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!
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.
What degree of heat can a peony endure?
While tree peonies and some early-blooming herbaceous and intersectional varieties do well in moderate areas, where they bloom from late April to early June, all peonies prefer lengthy, frigid winter temperatures. Festiva Maxima, a creamy white intersectional with pink undertones, and the rosy “Sarah Bernhardt” are two herbaceous early bloomers. “Bartzella,” a lemony yellow intersectional, will also fall dormant in climates where winter days are not frequently bitterly cold.
The majority of peony require prolonged winter chill, which is defined as periods of time when temperatures are between freezing and no higher than 45 degrees F. Most peony require 480 cool hours or more to achieve a suitable dormancy.
Herbaceous species of the three types of peony require the most hours of darkness. Herbaceous species are more likely to become dormant in mild climates if planted no deeper than 1 inch below the surface of the soil. There has to be considerably deeper planting of intersectional species and trees.
Is Zone 9 suitable for Itoh peonies?
Itoh peonies, which are hybrids of herbaceous and tree peonies, thrive in a variety of conditions and have magnificent foliage, enormous blooms, and a wide range of color options. In Zones 4–9, hardy.
If you delve deeper into the magnificent beauty of the Itoh peony, you’ll find an inspirational tale of tenacity. An Itoh peony is produced by crossing a typical garden peony (Paeonia lactiflora) with the eye-catching tree peony (Paenoia suffruticosa). For many years, plant breeders believed that because these two peony kinds have such dissimilar parents, a successful hybrid of them would not be possible.
Toichi Itoh, a Japanese plantsman, worked tirelessly to complete this cross. Itoh made this pursuit his life’s work and succeeded in 1948 by breeding the tree peony (Paeonia lactiflora ‘Kakoden’) with the herbaceous peony (Paenoia x lemoinei). 36 plants were born from the productive cross. Nine of those plants exhibited tree peony traits and were dubbed Itoh peonies or Itoh Hybrid peonies. Intersectional peonies and intersectional hybrids are occasionally mentioned. These plants are Itoh peony subspecies.
There were so few Itoh peonies available when they were originally made available to the public and presented to the nursery industry that the cost of one plant exceeded $1,000. The lengthy process of raising these plants to the point where they could produce divisions was reflected in the expensive price tag. The cost of Itoh peony has decreased to between $50 and $100 per plant thanks to the use of tissue culture techniques, which multiply them more quickly.
Because they produce flowers and foliage that resemble tree peonies on a plant that acts like a perennial, Itoh peonies are worth paying any price for. Each year, when the first frost hits, the plant dies back to the soil, and the next spring, fresh growth appears from the ground. This puts an end to concerns about a tree peony’s bloom buds on woody stems being damaged by a late spring frost.
When an Itoh peony’s flower buds open, they reveal big, tree peony-type blooms that are dinner-plate size and come in a variety of colors, including golds and yellows that are less common in herbaceous peony varieties. Despite the huge bloom heads, there is no need to anchor the plants because they have sturdy stems similar to those of a tree peony. A mature Itoh peony has a blooming season that can yield up to 50 blossoms.
The Itoh peony group achieves its optimum bloom time while the herbaceous peony group is completing. Itoh peonies often begin flowering when herbaceous peonies are in bloom. There is a strong, protracted floral display because many Itoh peony plants generate flowers from secondary buds that develop beneath the first flower. Three to four weeks are a luxuriously long flowering period for each Itoh peony plant.
In the garden, Itoh peony hybrids have strong resistance to powdery mildew, which afflicts herbaceous peonies, and botrytis blight, which frequently affects tree peonies. They are also deer-resistant. The Itoh peony group has blossoms that create excellent cut flowers, just like its peony progenitors. Itoh peony typically reach heights of 2 feet and a width of 3.5 feet.
In what kind of climate may peony flourish?
Peony flowers offer a brilliant splash of color to the landscape and are beloved by most gardeners for the beauty of their magnificent blossoms, their lovely smell, and their robust foliage that changes shades over the seasons. One of nature’s most beautiful perennials, they are practically careless once established, produce some of the nicest cut flowers, are deer resistant, and survive for years.
Nevertheless, choosing the best peony might be challenging given that there are over 3000 cultivars of peonies available (!!!). If you reside in a warm spring climate, you could want to take into account peonies that can endure the rain or the heat.
Peonies that can withstand rain: Springtime provides beautiful brightness as well as downpours that could splatter and destroy peony blossoms over the grass. The opulent, huge peony blossoms frequently gather and retain a lot of water, overloading the stalks. Even strong stems can fall or break because of their propensity to arch toward the ground. Sadly, peony rings do not protect the blossoms from being broken by a heavy downpour. The only way to keep the lovely blossoms upright above the foliage may be to stake each stalk. Many of us, though, are unwilling to provide that kind of attention.
Heat-resistant peonies: Peonies thrive in chilly areas (Hardiness zones 3-8). For them to flower successfully, they require a significant duration of winter cold (to induce dormancy) and not too much heat and humidity during the flowering season. Choose early-blooming types that bloom before the arrival of hot weather if you live in a southern state. Choose plants with single or semi-double flowers, and put them in a cool, shaded spot about an inch deep (so they get the tiniest frost nip).
Here are several peonies that have demonstrated heat or rain resistance and could be the showpiece of your spring garden.
In Zone 9, when can peonies be moved?
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.
How well do peony grow in Zone 10?
Herbaceous peony and tree peonies are the two main varieties of peonies that can be grown. Select intersectional peonies, a cross between herbaceous and tree peonies, if you prefer a bit of each. Mid-spring through mid-summer sees peony blooming. Despite being brief, the flowering season is striking, with huge, single or double flowers bursting in a rainbow of hues. Depending on the species, peonies can be found in U.S. Department of Agriculture plant hardiness zones 3 through 10.
Can peony withstand frost?
A lot of winter peony protection is actually unnecessary because these hardy plants require around six weeks of temperatures below 40 degrees Fahrenheit (4 degrees Celsius) in order to blossom the following year. Continue reading for more details on peony cold tolerance.
What conditions favor the growth of peonies?
I love peonies, but I live in a region where it could be too warm for them. Can I grow peonies in my area? is a common query. You can use the following suggestions to decide whether peonies are likely to thrive in your area.
Garden peonies prefer cold winter weather and need at least 30 days in a row with temperatures below freezing. It is not necessary for it to freeze and thaw because the objective is to maintain the roots’ chilly temperature. Before purchasing any kind of peony, think about whether you can feed your plants with enough cold weather during the dormant season so they can grow and blossom.
Choose peony kinds that bloom early in the season, before your late spring/early summer weather becomes too hot, if you live in zones 7 and 8. The description of each cultivar on this website specifies whether it blooms early, midseason, or late. Recognize that planting in zone 8 is a bit of an experiment because it indicates the edge of weather where peonies may successfully blossom. Peonies that bloom in the middle to end of the season may endure in warm climates, but they are not likely to reliably and prolifically blossom.
Your peony roots’ planting depth affects how many flowers you get. The “eyes” or tiny pink or red growth points should be planted 1 to 2 inches under the earth, with the deeper end of the spectrum being preferred in the coldest locations (zones 3-5). Zones 6 and 7 and even zone 8 gardeners who plant just 1″ or even 1/2″ deep will have the best results.
Site your peony in hot regions where they’ll get a little relief from the worst afternoon sun. The best setting is one with filtered late-day light.
Remember that peonies produce numerous large, typically heavy flowers when they are mature, wherever they are grown. (Which, I presume, is one of the reasons you adore them.) The thickly petalled double and semidouble blossom varieties have a propensity to collect rain or sprinkler water. Young plants can have ring or crisscross supports placed around them to allow shoots to grow through, stabilizing blossoming stems, and eventually blending in with the dense foliage. On the plus side, if your peonies droop in the rain, it gives you the perfect justification to cut them to your heart’s content, carry bunches to work, share them with friends, and arrange bouquets all over the house. That would be really terrible.
