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Intersectional Peony, Itoh Peony 'Bartzella'


Family: Paeoniaceae
Genus: Paeonia (pay-OHN-ee-uh) (Info)
Cultivar: Bartzella
Hybridized by Anderson
Registered or introduced: 1986
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24-36 in. (60-90 cm)


24-36 in. (60-90 cm)


USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:

Sun to Partial Shade


Unknown - Tell us

Bloom Color:

Bright Yellow

Bloom Time:

Late Spring/Early Summer



This plant is resistant to deer

Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

Unknown - Tell us

Seed Collecting:

Unknown - Tell us

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us


This plant has been said to grow in the following regions:

Huntsville, Alabama

Benton, Arkansas

Coto De Caza, California

San Jose, California

Hanna City, Illinois

Saint Charles, Illinois

Cambridge, Massachusetts

Lenox, Massachusetts

Saint Paul, Minnesota

Southold, New York

Clemmons, North Carolina

Amelia Court House, Virginia

Lake Stevens, Washington

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Gardeners' Notes:


On Jul 12, 2011, Pistil from Lake Stevens, WA (Zone 8a) wrote:

near Seattle- Grows GREAT. Best Peony I have ever seen. Does NOT need to be staked as it does not flop even with heavy spring rain when in bloom. Tons of huge yellow flowers. I got mine from A&D Peony Nursery, Snohomish, WA. Near Flower World. They have been there forever. I went and picked out some, then they shipped them at proper planting time. Nice big healthy plants.


On May 8, 2008, braun06 from Peoria Heights, IL (Zone 5b) wrote:

I bought one in the spring of 07 through Plant Delights Nursery. They sold them bareroot right after they bloomed. It wasn't the best time to dig up and ship a Peony. Its best in the fall for less stress. It was an impressive plant though and shrugged the stress off for the next season.

It was a very decent plant. Despite shipping in that time of year being barerooted, it has come back this year so huge and even with a flower bud. It grows interesting considering it is half tree peony.

I had to move the bartzella after planting it so it has been moved 2 times in a 3 year span, due to moving into a new house. I wasnt sure how it would handle it but after its move it still came back this year again to flower and even larger in size. It is very toug... read more