Data specific to Peonies (Edit)
Originator/Registrant: Hollingsworth
Year of Registration or Introduction: 1984
Cultivar Group (Type): Intersectional (Itoh) Hybrid
Season of bloom: Midseason (week 4)
Late Midseason (week 5)
Late (week 6)
Flower Form: Semi-Double
Flower Color: Yellow
Flower color description: Golden yellow, with soft red flares emanating from its center. Yellow stamens surround prominent ghost green carpels with pale sheaths and soft pink stigmata. Can have a deeper coloration in some years and with a more orangey aspect upon first opening.
Flower size: Large
Needs support: No
Awards: Gold Medal: 1996
Award of Landscape Merit: 2009

General Plant Information (Edit)
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Partial or Dappled Shade
Minimum cold hardiness: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
Maximum recommended zone: Zone 9b
Plant Height: 24-30 inches
Plant Spread: 3 to 4 feet
Fruit: Dehiscent
Flowers: Showy
Fragrant
Flower Time: Spring
Underground structures: Rhizome
Uses: Cut Flower
Wildlife Attractant: Bees
Propagation: Other methods: Division
Crowns
Parentage: Unknown Paeonia lactiflora x Alice Harding

Image
Common names
  • Intersectional Peony
  • Peony
  • Itoh Peony

Photo Gallery
Location: Athol, MA
Date: 2020-06-21

Date: 2017-05-07
Location: Ontario, Canada
Date: 2012-06-16
Uploaded by Aerith
Location: Oxfordshire, England
Date: 2019-06-08
Location: Mandan, ND
Date: 2021-06-17
Location: Athol, MA
Date: 2019-06-20
Location: Clinton, Michigan 49236
Date: 2024-05-26
Peony 'Garden Treasure' 24W22 20yo Itoh G3 (Hollingsworth, 1984)
Location: Oxfordshire, England
Location: Virginia
Date: 2018-05-12
Location: Athol, MA
Date: 2019-06-29
Location: Fairfax, VA
Location: Athol, MA
Date: 2018-06-11
Not fully open, beautiful first flower from Hollingsworth Peonies
Location: Meise botanical garden
Date: 2022-05-17
Location: Athol, MA
Date: 2018-06-13

Date: 2013-06-17
Location: Mandan, ND
Date: 2021-06-17
First bloom ever

Date: 2017-05-08
Location: Clinton, Michigan 49236
Date: 2024-05-26
Peony 'Garden Treasure' 24W22 20yo Itoh G3 (Hollingsworth, 1984)
Location: Meise botanical garden
Location: Clinton, Michigan 49236
Date: 2017-09-13
Location: Clinton, Michigan 49236
Date: 2015-06-01
"Paeonia x (Itoh) 'Garden Treasure', 2015, [Peony] (3-SD-Y) Itoh
Uploaded by kousa
Location: Kalama, Wa.
Date: 2024-05-17
  • Uploaded by Joy

Date: 2010-06-13
Photo courtesy of:  jackl-dee

Date: 2010-06-13
Photo courtesy of:  jackl-dee
Location: Athol, MA
Date: 2018-06-14
Location: Athol, MA
Date: 2018-06-17
Very interesting closeup after petals have fallen.
Location: Adelman's Peony Garden, Salem, OR
Date: 2017-05-22
Location: Clinton, Michigan 49236
Date: 2017-09-13
Location: Athol, MA
Date: 2018-05-16
Second season, May
Uploaded by magnolialover
Location: Athol, MA
Date: 2018-05-04
Location: My garden, zone 4 Wisconsin
Date: 2012-05-29
zone 4 Wisconsin
Location: Athol, MA
Date: 2018-06-03

Photo courtesy of Brooks Gardens Peonies. Used with permission.
  • Uploaded by Joy
Location: my garden zone 7A Cape Cod, MA
Date: 2017-06-15

Date: 2010-06-13
Photo courtesy of:  jackl-dee

Date: 2010-06-13
Photo courtesy of:  jackl-dee

Date: 2010-05-21
Photo courtesy of:  jackl-dee

Photo Courtesy of Crossview Gardens. Used with Permission.
  • Uploaded by Joy
Location: Athol, MA
Date: 2018-05-23
Second season, first bud.

Date: 2018-06-11
Location: Clinton, Michigan 49236
Date: 2018-05-31
"Paeonia 'Garden Treasure', 2018 photo, (3-SD-Y) Itoh Hybrid Peon
Location: Clinton, Michigan 49236
Date: 2018-05-31
"Paeonia 'Garden Treasure', 2018 photo, (3-SD-Y) Itoh Hybrid Peon
Location: My garden, zone 4 Wisconsin
Date: 2012-05-29
zone 4 Wisconsin
Location: My garden, zone 4 Wisconsin
Date: 2012-05-29
zone 4 Wisconsin
Location: My garden, zone 4 Wisconsin
Date: 2012-05-29
zone 4 Wisconsin
Location: My garden, zone 4 Wisconsin
Date: 2012-05-29
zone 4 Wisconsin

Date: 2017-06-19
Granby

Photo courtesy of Nate Bremer of Solaris Farms
  • Uploaded by Joy
Location: Longwood Gardens, Kennett Square, Pennsylvania, USA
Date: 2019-05-21
Location: Longwood Gardens, Kennett Square, Pennsylvania, USA
Date: 2019-05-21

Date: 2007-02-16
Courtesy Peony Paradise
  • Uploaded by vic
Location: my garden zone 7A Cape Cod, MA
Date: 2017-06-09
First year plant
Location: Clinton, Michigan 49236
Date: 2017-09-13
Location: Clinton, Michigan 49236
Date: 2017-09-13

Date: 2018-06-11
Location: my garden zone 7A Cape Cod, MA
Date: 2017-06-14
Late in day, closing a bit

Photo Courtesy of Nate Bremer at Solaris Farms. Used with Permiss
  • Uploaded by Joy
Location: Clinton, Michigan 49236
Date: 2018-05-31
"Paeonia 'Garden Treasure', 2018 photo, (3-SD-Y) Itoh Hybrid Peon
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Comments:
  • Posted by frankrichards16 (Clinton, Michigan - Zone 5b) on Apr 12, 2018 3:07 PM concerning plant:
    "Paeonia 'Garden Treasure', (3-SD-Y) Itoh Hybrid Peony, (Hollingsworth, 1984), USDA Hardiness Zone 4, Medium height, semi-double, yellow petals, muted red flares, side buds, lemon fragrance, no support needed, midseason bloomer, Michigan Bloom Month 5c-6.

    APS Gold Medal Award 1996. Award of Landscape Merit 2009. My first Itoh hybrid, planted in 2004. Still one of my favorites. An intersection cross of Paeonia lactiflora x P. (Lutea Hybrid) Alice Harding."
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