In theory, BloomStruck hydrangeas don’t need any pruning at all because they bloom on both old and new growth. It’s a matter of taste. The best time to prune them is in the spring, though. 4 Dead, damaged, or diseased stems should always be removed.
Which species of hydrangea blooms on fresh wood?
Panicle hydrangeas, also referred to as PeeGee, are strong plants with exceptional hardiness and drought tolerance. They can survive the sweltering summers in the deep South and the bitter winters in the north. Despite their enormous blooms, these hydrangeas are among the easiest to grow. Show-stoppers like Moon DanceTM and White Wedding Hydrangea compete favorably with bigleaf types.
Ideal Conditions for Panicle Hydrangeas
Panicle hydrangeas can withstand a variety of soil types and are hardy to zone 4. In full sun to partial shade, plants thrive, and sun promotes the best flowering. To help plants take root, water them well in the first season. Perfect for containers as well as massing and hedging.
Pruning Panicle Hydrangeas
Panicle hydrangeas can be cut in the winter or early spring before new growth appears because they bloom on new wood. Although pruning is not required, it can encourage more flowering. Panicle hydrangeas can withstand severe trimming to keep their size and are occasionally made into trees.
Do hydrangeas from Endless Summer bloom on aged wood?
For those of us who live in northern climes with more severe winters, The Endless Summer series represents a milestone in hydrangea breeding.
Older hydrangea kinds only produced flowers on old wood or stems that had grown the previous year. All flowers for the following season were gone once that growth was destroyed due to harsh winter circumstances, damage, or unintentional autumn trimming.
The plants in the Endless Summer series are significantly more adaptable in the environment because they bloom on both new and old wood. The plants won’t generate many, if any, buds on the growth of the current season, though, if the plants are not properly nourished in the spring.
Any Endless Summer variety will grow best in an easterly direction or in a spot in the garden that receives morning sun and afternoon shade. To make a richer soil that will store nutrients and fertilizers better and retain more moisture, use a decent compost.
Use Plant-tone and granular lime for purple to pink blossoms or Holly-tone and holly for blue flowers when fertilizing your Endless Summer Hydrangeas in the spring.
We advise fertilizing in April, May, and June with 1 cup of fertilizer for every foot of branch spread for the optimum flowering. For instance, 9 cups of fertilizer would be applied over a three-month period to a plant that is 3 feet broad. After this time, fertilizer shouldn’t be used to plants.
Continual Summer Fall is not the time to prune hydrangeas. Rather, only prune them in May. This will guarantee that the flower buds that survived the winter have opened.
Plants marked with a number sign (#) and a number are generally the same size as gallon pots; for example, #2 is equivalent to a 2 gallon pot, #3 to a 3 gallon pot, and so on. These plants are offered for sale in pots.
Plants with a height (such as 5-6′) give an estimate of the plant’s present height.
Plants that are measured in inches (such as 2.5″) are identified by their caliper, or trunk width.
Plants are typically larger when measured by caliper (inches) than when assessed by height (feet).
On decaying wood, do hydrangeas grow?
Gardeners in temperate regions can cultivate rich blue, pink, or white hydrangeas (Hydrangea spp.) that bloom consistently and are not particularly susceptible to cold, illness, or pests. Hydrangeas die back each winter in regions where it regularly drops below freezing for extended periods, creating a pile of dead stems that must be removed in the spring. The occasional harsh freeze, though, can still damage hydrangeas’ delicate new growth and even long-lived stems in regions with mild winters. Pruning out dead wood and stems may not even postpone a hydrangea’s summer bloom, depending on the plant’s bloom cycle (some hydrangeas bloom on new wood, some on old).
Many customers ask why their hydrangeas aren’t blooming. The primary reasons hydrangeas don’t bloom are incorrect pruning, bud damage due to winter and/or early spring weather, location and too much fertilizer.
There are hydrangea kinds that bloom on either fresh or old wood, or even both. Both new and old wood are the growth of the following year (spring), respectively.
- Consider that this year, you bought a Nikko Blue Hydrangea. For the next year, Nikko’s produce blooms in the fall. Your Nikko is therefore creating blooms this fall that will blossom in the spring.
- Therefore, you wouldn’t want to completely prune your Nikko Blue Hydrangea this fall while you are pruning your perennials. Pruning the Nikko Blue Hydrangea this fall would effectively mean cutting off your hydrangea flowers for the upcoming spring.
- The idea behind Endless Summer, a hydrangea variety that blooms on both old and new wood, is that the plant will set blooms this fall to blossom not only in the spring of the following year, but will also keep producing blooms in the spring of the following year to extend the blossoms into the summer.
- Once more, pruning your Endless Summer hydrangea in the fall would mean removing some of the flowers that would blossom in the spring.
The hydrangea’s plant tag will indicate whether it blooms on fresh wood, old wood, or both. It is typically preferable to wait until spring to prune your hydrangeas. As the plant grows, you’ll see stems that are fragile when bent and lack any leaves. Since these stems are dead and won’t produce any flowers, they should be clipped close to the plant’s base.
The second reason why your hydrangeas aren’t blooming is probably the weather. Buds of hydrangeas are extremely susceptible to cold. Therefore, it is a good idea to wrap your hydrangea for the winter if it is an old wood hydrangea. Keep in mind that old wood hydrangeas establish their blooms for the following spring in the fall. Therefore, you won’t have blossoms in the spring if the fall-produced buds are frozen in the winter.
You can wrap anything with regular burlap. Burlap should be wrapped around the plant and filled with mulch or leaves after the first hard frost and after the hydrangea’s leaves have dropped. In order for the buds to survive the winter and sprout the following spring, the plant receives insulation from this. Never wrap your hydrangeas in plastic. When warmer winter days arrive, the plant cannot breathe since plastic, unlike burlap, doesn’t breathe. As a result, the plant can heated to such high temperatures that it cooks within the plastic and perishes.
The second most frequent weather-related cause hydrangeas do not blossom is late spring killing frosts. We saw really chilly temperatures in April both this year and last year after beautiful spring days. When springtime temperatures drop below freezing, hydrangeas need to be covered with an old beach towel or sheet. Because of the temperature dip, there won’t be any blossoms.
The majority of hydrangeas require at least 3 to 4 hours of light per day to bloom. The best light is in the early morning, midday light is acceptable if it is dabbled light rather than beating sun, and afternoon sun is typically too hot. Check the plant label, though. Newer hydrangea cultivars are being created that can withstand more sun exposure time and sun intensity. A hydrangea in full sun will require much more watering than one in diffused light, so keep that in mind.
High nitrogen fertilizer should not be used to feed hydrangeas. Nitrogen is indicated by the first number on the fertilizer ratio. (The ratio stands for N, P, and K) For healthy leaves and general good growth, some nitrogen (N) is required; however, a ratio of 8-16-6 or any similar combination with a higher middle or phosphorus (P) value is preferred. The growth of roots and shoots is encouraged by phosphorus, which improves the blooming process.
Potash (K), the third element’s last quantity and the lowest ratio, is for plant hardiness. Because hydrangeas prefer acidic soil, they can be fertilized with fertilizers designed for such plants. Hydrangeas only require fertilizing twice a year, once in early spring and once in mid-summer. To avoid root burn, make sure the soil is always moist before applying a fertilizer.
Can mountain hydrangeas grow on both new and ancient wood?
Hydrangeas come in two varieties: those that bloom on aged wood and those that bloom on young wood. The majority of bigleaf, mountain, oakleaf, and climbing hydrangeas blossom on ancient wood. For the following season, they begin to create buds in the late summer and early fall, and they keep those buds through the winter. Therefore, pruning these plants once the buds form and at any time up to the next summer will result in few, if any, flowers. The same trimming guidance is applicable to hydrangeas that are reblooming because they retain buds from the prior year. I often prune oldwood hydrangeas to manage height at the end of July or the beginning of August. This allows the plant enough time before winter to develop buds, grow, and harden off. I advise letting the plant tell you what is alive or dead if you wish to cut off dead wood in the spring. When the spring leaves appear, cut the stems above the new growth, getting rid of any that have no signs of vitality.
Hydrangeas that bloom on new wood
The most reliable and cold-resistant flower producers in the Hydrangea genus are those hydrangeas that flower on fresh wood, such as panicle and smooth varieties. These hydrangeas bloom and set buds at the same time, protecting their buds from the dangers of winter. Pruning in the late fall or early spring won’t hinder bloom growth. Identifying whether your hydrangea blooms on old wood or fresh wood simply by looking at it can be very challenging. Maintaining plant tags and being aware of the species you’re working with is preferable.
The founding partner and co-owner of West Kingston, Rhode Island-based wholesale nursery Morningstar Nurseries is Bob Aube.
Local garden centers sell many of the kinds mentioned in this article or can special order them for customers. The following mail-order nurseries may have them if you don’t have access to any nearby options:
What distinguishes BloomStruck from the original Endless Summer?
BloomStruck differs from the original in that it grows more erect, produces more flowers per stem, and blooms with richer, more saturated hues. “One of the very fascinating things about it is that, as the flowers age, they go through this plethora of colors,” says Natalia.
Is the wood in Endless Summer old or new?
You will get the most flowers by safeguarding the flower buds on the old wood since Endless Summer Hydrangeas bloom on both the previous season’s growth (“old wood”) and the current season’s growth (“new wood”).
Why didn’t my hydrangea that blooms all summer long?
Your hydrangea shrubs may not be blooming for a few main reasons, including sun exposure, excessive watering, and excessive fertilization. Endless Summer hydrangeas appreciate dappled shade in the afternoon and morning sun. It may be too hot and intense for the blossoms to form if they are placed in full sun.
How should hydrangeas that bloom on fresh wood be pruned?
prune in the late winter or early spring to allow new wood to bloom. Panicle hydrangeas might not require pruning every season. Pruning will tune them up if they appear overgrown or floppy, especially after a heavy rain. Before they leaf out, remove up to 30 to 50 percent of the old growth to give them a somewhat rounded form.
What occurs if my hydrangea isn’t pruned?
If and when you prune is the key to happy, healthy hydrangea flowers. Of course, fertilizing and offering the ideal environment have a lot to recommend them. However, if you don’t prune properly, your efforts will be in vain. Deadheading is not the same as trimming. Pruning refers to more drastic cutting to preserve shape or remove dead growth. However, feel free to discard spent blossoms or cut fresh ones to use in arrangements.
Hydrangeas can bloom on either fresh wood or old wood, depending on the species. The wood from which they blossom determines whether and when to prune.
Old wood-blooming hydrangeas do not require pruning and benefit from it. They’ll blossom more abundantly the next season if you leave them alone. But feel free to deadhead or gently thin. Just keep in mind that while new growth may appear, it won’t bloom until the following season. In our region, four different species blossom on aged wood. Additionally, they are not limited to the hues displayed here.
Climb using suckers. On your wall or trellis, resist the desire to remove the dormant growth.
The flower heads are more conical in appearance, and the leaves are large and resemble oak leaves. It’s a pleasant surprise for a hydrangea when its leaves turn reddish-orange in the fall.
They are very comparable to lacecap types, but smaller and with more compact leaves.
Pruning should be done in late winter or early spring on hydrangeas that bloom on new wood. Trim back to two feet to prune to shape. The next season’s blossoms are produced by strong, fresh growth that is encouraged by trimming. In our region, there are two types that bloom on fresh wood. They are also not restricted to the colors displayed.
Oakleaf variants are not included in cone-shaped blooms. Keep the blooms on throughout the winter to provide interest; even dried out, they are quite lovely.
regarded as a wild kind. They often have smaller blooms and leaves than Bigleaf variants and are completely white. They enjoy full sun and can grow very tall.
Knowing whether or when to prune now will help you avoid the disappointment of a hydrangea that doesn’t blossom. Don’t forget that a robust shrub will produce more gorgeous blossoms if it has well-draining soil and good organic fertilizer. Come on in, and we’ll show you where to go to develop your green thumb.