As one of the most well-liked woody blooming shrubs in Minnesota landscapes, hydrangeas receive many questions about how and when to prune.
Each year, lovely hydrangea bushes will reward you with gorgeous blossoms that will instantly transport you back to your happy youth. Who could forget the white hydrangeas with their snowball-sized blossoms. We would have been astounded by the size as kids. Growing hydrangeas is enjoyable since we are still amazed and amused by them as grownups. It is even simpler to take care of hydrangeas because they are fairly resilient and resistant to the majority of pests and illnesses. You are sure to find one that is perfect for you because there are so many different types.
Planting is best done in the spring and fall. Plant in the springtime when the risk of frost has passed. Place your hydrangea in a location where you won’t need to prune it. These shrubs have a robust growth rate, and they are naturally large and attractive. Your hydrangea shouldn’t be planted any deeper than it was when it was in the pot. Planting beneath trees should be avoided since the roots will fight for moisture and nutrients. For the first few years, give your hydrangea enough water to help the roots grow strong, but don’t let the water pool around the plants. Use a balanced, slow-release fertiliser once a year, or apply 10-10-10 twice a year. Compost or commercial manure are both organic substitutes. By August, stop fertilising to allow your hydrangea to prepare for dormancy.
Though there are many different varieties of hydrangeas, the majority may be grown in some shade. They do need four hours of sunlight each day. However, a lot of hydrangeas dislike really hot weather, so try to place them where they can take advantage of some afternoon shade. Although hydrangeas can be planted in a variety of soil types, they normally need rich, wet soil that drains well. Before planting, amend the soil with compost to help loosen it. After planting hydrangeas, mulch can also be added.
When taking care of hydrangeas, water is crucial. At least once a week, especially in dry conditions, they enjoy deep watering. However, hydrangeas should only be transplanted in the fall or early spring when they are dormant. Make sure to remove the entire rootball before planting it again right away.
Hydrangeas come in a variety of varieties, and each may require somewhat different trimming and care. Before making a purchase, carefully review the plant tag for details, zone hardiness, when to trim, and whether it needs sun or shade so you can plant in the appropriate location.
Types of hydrangeas, sometimes known as hydrangeas:
Round, globular flower heads can be found on mopheads. The majority enjoy early sun and afternoon shade, but they avoid strong shade because it can result in subpar flowering. Along with white, lavender, and lilac, they also come in blue and pink. The flower heads of H. macrophylla normalis, which is also known as lace cap hydrangea and has the same fundamental growing needs as mopheads, are made up of considerably bigger sterile male flowers in the outer ring and tiny disk-shaped fertile flowers in the centre. Flower heads on lacecaps are loosely placed and flattened. This gives the garden a very different appearance. Because they generated flower buds on last year’s stems or the old stems, these hydrangeas were frequently challenging to coax to re-bloom in cold climes. The new stems formed during the season were unable to bear blooms if they suffered severe winter damage and died to the ground. Since then, new macrophylla varieties that bloom on both old and young stems have been introduced, changing this. Gardeners now have a chance to blossom even if stems are completely destroyed. Verify the growing zone on the label (some zone 4, but most are zone 5).
Smaller shrubs called H. serratas are a subspecies of macrophyllas. Shade them partially. H. arborescens, often known as smooth or wild hydrangea, makes a lovely addition to any garden. The most popular cultivar is “Annabelle,” which consistently produces large, white blooms. The Hydrangea paniculata species are among the most tolerant of urban environments and adaptable hydrangeas. These plants favour either full sun or partial shade, well-prepared, wet soil.
The University of Minnesota has identified the following cultivars as hardy in Minnesota. Although the University does not advocate any particular types, it does provide the following for you to take into account for your garden:
One of the most well-known names for hydrangeas is Annabelle. Annabelles, often referred to as Snowball hydrangeas or smooth hydrangeas, feature enormous, symmetrical blooms in the months of June and July. It can get up to 4-5 feet tall and 3-5 feet broad and is hardy to Zone 3. With creamy white flowers that are frequently more than 8 inches across, it is likely the most showy hydrangea in the garden. Rich, well-drained soil that is regularly moist is what Annabelle prefers. It thrives in some shade and tolerates a wide range of soil pH levels. If it is planted in full sun, make sure to water it enough to prevent the leaves from drooping. Each spring, just as the new buds start to appear on the lower stems, Annabelle needs to be cut back to within a foot or two of the ground since it blooms on new wood.
The first pink-flowering ‘Annabelle’ hydrangea is called ‘Invincibelle Spirit. From summer through fall, this plant produces a tonne of bright pink blossoms, and the colour is unaffected by the pH of the soil. It can reach heights of four to five feet.
Incrediball is an enhanced version of the tried-and-true “Annabelle.” The blossoms are enormous, measuring up to 12 inches in diameter, as their name suggests. The stems are also much more sturdy than those of “Annabelle,” allowing them to support the heavy flower heads and prevent them from drooping. Incrediball may reach heights of four to five feet.
The name “panicle hydrangea” also refers to Hydrangea paniculata ‘Grandiflora’. PeeGee is a robust cultivar that can withstand Zone 3. In August and September, it blooms in a spectacular conical shape. They start out milky white and fade to a lovely bronze-pink that lasts well into the fall after a few weeks. The shrub will expand to a height and width of 8 to 10 feet in our environment. The ideal soil for PeeGee hydrangeas is loamy, evenly moist, and well-drained. They can thrive in both full sun and partial shade and are pH-adaptable. Any pruning should be done in the spring since they blossom on new wood. Because PeeGee hydrangeas are so resilient, dieback is rarely an issue.
Limelight hydrangea paniculata Limelight is hardy to Zone 4 and is related to PeeGee hydrangea. It varies from PeeGee by flowering later and having flowers that are a vivid lime green. With a height and width of 6 feet and 8 feet, it develops into a rounded shrub. Make sure to give it a lot of room to expand. Limelight thrives in both full sun and partial shade. It will offer bloom in the late summer and early fall. Limelight blooms develop on young wood, and early spring pruning is advised. It tolerates a wide variety of pH levels and does best on loamy, well-drained soil.
In what climate zone may hydrangeas grow?
The hydrangea, which blooms in the spring and summer, is classified as a shrub. Despite the fact that they can grow to be pretty enormous showpieces in your yard, even a beginner gardener won’t need to know how to grow hydrangeas because these stunning plants practically grow themselves. The hydrangea, which can grow up to 15 feet tall, fills in a space swiftly and frequently in just one summer. Hydrangeas are perennial plants that grow in hardiness Zones 3 to 7. Hydrangea blooms can be the main plant in your landscape because they bloom in the spring and frequently continue into the early fall.
Where to plant hydrangeas:
- A location with morning sun and afternoon shade is ideal. They’ll take more sun if you reside further north (possibly full sun all day).
- Think about the mature size and give it lots of room to expand.
- Pick a location with great drainage. If necessary, add compost to the soil.
- Plants won’t thrive if they are planted too close to a tree because of root competition and a lack of sunshine.
- Planting should not be done in open locations where strong winds could snap stems.
How to plant hydrangeas:
- By amending your soil with up to 15% organic matter and an all-purpose slow-release fertiliser, you may give your plant a good start (use half of what is recommended).
- Plant a little higher than you did while you were in the nursery container.
- In order to give the roots plenty of freedom to expand, the planting hole should be two to three times broader than the root ball.
- Before planting, gently untie the roots from their pots.
- Add the modified dirt back in and thoroughly water it.
- Planting in groups requires a minimum distance of 3 feet (more, if planting larger varieties).
Planting hydrangeas in pots:
- Put potting soil in a bag rather than garden dirt.
- Slow-release fertiliser should be added.
- For watering, leave 1 to 2 inches between the soil’s top and the pot’s rim.
- Make sure the pot includes space for the plant to grow and drainage holes.
Can you find hydrangeas in the Midwest?
Due of their cold resistance, panicle (H. paniculata) hydrangeas are especially suggested for the Midwest. Most panicle hydrangeas are hardy to Zone 3, and they bloom best in direct sunlight.
Which side of the house should hydrangeas be planted on?
Bushes called hydrangeas bear white, pink, or blue blooms. These are small flowers that grow in voluminous bloom clusters. These bushes will typically reach a height of four to six feet and bear flowers that can range in length from six to eighteen inches. These shrubs thrive best in damp soil and are extremely cold hardy. These shrubs prefer some shade and cannot stand full sun or complete darkness. H. anomala, a climbing variation of hydrangeas, is also available. This type can either be let to grow along the side of a structure or planted on a trellis on the north side of the house. It has the capacity to grow as tall as 80 feet. Hydrangeas do well when planted close to small evergreens or woody shrubs because they also do well in woodland regions.
- No matter where in the nation you reside, the north side of your house receives little natural light.
- Hydrangeas do well when planted close to small evergreens or woody shrubs because they also do well in woodland regions.
Are hydrangeas winter-hardy?
Here is professional guidance on how to put hydrangeas to bed for the winter season from guest bloggers Megan Nichols and Jessie Jacobson of Tonkadale Greenhouse in Minnetonka, Minnesota. (They may have more hydrangea trees and shrubs in their zip code than almost anywhere else in the United States, so they are aware!)
The temperature has dropped, and autumnal symbols can be seen everywhere. The garden needs to be put to bed soon. Hydrangeas reward us with large, stunning, and prodigious blooms all season long. You may say that they are givers. It’s time to return the favour now. It’s time to tuck the hydrangeas in with kisses and wishes for sweaty dreams.
Here in Minnesota, our moods can fluctuate as drastically as the unpredictably harsh winter weather extremes, snowfall, and freeze/thaw cycles. Despite the fact that many hydrangeas are regarded as hardy, all of this can confuse them. To survive the winter and come back bigger and better the next year, they require some care. Although hydrangeas cultivated in warmer areas don’t need as much post-season primping as those grown in our zone, there isn’t a single thing that wouldn’t appreciate a little tender loving care right now.
Utilize these suggestions to get the most out of your hydrangeas so that you can be the one to present at this time next season!
(Is pruning in order? No and yes. Here is our recommendation for which hydrangeas should be pruned right away and which should wait until spring.)
Don’t Stop Watering
Make a commitment! I shall water my hydrangeas till the earth freezes solid, you declare while raising your right hand. really good Hydrangeas are thirsty plants by nature, so it’s essential to give them regular, deep watering. We don’t need to get all linguistically nerdy right now, but their name literally means “hydration.” Winter’s cool, dry winds completely drain the moisture from the vegetation, and hydrangeas don’t use lip balm. It need not be heated in order to be dry!
If a freeze is not a concern where you live, water deeply but sparingly during the winter depending on how much rain you get.
This is how: Making a small hole in the side of a 5-gallon bucket, filling it with water, and placing it at the base of the plant while it slowly drips out of the bucket is one method. Another option is to lay your hose at the base of the plant for about an hour with the water turned on to a gentle drip.
Give Them One Last Hearty Meal
Composting your hydrangea beds in the fall will give them a boost for the upcoming growing season. Everyone feels better after a full night’s sleep and a filling breakfast. This also applies to hydrangeas. After a lengthy winter’s hibernation, they will be ravenous for some nice compost. Compost can decompose during the winter if it is used now, making nutrients easily accessible in spring. A few inches of compost is advisable even in regions without a deep cold. Only compost is being discussed here! Don’t give your hydrangeas fertilisers that are high in nitrogen because this can encourage them to produce new foliage growth.
This is how: Before laying down mulch in colder climates, top dress the area with compost, well-aged manure, or other organic material after the ground has frozen. This organic fertiliser, which is rich in nutrients, will decompose over the winter, making nutrients available to the plant in the spring. Apply compost in the late fall or early winter in zones that are warmer.
Mulch Matters
Mulching helps keep moisture in and weeds out in warmer climates while shielding the crown and roots of your hydrangeas from harsh winter temperatures in colder climates. Snow serves as a natural insulator if everything goes as it should. Plants suffer during strange winters with little snowfall and extreme temperature changes. Apply a thick layer of mulch around the plant’s base to offer hydrangeas the best chance of flourishing. While decorative mulch is useful, straw, marsh hay, or dead leaves are suggested instead.
This is how: Apply a 6–8 layer of mulch once the ground has frozen (or late fall or early winter in zones with milder winters). This shields plants from the heave-ho of springtime freeze/thaw cycles, which can yank them out of the ground. Inviting mice to make this their snug winter home, causing rotting and illness, or tricking the plant into believing it’s time to bud, are all consequences of mulching too early. Be patient; you don’t have to do things early simply because your neighbours are.
Keep Them Cozy
The amount of winter cold determines whether or not hydrangeas require protection. Winter protection is not required in zone 7 if the air temperature stays above zero degrees. Wrap or totally cover barely hardy hydrangeas in chilly areas. This is crucial for plants that bloom on old wood, such hydrangeas with mop heads and large leaves (Hydrangea macrophylla). The most recent types of mop head/big leaf hydrangeas, however, bloom on both fresh and old wood, so it’s important to keep that in mind. In their favour and ours! Hardier hydrangea varieties like the paniculata and arborescens don’t often require additional winter care, although really low temperatures might cause its limbs to die back. Consider covering if a colder than usual winter is forecast.
This is how: Wrap plants loosely in a few layers of burlap, making sure to tie it off with strong twine. Making a mulch mountain and covering the majority of the plant is an additional choice. Smaller, newly planted specimens respond well to this technique.
There’s Still Time To Plant!
The first three varieties of hydrangeas can be grown here in Zone 4; oak leaf hydrangeas can also be grown in warmer climates (zones 5 to 9). The optimal time to plant shrubs is in the fall. Just make sure to do all of the aforementioned things, including watering and mulching.
Here are some of our favourites that you can plant now for stunning blooms the following spring.
Panicle Hydrangeas
These late blooming hydrangeas, sometimes known as PeeGee hydrangeas (summer into early fall). They are covered in elongated, conical flower heads that emerge white or green and blush into pinks and peaches as the season goes on.