This spot should also be large enough for the full size of the plant. Hydrangeas are versatile shrubs that thrive in sandy coastal soils, shady woodland sites, and almost everything in between. It's best to test the soil's moisture level 3 inches into the soil. Oakleaf Hydrangea – If you live in an arid part of zone 9, such as California, the oakleaf hydrangea is a good choice. Most popular is the fully hardy. Take a stem cutting around 5cm long that has a plump bud, and treat as above. Meanwhile, the Japanese call hydrangeas ‘Ajisai’ which means ‘the water drinker’. 08 of 26. アジサイ属 （あじさいぞく、学名: Hydrangea ）は、 被子植物門 ミズキ目 の1属。. Some hydrangea species bloom on “new. Planting in Dry, Poorly-Drained Soil. Space most French hydrangeas three to four feet apart, but check the tag to see how wide your selection will grow. Hydrangea with drooping or wilting leaves and flowers. peony collection. Despite the common name “French Hydrangea,” this species is native to Japan. macrophylla flowers on either old or new wood, depending on the cultivar, and are highly sensitive to the pH of the soil. Garden Plans Hydrangeas can flourish in sun or shade. Planting. Paniculatas dependably bloom on new growth every year in mid-summer, and the show is spectacular. Panicle hydrangea blooms on new wood; it accepts—and even prefers—fairly heavy pruning. Its foliage is spectacular even without the massive, upright, 12-inch blossoms. Yep, there’s such a thing as a hydrangea vine that can be grown as a groundcover or trained to grow on a trellis or fence. H. Hydrangea bushes are a long-time favorite of ornamental gardeners, as well as professional landscapers. See our Hydrangea Growing Guide for information on how to care for these flowering shrubs, including pruning and winter protection. Water them regularly during dry spells, letting the soil dry out a bit between deep waterings. Read on for more oakleaf hydrangea information and tips on how to care for. Caring for this shrub is fairly easy. The iconic “snowball” shaped blooms of Hydrangea macrophylla (big-leafed hydrangea) are a common staple of backyard gardens. Scrape some of the bark off of the branch, exposing some growth points. This hardy hydrangea. 節. Native and Introduced. After the boiling water trick, you can put the cut hydrangea flowers back in the bucket of water up to their. It includes over 70 species of deciduous and evergreen shrubs, as well as a few small. Hydrangea varieties. Loosen the soil at the bottom of the hole to allow for better root growth. In early summer, this small, bushy deciduous shrub produces huge, rounded flower clusters, up to 12 in. The hybridizers were successful and ended up with a plant with very strong stems that will support their flowers and remain upright. Add plenty of finished compost and organic matter to the soil to enrich and lighten it. For the first option, remove one third to one half of each shoot, cutting ¼ inch above a pair of leaf buds each time. Lacecap hydrangeas are a smaller group (belonging to the same species), which have more flattened flower heads, where the. Place your hydrangea in the pot, fill in with soil around it, and water well. If your hydrangea shows signs of dryness (like drooping leaves. Hincks, 1868. Protect your in-ground hydrangea in winter by making a frame around the plant using stakes. 09 of 10. When soil pH is 6. While this is a task that takes quite. Hydrangea leaves are possibly turning brown and possibly foliage growth with few flowers. serrata is similar in appearance to H. Several cuttings can be rooted in one larger pot. long (15 cm), in midsummer to fall. Then place the hydrangea in. It should be deep enough so that where the plant meets the soil is flush to the ground. The 'White Dome' hydrangea is an upright, rounded shrub that bears fluffy clusters of creamy-white flowers. 3½' tall and 5' wide. Fertilizing Hydrangeas. Over the next year or two you will want to baby your hydrangea. Causes of yellowing hydrangea leaves are too much water, iron deficiency, and too high of your soil pH. The Royal. They are easy to grow,. From late spring to midsummer, it boasts large, magnificent, conical flower heads, up to 12 in. Planting hydrangeas in pots: Use a bagged potting mix rather than garden soil. This is the species where. If you wish to propagate your hydrangea tree, you should cut off a 6-inch, new growth from the tree in the fall. These are not actually considered hydrangeas though, the plants just closely. This is a wonderful dwarf form of the popular Quick Fire™ hydrangea. Grows with an upright, rounded habit to 3-4 ft. The cultivar ‘Limelight’ has most commonly been grown in its natural shrub form, growing to a mature size of 6-8 feet tall and wide. Mass or group in shaded area of the mixed shrub border or naturalize in native plant or woodland garden. Hydrangeas are one of the most popular landscape shrubs in the US. 'Rio' Hydrangea macrophylla. The thin strappy leaves of ornamental grasses make them appealing companion plants for hydrangeas. Size: 3 to 6 feet tall and wide Zones: 4-9 14 of 14. The Limelight hydrangea tree is perhaps the most popular variety of hydrangea tree available. 5 ( alkaline ), the flowers will be pink. Cuttings should be three to five inches long and contain at least three sets of leaf nodes. "Hydrangea Shrubs. Secure the main stem with a bamboo stake and use gardening tape or ties to keep it upright and straight. The main differences between the two are the size and the hardiness. Limelight (Hydrangea paniculata. A thriving hydrangea bush stretches 3 to 5 feet up and across, producing many blooms during its long flowering period. tall (90-120 cm) and 24-36 in. It grows best in part shade in Zones 3 to 9. topiary collection. 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. 5. This type of hydrangea has white blossoms that turn light green later in the. Choose a container that is just a little larger than the pot in which it came. Line your front steps with pots of bright blue hydrangeas for a cheery welcome. The smooth hydrangea ( Hydrangea arborescens) is native to eastern North America. Water thoroughly at the base of the plant, let the water soak in, and water again. The word “hydrangea” gives a hint why. As a first step, trim off any infested foliage. Avoid tips that are developing flower buds, because those will likely not root. The 6 to 8-inch flower heads are not as large or symmetrical as the cultivar ‘Annabelle’ hydrangea, but they contrast well against the dark, serrated foliage. Dig a hole about twice the size of the container. Fill with potting soil to the bottom of where the plant will sit. In summer, lime green blooms open on strong stems – no. serrata. Leave about eight inches open at the top of the pot, then mix some high-phosphorus fertilizer into the soil. Hydrangeas add gorgeous flowers and dimension to your garden and landscape. Perhaps the best known of the hydrangeas is the mophead style of Hydrangea macrophylla. The occurrence of these toxins throughout the genus is poorly known, so other species of Hydrangea should be treated with caution and not consumed. Place your hydrangea pot in a sunny spot. Pick the Flower Hue You Want. Your hydrangea will need frequent watering in warm weather; check the container for moisture daily. A favorite of many gardeners - and deservedly so - Hydrangea macrophylla Endless Summer® The Original is an exceptional mophead cultivar for 2 reasons. Its color is deep pink/red in alkaline soil and tends toward purple in acidic. About 23 species are known. Water them during a drought, especially if you notice wilting. One of the world’s most popular ornamental flowers conceals a bouquet of biological and biochemical surprises. Most shrub-form hydrangeas sold in North America fall into one of five types: bigleaf, mountain, smooth, panicle and oakleaf. Characteristics: These popular shrubs bloom from mid-summer to early fall. The hydrangea Runaway Bride has received accolades as the plant of the year for 2018 at the RHS Flower Show. Water it thoroughly. Here are the main care requirements for taking care of hydrangea flowers: 1. Next, dig a shallow hole a few inches deep and lay the hydrangea branch in it. Changing flower color 6. tall (90-120 cm) and 5 ft. The water should be evenly distributed at the roots, and never over the top of the plant. 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. Best in light shade, but tolerates sun if the soil is not too dry. A faster option is to do a repeated liquid soil drench in March, April, and May. Hydrangeas look fantastic in cut flower displays at any time of the year. camellia collection. Mulching can also help to keep the roots moist. Quick Fire hydrangea is an eye catching shrub with several outstanding features. Ruby SlippersOakleaf Hydrangea. When the soil has a pH higher than 6. Take a stem cutting around 5cm long that has a plump bud, and treat as above. Name: Cityline Mars hydrangea ( Hydrangea macrophylla Cityline 'Mars') USDA Hardiness Zones: 5-9. Adding bone meal is a great way to increase the phosphorus in the soil. Incrediball. Propagating Smooth Hydrangea. October 14, 2023. Blue-flowered florists' plants may show pink. Here is a guide to all things hydrangea: a description of the different types, how to. USDA Zone: 3 to 9. Borne on strong, sturdy stems, the blossoms create a colorful show that extends well into the fall. Remove the plant from its container, and set it in the center of the hole. Watch the edges of the leaves. Hydracyanosides, a group of toxic cyanogenic glycosides, have been isolated from the leaves of Hydrangea macrophylla. Annabelle hydrangeas are more cold hardy than mophead or oakleaf hydrangeas, can still grow in zone 3. The perennials have stunning foliage and blooms, and are mostly fuss-free. Leave only the top two leaves and dip the cut end in a rooting hormone before sticking it in damp soil or another potting medium. A. Hydrangea paniculata with whorled leaves. If your soil has an abundance of nitrogen, your hydrangea may have lush green growth and no flowers. Hydrangea serrata 'Hydrantea' is easy to grow and makes a lovely addition to ornamental borders. Providing interest almost all year round, Hydrangea quercifolia (Oak Leaf Hydrangea) is a medium-sized, multi-stemmed, deciduous shrub of dense, rounded habit. anomala ssp. hydrangea. Dozens of species exist. Native to China and Japan, Hydrangea paniculata (Panicle Hydrangea) is a deservedly popular deciduous shrub. Start by removing any dead, damaged, or diseased branches with clean, sharp pruning shears. 5 will tend to result in blue hydrangea blooms, while above 6. With the proper growing conditions and care for hydrangeas, they can be grown in a wide range of regions. Little Lime ® – dwarf (3-5’ tall and wide) version of Limelight; blooms earlier and has better fall color. In acid soils, the flowers will be blue, but in alkaline soils, the flowers will be pink. This type of hydrangea has white blossoms. "Also, removing broken and damaged stems. Hydrea may cause serious side effects. Pick Remaining Flowers. Panicle Hydrangea Propagation. (Image credit: Getty Images) Aucuba japonica ‘crotonifolia’, also known as Japanese or spotted laurel, can grow in partial or full shade. Hydrangea leaves: ‘Nikko Blue’ lustrous medium green leaves are an obovate to elliptic shape measuring 4” to 8” (10 – 20 cm) long. It can take up to a year for the soil pH change to take effect and show in the flower color of your hydrangea. Name: Begonia ( Begonia) USDA Hardiness Zones: 6-9. Remove the plant from its nursery pot and place it in the container. sun requirements Partial Sun to Partial Shade. Set plant in the hole and backfill with existing soil. Place your hydrangea in the pot, fill in with soil around it, and water well. Prune a new-wood hydrangea in spring, and it will grow new buds and then flower. Water thoroughly at the base of the plant, let the water soak in, and water again. Not too long ago, Hydrangea serrata was Hydrangea macrophylla subsp. (60-120 cm). If they start to crimp and turn brown, your hydrangea is getting a sunburn, and you need to give it more protection. Propagation by cuttings is the main way of reproducing these plants. The splashing drops will spread the disease. 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. This low-maintenance flowering plant is a popular perennial that adds a pop of color to any flower bed or garden. The genus includes bushes native to North America, but the Far East is rich in its own representatives as well. Cover the soil surface with 1 to 2 inches of mulch, avoiding the area closest to the stem to avoid fungal issues. Most common species are from Asia, spread across China, Korea, and Japan, while the Smooth Hydrangea and Oakleaf Hydrangea are native to the North American continent. Bloom on new wood: prune in late winter or early spring. Oakleaf Hydrangeas (Hydrangea Quercifolia) Hydrangea quercifolia has leaves shaped like oak leaves. Zones 4-8. Dreamin' is a genuinely unique hydrangea macrophylla. Mulch to conserve moisture and buffer soil temperatures. Bring hydrangeas inside before the first frost of fall. Hardy to USDA zone 3. 4. You want to cut down to just above the fresh. 5), pink or red in neutral to alkaline soils (pH 7. • Dig hole 2X the width of pot. Zones: 3-8 Height: 2 ½-3’ 6. From Cuttings. This variety,. These levels are affected by soil pH, so on acid soils where the pH is 5. Prepare the planting hole: Dig a hole that is twice as wide and just as deep as the root ball of your plant. 8. Trying to change flower color. To turn them pink, add garden lime. Blooming about a month before other hardy hydrangeas, Hydrangea paniculata Little Quick Fire® is a compact, bushy, deciduous shrub boasting a profusion of large, airy panicles, 6 in. When you need a big, bold specimen plant, look no further than hydrangea. seaside serenade® hydrangea. Dig a hole slightly bigger than the pot your hydrangea came in. paniculataThis serves to build up a strong, supportive, woody base while also encouraging abundant new growth for plenty of flowers. Each stem should be trimmed back to the nearest set of healthy buds, making each cut so that it slants away. You'll need 3- to 5-inch pots with drainage holes, sandy potting mix, rooting hormone, and sterile clippers. All Summer Beauty hydrangea is great for small gardens and is the perfect size for patio containers. Some types grow significantly larger than others. Cut a 4 to 6-inch section of green stem off the end of a branch during a period of active growth. CamelliasYes! Hydrangea macrophylla, or bigleaf hydrangea, and to a certain extent H. Water regularly, when the top inch of soil feels dry. • Water deeply to settle, then add more soil if needed. Hydrangea L. Hydretain has the unique ability to attract water molecules, create droplets, and then release those droplets to plant roots. dan hinkley collection. Take cuttings from non-blooming stems in early spring, then root it in a pot until a good network of roots has developed. Flower color is determined indirectly by the soil pH, which affects the availability of aluminum in the soil. Shop our collection of hydrangea shrubs at Spring Hill. Plant in rich soil that is moist but well-draining. 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. Performs best in full sun or. Hydrangeas in general prefer a rich, well-drained soil. Oakleaf hydrangea (Hydrangea quercifolia) Oakleaf hydrangea flowers Photo: Ginny Williams The oakleaf hydrangea is a beautiful native of the southeastern United States and is a favorite of many gardeners. Most shrub-form hydrangeas sold in North America fall into one of five types: bigleaf, mountain, smooth, panicle and oakleaf. Wait until a blossom begins to fade and die. Remove the plant from its pot and. Avoid these by spacing plants to allow for air circulation and avoid getting the leaves wet, especially late in the day. Wetland . The panicle variety of hydrangea likes a lot more sunlight, full sunlight for most of the day so if this is the variety you want to grow, the best position for the plant would be facing regular sunlight. Bobo ® hydrangea is engulfed by large white flowers in summer. Hardy to USDA zone 3. Gardening Trees, Shrubs & Vines Shrubs The Best Types of Hydrangeas to Grow in Your Garden Whether you’re looking for the best hydrangea for full sun or all-season color, check out these perfect. 5 pH, or. The smooth hydrangea ( Hydrangea arborescens) is native to eastern North America. Hydrangea macrophylla and hydrangea paniculata require more water than hydrangea arborescens (smooth hydrangeas) and Hydrangea quercifolia (oakleaf). Dip the cutting in rooting hormone. Held upright on sturdy stems, they are well distributed, making a very attractive plant and display. October 14, 2023. Hydranthea is a genus of cnidarians belonging to the family Lovenellidae. tall and wide. The best for growing indoors is Hydrangea macrophylla -- the mophead hydrangea, which offers hundreds of varieties. Most of the 75 species of hydrangea plants are deciduous bushes that lose their foliage every. How to Care for Hydrangeas. The aluminum sulfate should reduce the pH, but if it does not lower it sufficiently, try adding organic matter, like coffee grounds, fruit peels, or grass clippings. Hydrangea quercifolia (oakleaf hydrangea): Growing to about 8 feet tall with white blooms, this species is hardy in zones 5 to 9. Look for the “broccoli,” Lorraine says. Method 3. Zones 5-9. Last Revised by: Curated and maintained by: USDA NRCS National Plant Data Team. feet. Locate spent blooms and then follow them down to the first set of full-sized leaves beneath the flower head—make your cut right above the leaves. Water once the top few inches of soil are dry. Prune in later winter or early. Developed by the US National Arboretum from a cross of ‘Snow Queen’ and ‘Pee Wee’. Press this down with your fingers so that the plant feels like it's held firmly, and water well. Its flowers are produced on old wood from last. Camellias Hydrangea macrophylla, or bigleaf hydrangea, and to a certain extent H. Endless Summer 'Twist-n-Shout' Hydrangea macrophylla. Backfill the hole, and cover the branch with garden soil. Beyond flowers, these amazing shrubs offer additional ornamental beauty from neat and inte. ’ 8. 5 or lower. Zones: 3-8 Height: 6-8’ 5. In early fall, when everything else begins. " Water your hydrangeas thoroughly but less frequently to encourage deep roots that are more drought tolerant and that will produce hardier stems," she says. Propagating Smooth Hydrangea. One of the more decorative varieties, Mirandas can grow up to 50 feet tall and six feet wide. Hydrangea Care . Buy Online. Like all panicle hydrangeas, 'Sundae Fraise' is tolerant of most soils, regardless of their pH, as long as it's well-drained. A wild hydrangea plant won’t perform well in full sun in a hot location. Bobo ® - dwarf (3’ tall and wide), lacy white flowers turn pink, best color and blooming in cooler climates. The botanical name for those is Schizophragma hydrangeoides and this plant is native to Japan. Bigleaf hydrangea is a woody, deciduous, perennial shrub in the hydrangea family (Hydrangeaceae) and is native to Japan, China, Korea, and Southeast Asia. If you plan to grow in an area of your garden that’s prone to full sun, the most sun tolerant hydrangea is the panicle variety (Hydrangea paniculate). In the north, full sun can be tolerated throughout the entire day. 05 of 12. Protect spring and early summer hydrangeas. Bobo (Hydrangea paniculata 'Ilvobo'), a compact dwarf hydrangea with white. Hydrangea plants are mainly sun tolerant but most do prefer partial shade. Caring for Tree Hydrangea Plants. Take the leaves off the bottom half of the cutting, leaving two to four on the top half. Feed the plant every week while the plant is blooming, using a water soluble fertilizer diluted to half strength. Flower Color:White/ Green. Begonias come in many different colors and love a shady spot, making them the perfect companion for hydrangeas. This hydrangea is also a reliable bloomer, even after severe winters. Hydrangea is a genus of flowering plants that belongs to the family Hydrangeaceae. Blooming from mid to late summer, the glowing blossoms retain their color for a long period before taking on a metallic. - Powerful blooming ability, with dozens of full mophead flowers on strong stems. To plant a hydrangea tree, start by finding a planting location that receives the right amount of sun and ideally has well-drained soil. Prune Hydrangea macrophylla and Hydrangea serrata in mid-spring, others in early spring. 5 m (8 ft) broad with large heads of pink or blue flowers in summer and autumn. With around 75 species and hundreds of cultivars (there are more than 600 cultivars of H. The first symptoms are orange pustules on the bottoms of the hydrangea leaves and yellow spots on top. If you want to create a new hydrangea plant right next to a current one, you can. 5 pH, will favor blue flowers by allowing the hydrangea to absorb more aluminum. You should carry out this practice all through the blooming season to encourage new blossoms and keep your plant looking fresh. Remove last year’s flowerheads using a pair of the best pruning shears. Keep the blooms out of the sun in a well-circulated area. The 'Little Lime' hydrangea (Hydrangea paniculata) is a patented cultivar that is a dwarf variety of the 'Limelight' hydrangea. Here are two of our favorites. macrophylla varieties feature tiny lacelike flowers surrounded by larger blossoms – these are commonly known as lacecap hydrangeas. Make sure the pot has drainage holes and has room for the plant to grow. They fill gardens with their green, leafy foliage and incredible blooms during the warm months. The flowers are white, though some age to a pinkish hue. With snow-white pom-pom inflorescence and exfoliating, textured bark, Hydrangea arborescens in particular is a festive garden staple. Part of the Hydrangeaceae family, the Hydrangea genus is nothing if not diverse. Blooming about a month before other hardy hydrangeas, Hydrangea paniculata Quick Fire® is a bushy, deciduous shrub boasting a profusion of large, airy panicles, 6 in. You can deadhead the flowers in the fall if you wish, but save the significant annual pruning until early spring. Use a brick or stone from your garden to keep the branch in place. With a diverse selection of growing habits and flower structures, hydrangeas are some of the most iconic flora in North America. Fungal leaf spots and powdery mildew are among the most common hydrangea diseases. How to Grow Hydrangeas in Pots. Hydrangea paniculata 'Grandiflora' grows to 25 feet with a 10-foot spread and has pure white flowers. Next, carefully strip off most of the leaves, leaving a pair at the tip of the cutting. Hydrangea anomala is the most common variety of climbing hydrangea. Blooming on both old and new growth,. It will help you keep the plant thriving long term. "Getting your soil pH tested before planting your hydrangeas is essential to make changes where necessary," says Laura Root, category manager of live plants at Jackson & Perkins. This name was given due to the shape of the flower’s seed capsules. Most are shrubs 1–3 m (3 ft 3 in – 9 ft 10 in) tall, but some are small trees, and others lianas reaching up to 30. Also known as peegee hydrangea, panicle hydrangeas produce football or cone-shaped flower clusters in mid-to-late summer. 4. Laurey W. A hydrangea tree looks best with one trunk, a trunk that is bare up to where the canopy begins. Learn more about these show-stopping bloomers, including how to grow and care. '. Its early bloom time will. If the infestation persists, apply horticultural oil. Plant in well-draining soil with plenty of organic matter. Height and spread: 100cm (39"). There are several types of white hydrangeas, each needing specific locations and care to perform best. It grows best in part shade in Zones 3 to 9. This could be a window ledge, or it could be outside on a porch or patio. Second, pick up and throw away any diseased leaves that have fallen. Width: 3-5 Feet. Oakleaf hydrangea (Hydrangea quercifolia) Oakleaf hydrangea flowers Photo: Ginny Williams The oakleaf hydrangea is a beautiful native of the southeastern United States and is a favorite of many gardeners. There are a number of easy techniques for growing a hydrangea from cuttings, including: Take 10cm soft-tip cuttings in October/November. Usually, this hydrangea starts blooming in mid-summer and lasts into the fall. This fast-growing hydrangea suits propagation from cuttings —root or stem. Limit any drastic pruning to early spring, just before new growth emerges. They enjoy more sun than the Mop-head Hydrangeas, so they are a good choice for a sunnier location. Moist soils that do not dry out are best; do not plant in hot, dry, exposed sites. After planting, mulch the surface of the soil to a depth of about 3- 5cm. 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. Vigorous, this deciduous shrub typically grows 3-5 feet tall and wide (90-150 cm). Grow Hydrangea macrophylla in moist but well-drained soil in full sun to partial shade. Add soil around the root system and tamp it down as you go. Hydrangea Type: Bigleaf Growing Conditions: Part shade, especially afternoon shade, in evenly moist, well-drained soil. The name ‘hydrangea’ comes from Greek and it means ‘water vessel’. Click below on a thumbnail map or name for species profiles. This unique panicle hydrangea revolutionized landscaping across North America. 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. Mulch will also help keep weeds away. The best-known varieties are the mophead hydrangeas (Hydrangea macrophylla), which are deciduous shrubs growing to around 1-2 metres in height and bearing large rounded flower heads. 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. The most prevalent causes of. It is a deciduous shrub with green foliage with white flower. The ‘Berry White’ hydrangea, a type of panicle hydrangea (Hydrangea paniculata), is a newer variety of this popular shrub. . Once you have cages and frames, you can re-use them every winter. serrata. Twist-n-Shout® Bigleaf Hydrangea: This is a lacecap variety that grows between 3 and 5 feet tall. Separate out the roots and press the soil. " 'Grandiflora' is easy to grown and reaches a mature size of 10 to 20 feet tall and wide. 01 of 15. The colorful flower petals are actually sepals, modified leaves, while the fertile flowers are much smaller and hidden inside. Hydrangea paniculata (tree hydrangea, panicle hydrangea): Growing 8 to 15 feet tall with white. Tolerates deep shade. Sprinkle them on the seed-raising soil and moisten them with a spray bottle. Once the germinated seeds are big enough to handle, transplant them to their spot outside in the fall.