fungal issues. The shrubs are multi-stemmed and grow in an upright habit. To propagate Wedding Gown hydrangea, take stem cuttings in early summer from semi-hardwood that contain 2-3 nodes. 6. If you live in the south, give the plant some shade in the hot afternoon hours. Annabelle hydrangea is propagated with softwood cuttings taken in spring. Laurey W. Hydrangea macrophylla by Abraham Jacobus Wendel, 1868. Once the germinated seeds are big enough to handle, transplant them to their spot outside in the fall. It is a deciduous shrub with green foliage with white flower. Plant Size: 4-5 feet. If exploring slow-release granular fertilizer, choose one. Though flowering bushes in bright shades of pink, blue, and purple are most common, newly introduced varieties offer a wider range of color and. Light/Watering: Most varieties tolerate full sun in the North, but benefit from afternoon shade. Hydrangea serrata 'Hydrantea' is easy to grow and makes a lovely addition to ornamental borders. Hydrangea (Hydrangea macrophylla) What is a hydrangea? Hydrangeas are either deciduous or evergreen shrubs, trees, or lianas native to the Americas and Asia. See this plant in the following landscapes:Spread: 4 to. Maintaining such a narrow pH range is easier to do with container culture than in the ground. It offers a long season of interest with dense, conical flower heads filled with large, white ray florets that turn pink in fall. Oak leaves work well because they do not settle as easily as other. It's an upright, multi-stemmed shrub with a loose, open branching habit. Beyond flowers, these amazing shrubs offer additional ornamental beauty from neat and inte. They fill gardens with their green, leafy foliage and incredible blooms during the warm months. Learn more about these show-stopping bloomers, including how to grow and care. Smooth Hydrangea suckers freely, creeping over large areas. ). Nikko blue hydrangeas grow to be around 6 feet tall, with a similar spread. hydrangea. If you’re lucky enough to have a few flowers still on the plant, cut them now to bring their beauty indoors. A favorite of many gardeners – and deservedly so – Hydrangea arborescens ‘Annabelle’ (Smooth Hydrangea) is an outstanding flowering shrub. Use a brick or stone from your garden to keep the branch in place. If you're in a warmer zone (8-9), you might want to limit the amount of. Flower Color:White/ Green. Flower color is determined indirectly by the soil pH, which affects the availability of aluminum in the soil. Hydrangea paniculata (tree hydrangea, panicle hydrangea): Growing 8 to 15 feet tall with white. The name hydrangea is derived from Greek and Latin and taken to mean water vessel, in reference to the "cup-like form of the seed-capsule. The pointed leaves have serrated margins—typical of all hydrangea leaves. Gently loosen the sides of the root ball with your fingers. Dreamin' is a genuinely unique hydrangea macrophylla. This one grows shorter and more compact and offers the same color-changing ability as French hydrangea. by series. Leave 1 to 2 inches between the top of the soil and the rim of the pot for watering. Growing Zones: 4-8. macrophylla varieties feature tiny lacelike flowers surrounded by larger blossoms – these are commonly known as lacecap hydrangeas. Add soil around the root system and tamp it down as you go. Add plenty of organic matter (such as compost) around the plant. Its leaves add fall interest when they transform to lush shades of mahogany and purple. We recommend pine straw, oak leaves or wood mulch. Add a thin layer of mulch to help preserve moisture. Taking cuttings is a good way to clone your favorite panicle hydrangea. Part of the Hydrangeaceae family, the Hydrangea genus is nothing if not diverse. Look for the “broccoli,” Lorraine says. If your soil has an abundance of nitrogen, your hydrangea may have lush green growth and no flowers. Pinky Winky ® H. With fantastic, large flowerheads in colors of blue, lime green, mauve, pink, red, and white, they showcase an old-fashioned beauty that begs to be seen and admired. camellia collection. While it can seem tedious, protecting your potted hydrangeas against the winter winds, cold, and frost. Cuttings should be three to five inches long and contain at least three sets of leaf nodes. USDA Zone: 3 to 9. With a diverse selection of growing habits and flower structures, hydrangeas are some of the most iconic flora in North America. Add a layer of potting mix and compost, enough so that when you place the hydrangea in the pot, the top of the root ball sits slightly below the rim of the container. Give the hydrangea a thorough soaking at the base daily for the first. The large flowers on this little Hydrangea are. They bloom in early summer on old wood, so prune big-leafy hydrangeas after flowering. 5 and 6. Scrape some of the bark off of the branch, exposing some growth points. These thirsty plants will quickly start to droop if they don’t receive enough water, so check them daily, particularly during hot or dry spells. Hydrangeas are versatile shrubs that thrive in sandy coastal soils, shady woodland sites, and almost everything in between. Hardy in zones 3 to 9; takes part sun to sun. Name: Cityline Mars hydrangea ( Hydrangea macrophylla Cityline 'Mars') USDA Hardiness Zones: 5-9. Limelight (Hydrangea paniculata. Most selections feature lacecap flower clusters – small, fertile flowers in the center ringed by. This hydrangea species loves the sun, whereas the rest prefer partial shade. STEP 1: Identify which type of hydrangea you have. Best in light shade, but tolerates sun if the soil is not too dry. hydrangea. This is an American variety and can withstand drought better than the Asian types. 'By cutting stems to different heights, you’ll get flowerheads produced at different levels,' advises Sarah Raven. Maintenance matters. The two kinds of hydrangeas offer different looks to a garden. Yellowing leaves is a common issue with hydrangea gardeners. Features. There are five types of hydrangeas: bigleaf or French hydrangea, smooth (tree) hydrangea, panicle, oakleaf, and climbing. Endless Summer 'Twist-n-Shout' Hydrangea macrophylla. Planting hydrangeas in pots: Use a bagged potting mix rather than garden soil. It yields white flowers and has excellent frost and heat tolerance. The fertile flower parts are much smaller, less. Blooming from mid to late summer, the glowing blossoms retain their color for a long period before taking on a metallic. This will usually occur sometime in late summer. Crush the ends of the hydrangea stems as you typically would, until the stems are mushy. Once the germinated seeds are big enough to handle, transplant them to their spot outside in the fall. A dependable performer, this hydrangea cultivar raises the bar with snowy white flowers up to a foot wide, starting in June and lasting until frost. Its large lace-cap flowers make a showy summer display, ranging from pink to mauve-blue depending on the acidity of your soil. Also known as peegee hydrangea, panicle hydrangeas produce football or cone-shaped flower clusters in mid-to-late summer. Water regularly, when the top inch of soil feels dry. After a few days, shake the bag to get the seeds. Unlike other hydrangea types, the soil pH does not affect Limelight's bloom color. Method 3. Grows up to 36-48 in. This name comes from the fact that hydrangeas require a lot of water. Choose a location that gets sun in the morning but has some shade during the heat of the afternoon. If your chosen hydrangea is a variety with large leaves, you can also trim the remaining two. Perfect for small gardens, Hydrangea paniculata Fire Light Tidbit® is an incredibly compact deciduous shrub boasting a profusion of big, lush panicles from midsummer to fall. It may feel like you’re back in your. - Flowers go from white to rich, saturated tones of pink and red as they age. You may need to water slightly more, and more frequently. It's cold-hardier too, and its leaves turn burgundy in fall. The occurrence of these toxins throughout the genus is poorly known, so other species of Hydrangea should be treated with caution and not consumed. If space is tight in your yard, you can still enjoy lush hydrangea blooms with a small variety such as Let’s Dance 'Rave' reblooming hydrangea (above), which grows 2 to 3 feet tall and wide. The hydrangea Runaway Bride has received accolades as the plant of the year for 2018 at the RHS Flower Show. The main differences between the two are the size and the hardiness. These plants prefer moderate climates, with most growing best in USDA Zones 3. Not only are these plants much hardier, growing well from zone 3 to zone 8, they will grow taller, with some reaching as much as 15 feet, but most being around 6 feet tall. long (20-30 cm), from late summer into fall. Daylilies grow quickly and come back year after year, just like. Climbing hydrangea is a handsome woody vine that clings and climbs by attaching itself with tiny rootlets to a wall, trellis, or other support. 13. Bigleaf Hydrangeas (includes Mophead and Lacecap) mature to a height and width of about 10 feet. Add plenty of organic matter (such as compost) around the plant. Its flowers are produced on old wood from last year’s growth. How to Plant Hydrangea Flowers. Trim an inch off the ends of the stems and submerge wilted flowers in a bucket, bowl or sink filled with cool water. 節. 3. Prune your hydrangea to increase airflow and disinfect your pruning shears to avoid spreading the fungal spores. Endless Summer 'Bella Anna' Hydrangea macrophylla. Begonias come in many different colors and love a shady spot, making them the perfect companion for hydrangeas. Water Hydrangea ‘Bella Anna’ with soft water: rain or settled. The plant reaches 3 to 6 feet tall. evolution™ coneflowers. Hydrangea paniculata 'PeeGee' is a vigorous shrub or small tree for full sun that can grow up to 20 feet tall and 8 feet wide. Take a stem cutting around 5cm long that has a plump bud, and treat as above. Hydrangea serrata is native to the mountains of Korea and Japan, making it an excellent woodland plant or even a good option for a shaded rock garden. Sprinkle them on the seed-raising soil and moisten them with a spray bottle. Its early bloom time will. Pick the Flower Hue You Want. Dig a hole twice as deep and as wide as the pot so the plant has enough room to grow. Low plants can look great as hydrangea plant companions. Hydrangea ( Hydrangea macrophylla ), sometimes called French hydrangea, is a large shrub with beautiful masses of color. ) of organic compost before planting to enrich the. Proper hydrangea care will help your favorite summertime shrubs look their best. Camellias Hydrangea macrophylla, or bigleaf hydrangea, and to a certain extent H. To plant, set your young hydrangea into the prepared hole. Set plant in the hole and backfill with existing soil. Causes of yellowing hydrangea leaves are too much water, iron deficiency, and too high of your soil pH. Be sure to check if your plant is old wood or new wood before you get out the pruners. Care for hydrangeas by giving them full sun in moderate climates and morning sun in hot areas, humus-rich soil when possible, and consistent moisture without waterlogging the plant. Water them during a drought, especially if you notice wilting. A good all-purpose 12-4-8 or 10-10-10 composition will provide all the fertilizing hydrangeas need. It will help you keep the plant thriving long term. Fertilizing: In early spring, apply a granular fertilizer specially formulated for trees and shrubs according to package instructions. Use an approved fungicide if necessary. The plant blooms best in full sun, at least 6 hours. Like most potted plants, watering will depend on how fast the soil dries out and if it's in bloom or not. As that happens, water molecules in the ground freeze (contract) and then melt (expand), disrupting the root system (heaving). By far the greatest species diversity is in eastern Asia, notably China, Korea, and Japan. Mulch helps alleviate those dramatic changes to protect the plants. Hydrangea anomala petiolaris. It will grow only 3 to 4 feet wide and 4 to 5 feet tall, but what it lacks in size it makes up for in vibrant, showy blooms throughout the season. Shelter from cold, drying winds. Growing from five to six feet high and wide, this shrub is more compact in nature than other oakleaf hydrangeas. If you want to attempt propagating hydrangeas in water, the steps are the same up until dipping the stem into rooting powder. Hydrangea paniculata 'Pink Diamond' is a vigorous, bushy, deciduous shrub boasting huge conical flower panicles, 8-12 in. Big-leaf hydrangeas, Hydrangea macrophyla: These are the most common species and include the popular mopheads and lacecaps in wide-ranging colors of blue, violet, pink, purple, red and white. It blooms about a month earlier than any other cultivars of Hydrangea paniculata, starting in early to mid-summer depending on the local climate, and continuing throughout the summer and into the fall. Flower Color: Pink, red, yellow, orange, white. This hydrangea will grow up to 5 feet tall. Avoid these by spacing plants to allow for air circulation and avoid getting the leaves wet, especially late in the day. The simplest method is to mound shredded leaves or bark mulch around the base of the plant to about 12 inches or so. You may hang the cut bloom upside down or in a vase with just a few inches of water. Set plant in the hole and backfill with existing soil. The ideal pH is between 5. Since the 'Pistachio' hydrangea is a reblooming variety that flowers on both new and old wood, little pruning is required. 2. wide (60-90 cm). Firm the soil in around the rootball. Keep the blooms out of the sun in a well-circulated area. Gatsby Gal. The best soil. Plant Zone: 3-8. The myth, the legend, the plant: 'Limelight' hydrangea. Hydrangea paniculata ‘Little Lime’ – These summer flowers start out green and turn pink by autumn. Oak-leaf hydrangeas. Hydrangea paniculata 'Grandiflora' grows to 25 feet with a 10-foot spread and has pure white flowers.