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Growth, Partitioning, and Nutrient and Carbohydrate Concentration of Petunia x hybrida Vilm. are Influenced by Altering Light, CO2, and Fertility (2011) [Summary][Full Paper]
Boron Distribution and the Effect of Lime on Boron Uptake by Pansy, Petunia and Gerbera Plants (2011) [Summary][Full Paper]
Characterization of Calcium and Boron Deficiency and the Effects of Temporal Disruption of Calcium and Boron Supply on Pansy, Petunia, and Gerbera Plugs (2009) [Summary][Full Paper]
*Petunie am Balkon (middle picture) taken by Robert Paprstein, courtesy of Wikipedia Commons