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PEONIES

Dummer. ゛☀
2017年08月06日
BOTANICAL NAME: Paeonia
PLANT TYPE: Flower
SUN EXPOSURE: Full SunPart Sun
SOIL TYPE: Loamy
SOIL PH: Neutral
FLOWER COLOR: PinkRedWhiteYellow
BLOOM TIME: Spring
Peony flowers are perennials that come back every spring to take your breath away. The plants may live longer than you do—some have been known to thrive for 100 years.
Peony plants require little maintenance as long as they are planted properly and establish themselves; they do not respond well to transplanting.
They’re hardy to Zone 3 and grow well as far south as Zones 7 and 8. In most of the country, the rules for success are simply full sun and well-drained soil. Peonies even relish cold winters, because they need chilling for bud formation.
Peonies make fine sentinels lining walkways and a lovely low hedge. After its stunning bloom, the peony’s bushy clump of handsome glossy green leaves lasts all summer, and then turns purplish or gold in the fall, as stately and dignified as any shrub.
In mixed borders, peonies bloom with columbines, baptisias, and veronicas, and combine well with irises and roses. Plant white peonies with yellow irises and a froth of forget-me-nots; set off pink peonies with blue Nepeta or violets.


PLANTING
When to Plant Peonies
Plant peonies in the fall: in late September and October in most of the country, and even later in the South. (If you must move an established plant, this is the time.)
Peonies should be settled into place before the first hard frost. Spring-planted peonies just don’t do as well, experts agree; they generally lag about a year behind those planted in the fall.
How to Plant Peonies
Grow peonies in deep, fertile, humus-rich, moist soil that drains well. Soil pH should be neutral.
The soil will benefit from the addition of organic material in the planting hole. If the soil is heavy or very sandy, enrich it with compost. Incorporate about 1 cup of bonemeal into the soil. Tamp soil firmly. Learn more about soil amendments and preparing soil for planting.
Peonies are not fussy, but choose your location wisely, as they resent disturbance. Provide shelter from strong winds. Plant away from trees or shrubs as peonies don’t like to compete for food and moisture. Space them three to four feet apart for good air circulation.
Peonies like full sun, and though they can manage with half a day, they bloom best in a sunny spot.
Peonies are usually sold as bare-root tubers with three to five eyes, divisions of a three- or four-year-old plant.
Dig a generous-sized hole, about two feet deep and two feet across in well-drained soil in a sunny spot. If the soil is heavy or very sandy, enrich it with compost. Incorporate about one cup of bonemeal into the soil. Tamp it firmly.
Set the root so the eyes face upward on top of the firmed soil, placing the root just 2 inches below the soil surface. (In southern states, choose early-blooming varieties, plant them about an inch deep, and provide some shade.)
Don’t plant too deep! In most of the country, the peony’s eyes (buds) should be no deeper than 1-½ to 2 inches below the soil line.
Then, backfill the hole, taking care that the soil doesn’t settle and bury the root deeper than 2 inches.
Water thoroughly.
CARE
Like children, young peonies take time to develop. They usually need a few years to establish themselves, bloom, and grow.
Peonies thrive on benign neglect. Unlike most perennials, they don’t need to be dug and divided.
Spare the fertilizer. Work the soil well before you plant, mixing in a little fertilizer, and that should be enough.
If your soil is poor, the time to apply fertilizer (bonemeal, compost, or well-rotted manure) is early summer, after the peonies have bloomed and you have deadheaded. Don’t fertilize more than every few years.
Help the stems. If peonies have any structural weakness, it is their stems, which are sometimes not strong enough to support their gigantic blossoms. Consider three-legged metal peony rings that allow the plant to grow through the center of the rings.
Deadhead peony blossoms as soon as they begin to fade, cutting to a strong leaf so that the stem doesn’t stick out of the foliage. Cut the foliage to the ground in the fall to avoid any overwintering disease.
Don’t smother peonies with mulch. Where cold temperatures are severe, for the first winter after planting you can mulch VERY loosely with pine needles or shredded bark. Remove mulch in the spring.
PESTS/DISEASES
Peonies are generally very hardy. They are susceptible to Verticillium wilt, ringspot virus, tip blight, stem rot, Botrytis blight, leaf blotch, Japanese beetle, and nematodes.
Many gardeners wonder why so many ants crawl on the peony buds. They are eating nectar in exchange for attacking bud-eating pests. Never spray the ants; they’re helping you nurture peonies to bloom!
Luckily, peonies are also one of many deer-resistant plants you can grow in your garden.
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