author
A Colorado-based horticultural society best remembered for publishing The Green Thumb, it helped share practical gardening and forestry knowledge with readers in the mid-20th century.

by Colorado Forestry and Horticultural Association
The Colorado Forestry and Horticultural Association appears in library and ebook records as a corporate author rather than an individual writer. It is credited with publishing The Green Thumb, a Colorado gardening magazine that circulated in the 1940s and later decades, with holdings cataloged by the Biodiversity Heritage Library and digitized editions listed by Project Gutenberg.
Because the surviving records are mainly bibliographic, not biographical, only a limited picture is easy to confirm. What does come through clearly is the association's role in promoting horticulture, gardening, and forestry information for Colorado readers through a long-running periodical.
For an audiobook-style author note, the most accurate way to think of this name is as the publishing organization behind the work rather than a single personal author.