The International Association of Horticultural Producers (AIPH / IAHP) is a trade association 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:
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
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]
In 2012 the Floriade 2012 was held in Venlo. As with other Floriades this was an A1 classification event.
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 World Flora Exposition is being held in Taichung between 3 November 2018 and 24 April 2019. This is a category A2|B1 event.[4]
Floriade 2022 will be held between 14 April and 9 October 2022 in Almere with focus on the role of horticulture in city building.[5]
The AIPH has been formerly headquartered in Theale, but since 2016 is now at the headquarters of the Horticultural Trades Association (HTA) in Oxfordshire.
AIPH has been approving and regulating International Horticultural Expos, with its partners BIE (www.bie-paris.org), since 1960.
AIPH recognises four different categories of Horticultural Exhibitions, with the following table summarising the main differences between each of them.[6]
| Categories | Official Name | Duration | Minimum Exhibition Area | Application | |
|---|---|---|---|---|---|
| A1 | World Horticultural Exhibitions | 3 – 6 months | 50 Ha | 12 – 6 years before(BIE recognition required) | |
| B | International Horticultural Exhibitions | 3 – 6 months | 25 Ha | 10 – 3 years before | |
| C | International Horticultural Shows | 4 – 20 days | 6,000 m2 | 5 – 0.5 years before | |
| D | International Horticultural Trade Exhibitions | 5 – 0.5 years before |
This calendar shows both the approved exhibitions and those applied for http://aiph.org/current-events/
A list of AIPH members can be found here http://aiph.org/members/aiph-member-organisations/
 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 |
Other active groups include:
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.[8]