United States Department of Transportation
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Comparing persistence and fecundity of Florida-ecotype and non-Florida-ecotype wildflowers
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2017-04-01
[PDF-940.98 KB]
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Abstract:Wildflower plantings by Florida DOT have long shown inconsistency in establishment from one site to the next. One theory for this was that the wildflower seed was predominantly purchased from the western plains states, thus not well adapted to the sub-tropical climate of Florida. An effort was initiated to select hardy plants that were adapted to FL conditions and call them “Florida-ecotype” or “Florida grown” seed. However, Florida grown seed are more expensive to purchase and often more difficult to procure. Therefore, it was later questioned if Florida grown seed are essential for new wildflower plants. Therefore, experiments were established in the fall of 2014 at Citra and Ona FL to test golden tickseed and partridge pea that were procured as both Florida grown and from western retailers. Regardless of seed origin, establishment was low and rather inconsistent. Even in plots where establishment did occur, partridge pea failed to produce viable seed in either location. Though golden tickseed did produce seed, germination was less than 40% for either seed source. In 2016, recruitment of new plants was almost non-existent for either species. By spring 2017, no new seedlings were observed in any site at either location. Because of the failure of the Florida grown and western grown seed, it is difficult to determine if either source is superior, or different in any way from the other.
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