We’ve known for a long time that many of our clients have had success producing peony in USDA zones 8 and 9. We recently reached out to several highly knowledgeable farmers in these regions of the country for some specific guidance on how to get peony to thrive there, but due to the extreme and unprecedented conditions encountered in some places of these zones in the last five years, we recently contacted them.
We would be delighted to hear from you if you have any other growing advise for peony in zones 8 or 9!
In Zone 9, are peony hardy?
Long-lived, woody bushes called tree peony (Paeonia suffruticosa) can reach heights of 6 feet and a width of 4 feet. They flower earlier than any other variety of peony and have gigantic, up to 10-inch-wide blooms.
Tree peony need a period of winter dormancy, although the temperature should not go below freezing. Because of this, zones 4- to 9 are ideal for growing most tree peony cultivars. If you decide to include a tree peony in your garden or landscape, be careful where you place it. Tree peonies actually prefer growing in dappled shade, whilst all other varieties of peonies flower best in full sunlight.
Plant tree peonies with the crown of the plant (where the stem and roots connect) 4 to 6 inches to the ground. Snow Lotus, Pink Lotus, and Cup of Shining Night are examples of tree peony that have shown to be particularly heat tolerant.
Intersectional Peonies
Tree peony and herbaceous peonies are taller than intersectional peonies, commonly referred to as Itohs. Just after the other two, they begin to blossom. The flowers come in a variety of colors and are normally around 8 across. Compared to herbaceous hybrids, intersectional peonies are more tolerant of heat and humidity, and the majority will thrive in zones 4-9. Bartzella, Keiko, and White Emperor are a few examples.
Tips for Growing Peonies in the South
Look for microclimates where the soil stays cooler than usual while selecting a planting spot. It is best to have full morning sun and partial afternoon shade. Another approach to provide your peony with some shade from the afternoon sun is to plant it close to a big bush. Drip irrigation should be planned from late spring through early fall. After planting, add a layer or two of mulch to the soil to assist the soil retain moisture.
To ensure that your plants bloom before it gets too hot outside, use early-blooming peony cultivars when growing them in the south. Peonies with single or semi-double flowers typically perform better than doubles, according to gardeners in zones 8–9.
Herbaceous peonies should be planted even more shallowly in warm climates than they are in the north. The thick, tuberous roots, which are really simply modified stems, should be planted just half to one inch below the soil’s surface.
Herbaceous hybrids and intersectional peonies may require dormancy forcing in zone 9. Cut the plants back to the ground in November to accomplish this. The natural leaf fall that would take place in colder climates is mimicked by this.
In the south, it is generally accepted that if folks in your neighborhood can produce apples, you can definitely grow peonies as well. Remember that it typically takes fresh peony at least 3 years to put on a good floral display. You might also find the following articles to be of interest for general planting and care instructions:
Where do peony thrive?
Now that you are aware of the distinctions between the two primary Peonies, let’s approach your choice based solely on the available information.
Location & Climate: If you reside in the extreme south or north, temperature and humidity may have a significant impact on your choice of peony.
Garden peonies will thrive if you are in a northern region with a shorter, cooler growing season. Garden Peonies are especially popular in Zones 3 through 8, where they may require a little more care.
- A tip for getting them to behave perfectly if you live in the deep south is to select an early-blooming type that will go into flower before the summer heat arrives.
- In the same way, a late-blooming Garden Peony is likely to succeed better in zone 3’s northernmost regions, where temperatures will have warmed up enough for it to flourish during their peak bloom period.
Available Sunlight: Unlike Itohs, which love dappled light and can even take part-sun, Garden Peonies require full sunlight. As a general rule, your garden will be exposed to more sun and humidity the further south you live. You should give your peony more room in hotter, brighter climates so they may receive more air circulation and perhaps a little less sun than usual.
Can peony thrive in warm weather?
Slideshow of 20 stunning peonies
What’s fresh: Herbaceous and tree peonies are crossed to create itoh hybrids, also known as intersectional hybrids. They can reach a height of 3 1/2 feet, produce flowers in lavender, pink, copper, yellow, or cream, and bloom for a longer period of time than typical herbaceous varieties.
Since their stems are more thicker and more sturdy than those of herbaceous species, they are effective in supporting large cups of petals.
Where to grow: Peonies do best in cooler regions (Sunset zones 111; A1A3), where the winters are particularly chilly. However, some will thrive in warmer environments (see list below). Under zones 1420, all are worthwhile attempts in dappled shade. There, give the plants plenty of water and midday shade.
When to plant: In late April in warmer climates, plant container-grown plants; in May or June in colder climates. In 5-gallon containers, 3-year-old peony should blossom more.
Spring or fall, from containers used for nurseries: Place the plant in the ground with the top of its rootball level with the dirt after loosening the soil and adding copious amounts of compost, being careful not to disturb the plant’s delicate feeder roots. Or move it into a sizable (18 to 24-inch diameter) container that is deeper on the outside than the inside.
Plant herbaceous peony roots with eyes 2 inches deep in cold climates and 1 inch deep in warmer climates in the fall. In cold climates, itoh hybrids should be planted 3 inches deep; in warmer climates, 2 inches deep.
How to feed and water: Water frequently. When the first leaves emerge in the spring, fertilize with a low-nitrogen fertilizer (such 5-10-10) and then once more when the final flower has faded.
When to pick: Cut stems just as flower buds start to open to harvest blossoms for bouquets; leave at least three leaves on the plant to feed it for the following year. Blooms will keep for up to a week in vases. Although Itoh hybrids generate more flowers per stem as the plants become older, the majority of cultivars only produce one bloom per stem.
After flowering, prune down herbaceous and Itoh hybrid peonies in the fall; fresh growth will appear in the spring.
Grab a peony.
For cold climates, pick: There are three new Itoh hybrids—crosses between tree peony and herbaceous peonies—called “Bartzella,” “Pink Double Dandy,” and “Yellow Doodle Dandy.” Bartzella has unusually enormous, bright yellow blooms.
Four herbaceous favorites for cool or warm climates include “Blaze,” a vivid red single, “Festiva Maxima,” a white double with crimson flecks in the middle, “Sarah Bernhardt,” or “Sea Shell” (satiny pink single).
Shop: Purchase plants (itoh hybrids can cost up to $100 at nurseries, while ordinary herbaceous can cost $40), beginning in late April in warm climates and May in chilly ones. Plants that are three years old and are housed in five-gallon containers will reliably blossom.
Visit and purchase: The 200 or so varieties of herbaceous and tree peonies at Chateau CharMarron Peony Gardens (5335 Sierra Rd., San Jose; 408/251-7048) begin flowering in late March and last through June. Visit Adelman Peony Gardens next month (May 1–Jun 15; 5690 Brooklake Rd. N.E., Salem, OR; 503/393-6185) to see 300 varieties spread across 10 acres.
In Zone 9, can tree peonies be grown?
In zones 4-9. tree peonies thrive. They require great soil drainage and to be planted deeply.
First, tree peony ought to be planted in areas with few competing trees or plants with their roots. Tree peonies should be spaced 5 feet apart. Plan ahead, though, as tree peony dislike being moved. Keep in mind that your plant grows slowly and will take some time to fill in this space. Tree peonies should be spaced 5 feet apart.
Second, tree peonies require neutral pH and compost-rich soil. They should be planted in an area with good drainage because, like all peonies, they cannot tolerate having their feet wet.
Third, although though they can survive in direct sunlight, tree peonies prefer diffused light. Your tree peony would prefer dappled sunlight throughout the day, or morning sun and afternoon shade. This will increase the amount of sunlight reaching your tree peony while also extending the flower’s life. If you choose to plant your tree peonies in full sun, you might want to use wax paper umbrellas to keep the flowers from fading. You should also keep a close eye on the soil’s moisture level to ensure that your tree peony doesn’t dry up. The varieties with more petals will endure more intense sun than the varieties with fewer petals.
All peony require a pH that is neutral, rich soil, and good drainage. You want to mix equal parts sand, clay, and compost to get a sandy loam soil. Wet feet are intolerable to them. Avoid planting in low-lying places where water collects, and exercise caution when growing near sprinkler or irrigation systems.
In zone 9b, which peony thrive the best?
Late February to early March is when tree peony often bloom. Around April 1st, herbaceous peonies begin to bloom.
Growers have had success with all varieties of peony, including tree, herbaceous, and intersectional varieties. Itoh hybrids are another name for intersection peonies.
All plants have been harmed by the exceptional heat wave in 2012 and the drought in 2011.
One gardener claimed that many of the well-established plants in her gardens did not survive the hardship of the summers of 2011 and 2012. These include certain tree peonies, contemporary rose hybrids, and hydrangeas. Tree peonies that had flourished in the ground for 6-7 years perished as a result of drought-related stress. Despite the drought, this extremely knowledgeable gardener stated that her “Snow Lotus” tree peony has performed exceptionally well. In fact, she claimed that it is the only tree peony that she would without a doubt advise gardeners in her region to grow. She has a specimen that is almost ten years old, 4.5′ tall, and produced 26 flowers the previous year.
In Texas, amid years of drought, the rockii tree peony ‘Snow Lotus’ has proven to be a particularly dependable grower.
It makes sense that ‘Snow Lotus,’ a domesticated variation of the wild species Paeonia rockii, can withstand dryness and stress better than other varieties of tree peonies that have undergone cross-pollination under more hospitable conditions. P. rockii’s natural habitat is in northwest China, particularly in the desert Gansu Province, where there is only an average of 12 inches of rain per year. This amount of precipitation is less than half of what Dallas, Texas, received during the 2011 drought.
This image was captured in May in the countryside near Lanzhou, in the Gansu province of northwest China. The P. rockii species of tree peony is native to this area.
The rockii or Gansu Chinese tree peonies are therefore suggested for growers in hot, arid regions of the country who are interested in growing tree peony.
Herbaceous peonies are extensively grown in this region and present no unique difficulties.
Site selection: It is recommended to plant peonies in warmer regions so that they can get some shade from the intense summer sun. We advise early sun and afternoon shade for all planting zones. If this is not feasible, place peonies close to a sizable shrub so they can receive some shade from the intense sun.
At least two deep waterings per week are recommended in the spring and summer, with any additional drinks needed in between. Particularly for newly planted peonies, this is crucial.
Additional advice: At the beginning of November, remove any lingering tree peony leaves. Cut the foliage of herbaceous peonies to the ground now as well. Make sure the “eyes” or buds are essentially at the surface when planting herbaceous peonies, with only a thin coating of soil or mulch covering them.
Where may peony be grown most successfully?
Peonies prefer an area with good soil drainage and sunlight. A healthy airflow around the plant is also crucial. Peonies are able to avoid their sole significant disease issue, botrytis, thanks to these growing circumstances.
Botrytis can be found in most soils, just like other fungi-related illnesses. Only poor plants, unusually cool and wet conditions, sick plants nearby, or weak plants rarely become an issue. Blackened buds, stems, and occasionally decaying at the base of the plant are indications of botrytis. Disconnect and remove any impacted areas (put this material in the trash, not in your compost pile). Preventing botrytis issues is the best course of action, and this starts with careful planting.
The gorgeous semi-double Abalone Pearl peony has gentle pink-peach petals that contrast with bright orange anthers.
Is it difficult to grow peonies?
I’ve long been in love with peonies, including herbaceous, intersectional, and tree varieties. I adore their classic elegance, vibrant colors, stunning flowers, and, of course, exuberant scent. Peonies belong in every garden, and every gardener should incorporate them.
Why grow peonies?
Peonies have a rather brief flowering season, which discourages many people from cultivating them. They may believe that there are more cost-effective and colorful plants available, yet when in bloom, peonies are incomparable.
Peonies are regarded by many gardeners as being a challenging plant to grow. The peony blossom is actually a fantastic low maintenance plant, ideal for both inexperienced and seasoned gardeners.
The peony bloom is astounding in its sheer size. Many intersectional peonies, also known as Itoh peonies (a cross between herbaceous and tree peonies), produce blossoms the size of dinner plates in a variety of colors, including white, yellow, pink, and purple. Beautiful single, semi-double, and double flowers are available.
Although some are more fragrant than others, most peony are fragrant. For instance, the lovely double white blossom Paeonia lactiflora ‘Duchesse de Nemours’ AGM has a cream center and the most delicious scent. Paeonia lactiflora ‘Catharina Fontijn’ is one of my favorites. It features delicate blush blossoms that give off a lovely but potent fragrance.
So the peony has fragrant, magnificent, and eye-catching blossoms. What else can you get from this plant? Contrary to the widely believed belief that peonies are delicate and difficult to manage, they are actually very hardy and simple to grow. For a while, they will live contentedly in a reasonably large container, but ultimately they will be happier in the ground.
What are the 3 rules for growing perfect peonies?
With peony, there are a few things to keep in mind, but if you do them correctly, you’ll enjoy decades of hassle-free gardening and the most exquisite display of color and perfume that just gets better with time.
Don’t dig deep
Do not bury your peonies too deeply. Less than 2.5 cm below the surface is the maximum depth at which the tuberous roots may be buried. Some intersectional peonies, like “Bartzella” AGM or “Julia Rose,” have finely cut leaves that become scarlet red in the spring and autumn, while many herbaceous or garden peonies have strong red stems and light green soft foliage, but they simply will not flower if they are planted any deeper.
If a peony in your yard isn’t blooming, it’s usually because you planted it too deeply or you meticulously mulched the borders, which resulted in burying it. Simply wait until the fall and then lift your peony and replant it at the proper depth, being careful not to damage the buds on the roots.
Sun’s out, peonies out
Your peony should be planted in a sunny area. Even while many types, including Paeonia lactiflora ‘White Wings,’ can handle moderate shade, if your peony bloom is in excessive shade, it won’t flower as well.
Drain well
Put your peony on soil that is rich and well-draining. These flowers normally don’t care too much about the soil and do well in free-draining chalky or clay soils. In the winter, they dislike sitting in water.
You can see that the guidelines primarily concern planting your peony. Your peony will be happy to be left alone once it has been planted. In actuality, you most likely don’t need to feed your peony if you have rich, nutritious soil.
A balanced, all-purpose fertilizer like Growmore applied in the spring should work if your soil isn’t the best. In order to prevent peony wilt, it is also a good idea to trim back and remove the dead leaves in the autumn.
Bonus peony growing tips
Peonies are dependable garden performers since they require little upkeep. They won’t overgrow your garden like triffids; most of them will only reach heights of 80 to 90 cm and widths of 60 to 80 cm. They disappear during the winter and reappear in the spring to continue to delight you (this does not apply to tree peonies, whose woody stems are present all year).
Generally speaking, they do not actually suffer from illnesses and pests, and once established, they require minimal maintenance. In fact, deer and rabbits don’t bother them either, which makes them perfect for gardens in rural areas.
Let’s dispel a different misconception about peony flowers while we’re talking about them, which is that they dislike being relocated. The plants should be carefully lifted in the fall and replanted or divided, subject to regulation number 1 (above). Do not overwater them if you are putting them in a container and keep 3-5 buds on each piece of divided root. That’s how simple it is.
You must be patient since peonies need time to mature. Even though it would seem alluring to buy a smaller, less expensive plant and wait for it to develop, my recommendation is to select a well-established peony that is at least 3-5 years old or more in order to guarantee success.