Bartzella Itoh Peony

Paeonia x 'Bartzella'

Plants that Work®

Golden Yellow Blooms on a Woody Shrub Form - Rare Itoh Hybrid Peony Produces Dozens of Flowers
Cold Hardy: Thrives in Zones 4-9
Grows 2-3 ft Tall and Wide
Showy Red, Yellow Blooms in Late Spring
Deer Resistant, Heat Tolerant, Rabbit Resistant

$120⁷¹

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Plant Size

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Planting & Care

Where to Plant

Sunlight: Provide at least six hours of direct sunlight daily; more sun equals more stunning blooms, which is a great tradeoff. While Bartzella will tolerate light afternoon shade, expect fewer flowers and a slightly less vigorous growth habit.
Soil: Peonies hate sitting in soggy ground, so ensure excellent drainage; heavy clay should be lightened with generous amounts of compost and some grit. Aim for rich, neutral garden loam, positioning the eyes of the crown no more than one inch below the soil surface.

Watering Requirements

During the first year, water your newly planted peony weekly to ensure the root system establishes well. Once established, Bartzella is quite drought-tolerant, but consistent moisture during spring bud development will support the largest, most vibrant flowers. Inconsistent watering during dry spells will stress the plant, typically resulting in noticeably smaller blooms and less overall vigor.

Pruning Tips

Itoh Peonies bloom on new wood, much like their herbaceous parent, so the clean-up is simple and non-negotiable for best performance. Wait until the foliage naturally dies back and turns brown in late autumn, then cut all the stems down to 3-5 inches above the ground. Think of this process as a necessary fall haircut that clears away old material and channels all the plant’s energy into next spring’s robust root and bud development.

Fertilizer Needs

Apply a granular, low-nitrogen fertilizer like a 5-10-10 or bone meal lightly around the crown as new shoots emerge in early spring. The most crucial tip is to avoid using high-nitrogen lawn fertilizer, especially late in the season. Too much nitrogen encourages luxurious, weak leafy growth but significantly reduces the number of the large, spectacular flowers you are hoping to see.

Delivery and Shipping

Shipping Rates

Ships in 7-10 business days • Tracking provided • Weather protected

Under $50	$9.99
$50 - $99.99	$14.99
$100 - $149.99	$16.99
$150 - $198.99	$24.99
$199+	FREE

✓ Zone-specific timing • ✓ Professional packaging • ✓ Health guarantee

Understanding Our Container Sizes

At Nature Hills, our plants are sold in industry-standard nursery containers. You will notice we use the word "container" rather than "gallon." Container numbers follow a nursery trade size standard, not liquid volume. The number tells you the plant's size category and general maturity level. A larger container means a more established plant with a stronger root system.

Container Sizes

Quart

Plant age: 6 months to 1 year
Best for: Ground covers, perennials, ornamental grasses
What to expect: Our smallest and most affordable size. Well-suited for planting in multiples across a large area. Allow 1 to 2 seasons for full establishment.

#1 Container

Plant age: 1 to 2 years
Best for: Shrubs, perennials, smaller trees
What to expect: About the size of a large coffee can. A well-developed root system in a manageable size. Good value choice when you have time to let the plant grow into the space over a season or two.

#2 Container

Plant age: 2 to 3 years
Best for: Shrubs and trees where you want faster establishment
What to expect: A noticeable step up from a #1 in both plant size and root development. Good choice when you want visible presence without going to a larger size.

#3 Container

Plant age: 3 to 4 years
Best for: Most plants, most situations — flowering trees, shade trees, evergreen shrubs
What to expect: Our most popular size. Strong, developed root system. Plants in a #3 container make an immediate visual impact from day one. If you want a head start rather than waiting seasons for a plant to fill in, this is typically the right choice.

#5 Container and Larger

Plant age: 4 to 5+ years
Best for: Specimen plants, privacy screens, maximum instant impact
What to expect: Large, mature plants ready to make an immediate statement in your landscape. We also carry #7 and larger sizes for select varieties.

Why "Container" and Not "Gallon"?

Nursery container sizes follow an industry trade standard established for the nursery and horticulture industry. The number is a size designation, not a measurement of liquid volume. Actual soil volume varies by plant type, root mass, and growing medium. Using "container" is the accurate industry term. When you see #1, #2, or #3, think of it as the plant's size tier, not a gallon measurement.

Root Pouch Containers

Some Nature Hills plants arrive in a Root Pouch, a breathable fabric container made from 100% recycled materials. Root Pouches encourage denser root development through air pruning, which discourages root circling and promotes a stronger, more fibrous root ball at the time of planting.

Plants growing in Root Pouch fabric containers, showing the breathable woven fabric construction

There are two types. Knowing which one you have changes how you plant:

Degradable (brown or tan fabric): Plant the entire pouch directly in the ground. The fabric breaks down naturally in the soil over time.
Non-degradable (black or gray fabric): Remove the pouch before planting. Cut the bottom open with scissors, then peel the sides away. The fibrous root ball will hold its shape.

Not sure which type you have? Check the tag on your plant or contact us and we will confirm.

Full Root Pouch planting guide

Choosing the Right Size

Size	Plant Age	Best For
Quart	6 mo to 1 yr	Ground covers, perennials, grasses. Budget-friendly for mass plantings.
#1 Container	1 to 2 yrs	Shrubs, perennials, small trees. Value choice for patient gardeners.
#2 Container	2 to 3 yrs	Shrubs and trees where you want faster establishment.
#3 Container	3 to 4 yrs	Most plants. Immediate visual impact. Our most popular size.
#5 and larger	4+ yrs	Specimen plants, privacy screens, maximum instant impact.

Still not sure which size is right for your project? Our plant specialists are happy to help. Contact us and we will point you in the right direction.

Plant specifications
Plant Characteristics	Cold hardy, Low Maintenance, Flowering, Fragrant, Deer-resistant, Drought resistant, Attracts pollinators
Hardiness Zone	3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a
Sunlight	Full sun
Height	2-3 ft
Width	2-3 ft
Watering Needs	Moderate
Preferred Soil	Peaty
Growth Rate	Moderate
Growth Habit	Upright
Plant Life Cycle	Perennial
Blooms In	Spring
Flower Color	Red, Yellow
Foliage Color	Green
Fragrant	Yes
Suitable Space	Outdoors
Plant Name	Peony
Botanical Name	Paeonia x 'Bartzella'
Species	x
Cultivar	Bartzella
Class	Saxifragales
Does Not Ship To	AK, HI, ID, MT, PR

Sturdy, Bright and Abundant Bartzella Itoh Peony

Rare Yellow Peony Blossoms
Classic Rounded Bush Form
Long-Lasting Blooms
Attracts Pollinators
Fantastic for Cut Floral Arrangements
Deer Resistant
Full Sun, Partial Shade
Fast Growing

If you’re in the market for lots of big flowers then the Bartzella Itoh Peony may be what you’ve been looking for. These Itoh peonies are made by crossing tree peonies and herbaceous peonies, which result in a bush that can produce dozens of gorgeous flowers once given time to properly mature.

This big shrub-like peony’s blooms announce the start of summer with large, puffy petals that almost resemble a lion’s mane at the edges. The petals themselves sport a yellow to golden color, which is rare among peonies, and tend to have specks of red in and around their core.

The flowers on the Bartzella Itoh Peony are large for your typical flower, almost earning it the name 'Bartzilla'.

Forget to pick up flowers for date night? Don’t sweat, just take some shears to the garden! The golden flowers on the Bartzella Itoh Peony bush are great for bouquets, and last close to a week in a vase. A bouquet of these flowers is also a great way to show off their refreshing lemony scent!

Wildlife in your neighborhood such as deer and rabbits will have little to no interest in this particular plant, but pollinators love them! Butterflies will come in droves in the early summer to indulge in the nectar of these large blooms.

The Bartzella Itoh peony makes for a great centerpiece perennial due to its bigger size and abundant flowers during the summer. Announce the start of summer like a trumpet call with this bush of beauty and order yours today!

How to Use Bartzella Itoh Peony in the Landscape

Due to the size of this plant it makes for an attention-getter in the center of your perennial garden. This shrub-like flower, likewise, could be used to border walkways or beds if used in an urban garden or cottage-style garden.

The Bartzella Itoh Peony grows well with other flowers its size. Grow yours scattered amongst contrasting flowers such as roses and other perennial flowers for a gorgeous display of natural color. The resulting combination will be a sight to behold, and will smell amazing too!

This flower’s height makes it good as a higher level in a pollinator garden. Plant this in the center with decreasing levels of flowers for efficient pollination and attraction. The dense foliage of this plant should also provide some protection to pollinators that get caught out in bad weather.

#ProPlantTips for Care

The Bartzella Itoh Peony grows best at a distance from trees and shrubs, as competition for nutrients and moisture inhibits its growth. It should grow fine with other perennials its size, however.

Partial to full sun or part shade, the Bartzella Itoh Peony is pretty low maintenance. They prefer medium-moisture, well-drained soils in a decently sheltered environment for optimum growth.

To help the continued healthy growth of the Bartzella Itoh Peony one should remove faded flowers and trim down the foliage as the leaves begin to fade in the fall. The enormous blooms of this flower are known to catch rainfall and end up weighed down. Consider staking to help support Bartzella Itoh.

This plant is very long-lived, with the potential to survive for up to 50 seasons after maturing if taken care of! However, it is worth noting that Bartzella Itoh Peonies transplant best in September or October so if you need to move them in your landscape wait until fall.

The Bartzella Itoh Peony is a hardy-yet-enchanting addition to any garden. Pick a spot in your garden and order yours from our expert growers at Nature Hills Nursery today!

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Frequently Asked Questions

What USDA hardiness zones is Bartzella Itoh Peony suitable for?

Bartzella Itoh Peony thrives in USDA hardiness zones 4-8. This hardy perennial can withstand winter temperatures down to -30°F, making it suitable for most temperate climates. Plant in well-draining soil with full sun to partial shade for best bloom production.

What is the mature size and height of Bartzella Itoh Peony?

Bartzella Itoh Peony reaches 3-4 feet tall and wide at maturity, forming a substantial shrub-like presence in the garden. This robust perennial creates an excellent centerpiece for perennial beds or border plantings. Allow 3-4 feet spacing when planting multiple specimens available at naturehills.com.

Does Bartzella Itoh Peony grow well in full sun or partial shade?

Bartzella Itoh Peony thrives in both full sun and partial shade conditions. This adaptable perennial performs well with at least 6 hours of sunlight daily, though it tolerates some afternoon shade in hotter climates. Plant in a location with morning sun for best flowering and overall plant health.

How do I plant Bartzella Itoh Peony, including spacing and depth?

Plant Bartzella Itoh peonies with eyes 2 inches below soil surface in fall or early spring. Space plants 3-4 feet apart to accommodate their mature shrub-like size. Choose a location with full sun to partial shade and well-draining soil. Water thoroughly after planting and mulch around the base.

What are the care requirements for Bartzella Itoh Peony, like watering and fertilizing?

Bartzella Itoh Peonies thrive with deep, weekly watering and balanced fertilizer applied in early spring. Plant in well-draining soil with full sun to partial shade for best bloom production. Water at soil level to prevent fungal issues and mulch around the base. Shop at Nature Hills for healthy, field-grown plants.

Is Bartzella Itoh Peony grafted or grown on its own roots?

Bartzella Itoh peonies are grown on their own roots, not grafted. This hybrid cross between tree peonies and herbaceous peonies develops its own sturdy root system that supports dozens of blooms once mature. Plant with the eyes 2 inches below soil level for best establishment.

How should I handle shipping and unpack Bartzella Itoh Peony upon arrival?

Unpack your Bartzella Itoh Peony immediately upon arrival and inspect the roots for any damage. Keep the roots moist and plant within 24-48 hours if possible. If you can't plant right away, store in a cool, dark place with slightly damp packing material around the roots.

What pests or diseases affect Bartzella Itoh Peony, and how resistant is it?

Bartzella Itoh Peonies are naturally deer and rabbit resistant with excellent disease tolerance. Like most peonies, they may occasionally face botrytis blight in humid conditions or aphids in spring. Ensure good air circulation and avoid overhead watering to prevent fungal issues.

Bartzella Itoh Peony

Paeonia x 'Bartzella'