SJ has zero knowledge of biology and botany. I guess it wasn't required subjects in her education. I'm afraid Dan doesn't know much about plants either. He's good at cleaning up, making planting beds, digging ditches, but he's no plant man! On their spending spree at the garden shop, they blindly bought fruit trees, which are generally quite expensive, without doing any research. Perhaps this was Dan being passive agressive and wanting SJ to waste her money. Most of the trees they bought need to be cross pollinated with another variety of the same species. Unless there are those trees already around, they won't get fruit. I know they don't have any other almond trees nearby and they only bought one. SJ knows nothing about animal care. Her idol, Marie Antoinette, liked to play dress-up as milkmaid and frolic around and play farm girl just like SJ.