Paeonia 'Scarlet Heaven'
Overview
Uses: Perennial borders, specimen planting near entries and seating, cut-flower gardens, mass plantings for early summer color.
Benefits: True scarlet single flowers with a gold center, stems strong enough to stand through rain without staking, and deeply cut foliage that stays clean and upright long after ordinary peonies have flopped.
USDA Hardiness Zones: 4–9
Sun: Full Sun, Partial Sun/Shade
Life Cycle: Hardy Perennial
Growth Habit: Mounding, Rounded — sturdy self-supporting stems from a woody crown.
Bloom Color: Red
Mature Height: 2–3 feet
Mature Width: 2–3 feet
Bloom Season: Late spring to early summer
Growth Rate: Moderate
Summary
A peony that does not need a hoop, a cage, or an apology after a thunderstorm.
'Scarlet Heaven' is an Itoh peony — a cross between a herbaceous peony and a tree peony — and it inherited the best of both. From the tree peony side come the strong woody-based stems and the large, deeply divided leaves. From the herbaceous side comes the habit of dying back cleanly to the ground each winter and returning reliably in spring. The result is a plant that carries full-sized flowers on stems that actually hold them up.
The flower is a clean, saturated scarlet-red, single to semi-double, with a wide open face and a boss of golden stamens at the center. It is a harder, truer red than the wine and magenta tones most peonies fall into. Blooms are six inches across and come over a two to three week window in late spring, and because the plant produces side buds as well as terminal ones, the display extends past what a single flush would give.
The foliage is the underrated part. It emerges bronze-red, matures to a deep green, and stays presentable through the whole season — no midsummer collapse, no powdery mess, no bare gap in the border by August. In practice you are getting a small shrub-like mound that happens to flower spectacularly for three weeks.
Itoh peonies are slow to bulk up and correspondingly long-lived. A well-sited plant is a thirty-year proposition that improves every year and never needs dividing.
Care
Scarlet Heaven Itoh Peony Care
Plant in full sun for the heaviest bloom. Six hours is the working minimum; in the warmer end of the range, light afternoon shade extends how long each flower holds its color without materially reducing bud count.
Soil should be deep, fertile, and well-drained. Peonies are long-term plants, so it is worth preparing a wide hole with compost rather than a narrow one. Planting depth is the detail that matters most: set the crown so the growth buds sit no more than one to two inches below the soil surface. Planted too deep, a peony will grow foliage for years and never flower.
Water regularly through the first two seasons. Established plants are fairly self-sufficient and need deep watering only during extended drought. Avoid keeping the crown constantly wet.
Feed lightly in early spring as growth emerges, using a slow release fertilizer worked into the surface around the plant. Heavy nitrogen produces leaves at the expense of buds.
Maintenance is minimal. Deadhead spent flowers to keep the plant tidy. Cut the stems back to two to three inches above the ground after the first hard frost — Itoh peonies die back like a herbaceous peony, not like a tree peony, and the woody-looking stems should not be left standing. Do not divide unless you have a reason to; these resent disturbance and take years to recover.
Size
What Size is the Scarlet Heaven Itoh Peony for Sale Online?
Our Scarlet Heaven Itoh Peony ships in a greenhouse-grade grow pot and is appropriately sized for its container at the time of shipment. If you have specific sizing or planting questions, please contact us.
How Large Does Scarlet Heaven Itoh Peony Grow?
Expect roughly 2 to 3 feet tall and equally wide, forming a rounded mound that widens gradually over many years. Space 3 feet on center. Young plants take three seasons to reach full flowering size, and the plant improves noticeably each year after that.
Additional Information
What is an Itoh peony?
It is an intersectional hybrid — a cross between a herbaceous peony and a tree peony, first achieved by Japanese breeder Toichi Itoh in the 1940s. The group is named for him. Itoh peonies combine tree peony flower size and stem strength with the herbaceous habit of dying back to the ground each winter.
What are some common names for this plant?
It is sold as Scarlet Heaven Itoh Peony, and the group is variously called Itoh peony or intersectional peony. Both refer to the same type of cross.
Do the stems need staking?
No, and this is the main practical reason to choose an Itoh over a traditional herbaceous peony. The woody-based stems hold six-inch flowers upright through wind and rain without support. Hoops and rings are unnecessary.
Do deer eat peonies?
Very seldom. Peony foliage contains compounds deer find unpalatable, and they are one of the more dependable choices in a browsed garden. Other plants that hold up under the same conditions are grouped in our Deer-Resistant Perennials and Grasses collection.
How long does it take to bloom well?
Expect a few flowers the first spring, a noticeably better display the second, and full performance from the third year onward. Itoh peonies establish slowly and then hold that performance for decades without needing division. More long-lived border plants are in our Perennials collection.
