The International Association of Horticultural Producers (AIPH / IAHP) is an international organization dedicated to promoting horticultural producers and held the international garden / flora festivals or expositions.

AIPH aims to put flower, plant and landscaping services on a global agenda, with a vision to:

  • Stimulate increased demand for ornamental trees, plants and flowers worldwide.
  • Protect and promote the interests of the industry.
  • Be an international hub for industry information and knowledge exchange.
  • Lead best practice in ornamentals production


In 1948, amid strained relationships following the end of the Second World War, a group of representatives from the national grower associations of Western Europe came together in Zurich to form the Association Internationale des Producteurs de l’Horticulture (AIPH).


At least 4 events were held including the 1999 World Horticultural Exposition in Kunming, China and Expo '90 in Osaka, Japan.[1]


15 events were held in the 2000s including Floriade 2002 in Haarlemmermeer, Netherlands and an exhibition in Shenyang, China in 2006


Taipei 2010/2011

The 2010 Taipei International Gardening and Horticulture Exposition was held in Taiwan from 6 November 2010 to 25 April 2011 hosted by the Taipei City Government and the Taiwan Floriculture Development Association (TFDA). This was an A2/B1 classification event[2]

Venlo 2012

In 2012 the Floriade 2012 was held in Venlo. As with other Floriades this was an A1 classification event.[2]

Suncheon 2013

Suncheon Bay Garden Expo 2013 is a A2/B1 classified international horticultural exposition held in Suncheon, South Korea, from 20 April to 20 October, attracted over 4.4 million visitors. [3]

Taichung 2018/2019

Taichung World Flora Exposition is being held in Taichung between 3 November 2018 and 24 April 2019. This is a category A2|B1 event.[4]


AIPH has been approving and regulating International Horticultural Expos, with its partners BIE (, since 1960.

AIPH recognises five different categories of Horticultural Exhibitions, with the following table summarising the main differences between each of them.

Categories Official Name Duration Minimum Exhibition Area Application
A1 Large International Horticultural Exhibitions 3 – 6 months 50 Ha 2 – 6 years before(BIE recognition required)
A2 International Horticultural Exhibitions– Short Duration 8 – 20 days 15,000 m2 More than 4 years before
B1 Horticultural Exhibitions with International Participation – Long Duration 3 – 6 months 25 Ha 7 – 3 years before
B2 Horticultural Exhibitions with International Participation – Short Duration 8 – 20 days 6,000 m2 More than 2 years before
A2/B1 Horticultural Exhibition with International Participation – Long Duration 3 – 6 months 25 Ha 7 – 3 years before

This calendar shows both the approved exhibitions and those applied for

Membership and Committees

A list of AIPH members can be found here

Australia Belgium Canada China Czech Republic
Denmark Germany Hungary Indonesia
Italy Japan P.R.China Malaysia Netherlands
Rep. Korea Switzerland Spain Republic of China Thailand
Turkey United Kingdom Brazil Canada USA

All members have the right to sit on a Committee. The Standing Committees include:

  • Green City
  • Marketing and Exhibitions
  • Novelty Protection
  • Environment and Plant Health

Other active groups include:

  • Statistics
  • Science and Education


AIPH maintains relations with other organisations in the field, including the Community Plant Variety Office (CPVO) of the EU and Ciopora, the International Association of Plants Breeders. In line with the International Union for the Protection of New Varieties of Plants (UPOV) – convention 1991, AIPH lobbies to maintain the rights of growers and to resist legislation that would reduce innovation in the sector.[5]


  1. Exhibitions, history Archived 15 October 2011 at the Wayback Machine. Retrieved 8 January 2010.
  2. "AIPH | Exhibitions, history". Archived from the original on 15 October 2011. Retrieved 27 November 2013.
  3. "Suncheon Bay Garden". koreatimes. Retrieved 2015-10-17.
  4. "International Horticultural Exhibitions - International Association of Horticultural Producers". Retrieved 19 February 2019.
  5. "Novelty Protection - International Association of Horticultural Producers". Retrieved 26 February 2019.
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