The numerous rhododendron and hydrangea species provide a wide range of sizes and hues. Both species are frequently utilized in upright shrub borders and bulk plantings. From the Catawba, which may reach heights of 6 to 20 feet and widths of 5 to 8 feet, to the plumleaf, which can reach heights of 8 to 12 feet and widths of 6 to 8 feet. Rhododendrons can be seen with flowers that range in color from bright orange red, deep crimson, purple, yellow, cream, or gold-orange among their enormous green leaves, depending on the cultivar and season. The panicle, which may grow up to 20 feet tall, is the largest kind of hydrangea, measuring 2 to 6 feet tall and 4 to 6 feet broad. Blue or pink blooms are arranged in ball-shaped clusters on hydrangea flowers. They begin as a light green color that becomes to white, then fades to rose or purple pink by summertime before turning tan. Although other kinds of hydrangea have rounder leaves, oakleaf hydrangea is named for its green, serrated leaves that resemble oaks.
Azaleas
Partial of the greatest plants to grow next to hydrangeas include azaleas and rhododendrons because they share similar preferences for some shade and high-quality organic mulch.
These plants also prefer somewhat acidic soil, just like blue hydrangeas do. Avoid the pink ones or let them turn blue because they prefer more alkaline soil and won’t thrive with acid-loving azaleas.
Azaleas are wonderful companions for any acid-loving plants because they are not troubled by insects or illnesses. Try the white or yellow-flowering varieties to contrast with blue hydrangeas for a magnificent spectacle. White hydrangeas look good with any shade of pink or salmon.
The majority of azaleas bloom throughout the spring and into the summer, but other kinds bloom at other times of the year to keep the garden interesting.
Heuchera
This perennial plant is renowned for its eye-catching leaf, which comes in hues of rose, gold, lime green, purple, and red.
These North American natives, sometimes known as Coral Bells, thrive in shady woodland settings and are wonderful companion plants for hydrangeas.
In the spring and summer, they produce tiny bell-shaped flowers that are rich in nectar and draw a large number of pollinators, such as butterflies and birds.
When hydrangeas are in bloom, plant as a border in front of them and pick combinations that are aesthetically pleasing. White hydrangeas and lime green Coral Bells are one of the traditional combinations, but this adaptable plant has a wide range of uses.
Sweet Potato Vine
They produce masses of incredible colorful leaves that range in hue from gold, bronze, brown, and almost black to bright green, even though they prefer full sun. As a groundcover or border plant in front of hydrangeas, the compact size is ideal.
While there are hydrangea types for USDA zones 5 through 11, sweet potato vine grows best in zones 8 through 11, so that should be considered before planting.
Hostas
Another plant that complements hydrangeas admirably is the hosta, which prefers similar environmental factors.
Although some types may even grow in deep shadow, they thrive in partial shade. They also prefer nutrient-rich, somewhat acidic soil. Summertime brings forth the most in these plants, which brilliantly accentuate the hydrangea blossoms.
There are numerous sizes (ranging from one to three feet tall) and colors available, including green, lime green, blue green, and white variegated variations. Plant with hydrangeas as a border for a bounty of large leaves.
Are rhododendrons and azaleas the same thing?
Rhododendrons and azaleas are well-liked garden shrubs for gardens of all sizes because they produce a stunning display of vivid flowers throughout spring and summer. But how do the two differ from one another?
Azaleas and rhododendrons are both members of the rhododendron family. Azaleas are a sub-group of the genus Rhododendron, which is a genus (group) of plants with shared traits, rather than a separate genus. While there isn’t a clear cut way to tell azaleas from rhododendrons apart, each has unique qualities and traits that are crucial to know when selecting the perfect plant for your garden.
- Deciduous versus Evergreen. Evergreen rhododendrons retain their leaves all year long (technically there are 2 exceptions but we would not recommend these varieties so we ignore them here). Except for Japanese azaleas, which are evergreen, azaleas are deciduous and shed their leaves every fall. Japanese Azaleas are well-liked throughout the Christmas season due to their low growth rate and eye-catching blossom colors.
- Growth Pattern. Rhododendrons often grow to be larger plants with fewer robust stems, whereas azaleas are small to medium sized shrubs with numerous smaller stems. Rhododendrons are more grandiose in every way than azaleas, with larger flowers and leaves. The exception is dwarf alpine rhododendrons, which are significantly smaller and reach heights of 20 to 80 cm after 10 years, making them an excellent choice for clustering in a rock garden.
- Foliage. Large, oblong, leathery leaves with tiny dots or scaly surfaces are characteristic of rhododendrons. Azaleas feature smaller, narrower foliage that, in the fall, turns vivid shades of yellow, orange, and scarlet before falling to the ground. Azalea foliage is frequently hairy along the midrib and underside of the leaf (except for Japanese azaleas). In reality, Japanese evergreen azaleas have two sets of foliage per season—the first appearing in the spring and the second in the summer. A casual viewer might not realize that the first set was lost since it happens gradually. Around the time the blooms begin to fade in the spring, deciduous azaleas begin to sprout new, mid-green leaves.
- Flowers.
- Azalea blossoms are smaller and either tubular or funnel-shaped, whereas rhododendron blooms are huge, bell-shaped flowers in clusters. Both plants primarily bloom in the spring, but there is now a growing selection of summer flowering species available, including “encore azaleas,” which bloom in the early spring and then again in the summer. One of the significant differences in the initial taxonomy classifications was that azaleas have 5 stamens whereas rhododendrons have 10, provided you pay close attention to detail. Rhododendrons that have been crossed to create more eye-catching blossoms are known as hybrid rhododendrons. They feature huge leaves and large, trussed blooms, some of which are fragrant, just like classic rhododendrons, making them perfect for use as foundation or blooming hedge plants.
- Conditions for Growing. Rhododendrons are fairly picky, often needing acidic, moist yet free-draining soil that is rich in humus and partial or dappled shade (except from alpine species, which prefer full sun). Additionally, they do not react well to cold, dry breezes or exposed, hot places. Because they are shallow-rooted, like rhododendrons, azaleas are typically more tolerant of aspect, soil quality, and exposure. However, a moist, acidic soil is still a “must have.” Again, the exception is the Japanese azalea, which is more susceptible to harsh winters than both deciduous azaleas and rhododendrons.
Where should hydrangeas not be planted?
growing circumstances The best place to grow hydrangeas is where they will receive morning light and afternoon shade because they require well-draining soil. Both full sun and deep, consistent shadow are unsuitable for hydrangeas. Choose a location where your hydrangeas will receive at least three to four hours of direct sunlight each day.
Are hydrangeas sun-sensitive?
With the ideal balance of morning sun and afternoon shade, hydrangeas flourish. Even the sun-loving Hydrangea paniculata will thrive in some shade. Some hydrangea cultivars may survive complete shadow, though.
The oakleaf hydrangea, also known as hydrangea quercifolia, is a substantial species of hydrangea that may reach heights of up to eight feet. In a shade garden, this big bush makes a beautiful backdrop. The height will provide excellent midsummer seclusion. Oakleaf hydrangeas are summer bloomers with mostly white blooms, elegant oakleaf-shaped leaves, and lovely peeling bark.
Hydrangea anomala ssp. petiolaris is another choice for full shade. This climbing species, which has lacy, white blossoms in the summer, can reach a height of 50 feet if it is given adequate support. The foliage is a rich shade of green and would look wonderful growing up a tree trunk or covering the face of a building. It would also look lovely covering the roof of a garden shed.
Full shade cultivars require the same upkeep as partial shade. In the deeper shade, it will be especially crucial to keep the plants free of leaf litter and with excellent airflow. Water your plant once a week after it has become established. Keep a watch on the leaves, and if you notice any drooping, especially during the hot summer months, water them right away. The importance of this increases in hotter regions.
These leaves’ unique shape would be a lovely complement to Hosta leaves. The white blossoms would contrast nicely with the lighter hues of your shady blooms and provide some brilliant brightness to your shaded locations.
Shade Varieties
There are a few different hydrangea cultivars that thrive in the shade. Some types can even thrive in zones 3 (which doesn’t warm up until later in the spring), which is one of the coldest growing regions. Let’s examine some of the best shade selections!
Hydrangea quercifolia ‘Snow queen’
The movie “Snow queen” is stunning. The flowers are stunning, as they are with all hydrangeas. These rose blush-colored blossoms appear in the middle of summer. The foliage of this plant is my favorite component. The leaves begin the season in a very deep green, gradually changing to a deep reddish bronze color, and finally finishing in that shade, offering a stunning splash of color to your fall landscape.
Hydrangea quercifolia ‘Alice’
With a height ranging between 12 and 15 feet, this Oakleaf Hydrangea is one among the biggest. In the summer, this plant blooms with incredibly deep cream-colored flowers. A woodland garden would be a truly lovely place for “Alice.” This cultivar would look especially beautiful if it were grown as a bordering hedge.
Hydrangea arborescens ‘Annabelle’
‘Annabelle’ enjoys partial shade and has some of the largest flowers in the hydrangea family (12 inches wide!). These enormous blossoms can be supported all season long by the sturdy stalks. This shrub can grow up to five feet tall and five feet broad, so give it plenty of area to expand. These enormous, all-white blossoms bloom for a long time.
In a mass planting, as a specimen shrub, or as a foundation planting, “Annabelle” would look lovely. These bushes should still be included in your cutting garden. Imagine a bunch of flowers that large! Wow!
Do rhododendrons have two blooms?
Your azalea or rhododendron, which typically bloom in the spring, are in bloom in the middle of October. One or two flowers may have opened, or the entire bush may be in bloom. How can the plant be perplexed? You’re curious, “Will it still bloom in the spring?”
These plants frequently bloom at this time of year for three reasons.
1. Daylight and nighttime hours are comparable to those in the spring, when these plants typically blossom.
2. After a dry summer, the two heavy downpours we’ve recently experienced are comparable to the springtime dampness we regularly get.
3. Just like in April, the days are warm but the evenings are chilly.
The light, moisture, and temps are all indicating that spring has arrived. and in reaction, the plant is starting to bloom.
At this time of year, several rhodys open some flowers, but the PJM is the most well-known for doing so.
Does it bloom in the spring? Only if part of the buds are still closed. The buds that have already bloomed in the fall will not do so in the spring.
This photo’s bottom center bud, which should bloom next spring, isn’t now opening. The one on the left, though, is so widely opened that it won’t bloom again until April.
Other things you might be noticing in your yard and garden:
Older needles are being shed by white pines. These needles are on the inside, and they are fading and falling. This is typical at this time of year because the plant is getting rid of the old to avoid having to store it for the winter.
This fall, some trees are shedding their leaves before they turn color. The reason for this is the drought.
There are mushrooms growing everywhere. A sign that mushroom and other fungal spores will flourish is the recent rain and the cool fall temperatures. In most instances, this is normal and of little concern. You can let them grow and fade as they please, but if you’re concerned that your children or dogs might eat them, pull them up and toss them in the trash by placing them in a paper bag or the brush pile. Many of these fungus are quite lovely and enchanting, so whenever possible, take a moment to unwind and appreciate their brief appearance.
Perennials and annuals are going out of business. For the season, our floral plants are ceasing to bloom. You can pull up any annual that is drying out or becoming yellow. Cut perennials down to one inch above the ground if they’re no longer beautiful. Hosta should not be cut down because it will shrink to nothing at the first sign of freezing; instead, wait for Mother Nature to do the clearing for you.
Don’t forget to decorate your home with mums, pumpkins, and other fall flowers to celebrate the season!