American Conifer Society
The American Conifer Society was founded in 1983, to help educate the world on conifer trees. The society is divided into four regions which all have their own boards and events. There is also a national board that produces the Conifer Quarterly and schedules the national meeting each year. The national meeting is rotated between the four regions.
To help spread their knowledge and ensure that conifers are enjoyed by all the society also partners with local gardens to help collect plant materials and build gardens. This type of work can be seen in the Conifer Garden at the Oregon Garden in Silverton, Oregon.
The society likes to pass on knowledge about conifers as well as discover new and exiting cultivars. This is done through programs like scholarships and grants. The Jean Iseli Memorial Grant provides 3,000 US Dollars to a public garden or arboretum that takes great measures to show dwarf or unusual conifers.
As part of the groups education purpose they have defined growth patterns for conifers around the world as follows:
|Growth Type||Yearly Growth||Growth at 10 years|
|Miniature||Less Than 1 Inch||1 foot|
|Dwarf||1 - 6 Inches||1 - 6 Feet|
|Intermediate||6 - 12 Inches||6 to 15 feet|
|Large||Greater than 12 inches||More than 15 feet|
The American Conifer Society has also defined a select group of gardens around the United States as reference gardens. To be considered a reference garden the gardens must follow the following standards:
- To provide conifer collections that will educate the public about growing conifers and demonstrate their uses in the landscape
- Introduce gardeners to new varieties of conifers that are appropriate to grow in their area
- Reference gardens will be open to the public and contain a minimum number of conifers
- Conifers will be accurately labeled and properly maintained 
The reference gardens are typically renovated existing gardens or brand new gardens that are built in conjunction with the American Conifer Society. Some of these gardens include the Oregon Garden, the University of Tennessee Botanical Gardens, the Wellesley College Botanic Gardens, and the JC Raulston Arboretum.
- "ACS History". American Conifer Society.
- "Knowledgebase record #94". Elisabeth C. Miller Library. Retrieved 10 February 2013.
- Pokorny, Kym (November 11, 2009). "Find a plethora of conifer ideas at The Oregon Garden". The Oregonian. Retrieved 10 February 2013.
- Eyre, Rich. "Captivating Conifers for the Landscape". American Nurseryman. Retrieved 10 February 2013.
- "Reference Gardens Program". American Conifer Society. Retrieved 10 February 2013.
- Bunting, Andrew. "Renovating a Conifer Garden". Retrieved 10 February 2013.
- Conifersociety.org official site