A single division of a newly released intersectional peony hybrid can sell for $1,000 or more, yet the global trade in these extraordinary flowers operates almost entirely out of public view. Behind closed doors at international flower shows and through decades-old personal relationships, a sophisticated network of breeders, licensed propagators, and obsessive collectors trades in cultivars that rival fine art in both price and scarcity. From the rain-soaked fields of the Netherlands to the hillside gardens of Hokkaido, Japan, this clandestine economy moves plants that represent centuries of selective breeding — and species that may face extinction within decades.
The Botanical Foundation of Value
The genus Paeonia contains approximately 33 species divided into two primary sections: herbaceous varieties that die back each winter and shrubby tree peonies that retain permanent woody structure. From these foundations, horticulturists have developed three categories that define the modern trade.
Herbaceous peonies, primarily derived from Paeonia lactiflora, serve as the backbone of the cut flower industry and the entry point for most gardeners. These plants are relatively easy to divide and propagate, keeping their prices accessible.
Tree peonies, known as botan in Japanese, produce some of the largest flowers in the temperate garden world — blooms exceeding 30 centimeters in diameter — with a color range extending into true purples, near-blacks, and luminous yellows. The rarest Japanese and Chinese tree peony cultivars, maintained in temple gardens and specialist collections, represent centuries of selection and are essentially irreplaceable.
Intersectional peonies, often called Itoh hybrids after Japanese breeder Toichi Itoh who achieved the first cross in 1948, combine the winter hardiness of herbaceous types with the extraordinary color range of tree peonies. Because these hybrids are sterile or nearly so, they can only be propagated vegetatively, creating permanent supply constraints that drive their premium pricing.
The Most Coveted Varieties
No cultivar has reshaped the peony market more dramatically than ‘Bartzella,’ an Itoh hybrid developed by Roger Anderson in 1986. Wholesale divisions changed hands at $150 to $300 each throughout the 1990s and early 2000s, with retail prices frequently exceeding $500 for a single bare-root plant. Even today, this lemon-scented yellow beauty remains the benchmark against which all newer introductions are measured.
Japanese tree peonies from the nineteenth and early twentieth centuries represent the trade’s antique market. Varieties such as ‘Kamada Nishiki’ with purple-lavender blooms and ‘Shima Nishiki’ — notable for striped petals controlled by a virus that complicates propagation — exist in very limited numbers outside Japan. These enter Western commerce through specialist importers who have cultivated relationships with nurseries like Yamaguchi Botan-en in Hokkaido or Kyoto-area producers, often requiring years of Japanese-language correspondence.
At the furthest frontier of exclusivity are species peonies — Paeonia rockii, P. ludlowii, P. mlokosewitschii (affectionately known as ‘Molly the Witch’), and P. cambessedesii. These plants have naturally restricted ranges, some protected under CITES, and require seven or more years to flower from seed. The trade in wild-collected specimens exists in a legal and ethical gray zone that reputable growers navigate with extreme care.
How the Trade Actually Works
The exclusive peony pipeline begins with breeders — often private individuals with decades of expertise and no commercial motive beyond the work itself. The most influential American breeders include Roy Klehm, Don Hollingsworth, David Reath, and Roger Anderson, whose Itoh introductions redefined what the genus could produce.
Breeders who develop genuinely novel cultivars face an immediate problem: protection. In the United States, Plant Patents offer twenty years of protection for asexually reproduced plants. The European Union’s Community Plant Variety Rights provide equivalent protection. But enforcement in the peony trade remains patchy — the nursery community is relationship-driven, and litigation is expensive.
Licensed propagators serve as the gatekeepers between breeders and consumers. A typical arrangement gives a propagator an initial block of material — perhaps 10 to 50 divisions of a highly anticipated introduction — in exchange for per-plant royalties. If a propagator receives 50 divisions of a new Itoh hybrid and each yields four saleable plants over two seasons, potential revenue reaches $30,000 to $60,000 from a single introduction before growing costs.
The most prominent American licensed propagators include:
- Peony’s Envy (New Jersey)
- Adelman Peony Gardens (Oregon)
- Hollingsworth Peonies (Missouri)
- New Peony Farm (Minnesota)
European specialists include:
- Claire Austin Hardy Plants (UK)
- Kelways Nursery (UK, established 1851)
- Van der Breggen Peonies (Netherlands)
- Ammerlaan Plant (Netherlands)
Personal Relationships as Currency
The most exclusive growers operate primarily through personal relationships built over decades. No catalogue lists these varieties. No website accepts orders for them. The mechanism resembles the rare book trade or studio pottery — a grower who demonstrates seriousness of purpose and reciprocal rarity to offer gradually gains inclusion in exchanges invisible to the broader public.
Major public gardens including Kew Gardens in London, the Royal Botanic Garden Edinburgh, and the Beijing Botanical Garden maintain living collections with varieties held nowhere else. These institutions occasionally share surplus material with specialist nurseries through formal exchange agreements, providing a legitimate pipeline for otherwise unobtainable plants.
The Chelsea Flower Show in London and specialist peony shows organized by national societies function as trading floors. Conversations that occur hours before public opening are where significant transactions happen. The show circuit — Chelsea in late May, the American Peony Society national show in June, then the Hokkaido Peony Festival — provides the annual rhythm around which the exclusive trade organizes itself.
The Economics of Exclusivity
New Itoh hybrid introductions from major American breeders currently retail at $75 to $300 per bare-root division, with first-year stock selling at premium prices. Japanese tree peonies command $80 to $500 or more for grafted specimens, depending on cultivar rarity and provenance documentation. Rare species peonies retail at $40 to $120 for seedling-raised plants, reflecting the seven-to-ten-year growing period before first flower.
A genuine secondary market operates through society exchanges, specialist Facebook groups, and occasional eBay listings. This market carries significant risks: mislabeling is common, plant health cannot be verified, and provenance claims are often impossible to substantiate. The only reliable protection is purchasing from nurseries with documented track records and photographs of named clones.
Counterfeiting remains a persistent problem. The most commercially desirable varieties — ‘Bartzella,’ ‘Cora Louise,’ ‘Garden Treasure,’ ‘Hillary’ — are routinely offered under their names by nurseries selling unrelated cultivars. Molecular identification using DNA fingerprinting is increasingly available, though reference databases remain incomplete.
Forces Shaping the Future
Climate change is altering the geography of peony production. Regions historically too warm for reliable cultivation — parts of southern Europe and the American South — remain excluded from the premium herbaceous market, which requires cold winters for proper dormancy. Traditional growing regions in the American Midwest and northern Europe face compressed flowering seasons and increased frost risk. Breeders are beginning to prioritize heat tolerance and extended chilling flexibility.
Chinese breeding programs represent perhaps the most significant emerging force. Decades of state-funded research have produced cultivars combining traditional Chinese aesthetic preferences with modern horticultural performance. As these varieties enter international commerce, they are likely to disrupt a trade dominated for a century by American, Dutch, and Japanese producers.
The conservation imperative is growing. Several wild peony species face genuine extinction pressure from habitat loss and collection. The most responsible sector of the trade increasingly emphasizes provenance and engages with conservation organizations.
A Trade Built on Trust and Time
The exclusive peony trade remains, at its core, a network of trust sustained over decades by people who care about these plants more than the money they might extract. The greatest breeders spent lifetimes working without certainty that their introductions would achieve commercial significance. The most respected collectors maintain varieties that may never have monetary value but represent irreplaceable living heritage. Entry into this world is slow and earned — requiring demonstrated expertise, proper growing conditions, willingness to contribute as well as acquire, and patience measured in years rather than seasons.
For those who persist, the reward is access to some of the most extraordinary plants that human artistry and botanical diversity have combined to produce — flowers cultivated and loved, in some cases, for a thousand years.