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Poe, Kitt Farrell, "I Know What A Green Thumb Is, What Is A Blue Thumb?" (2002). All Archived Publications. Paper 294.
Exact publication date is unknown but is estimated to have been in 2002. electronic publishing Warning: The bulletins in these series may be obsolete and potentially dangerous. The are presented here for historical purposes only. For the most up to date information, please visit the USU Extension website.