Included in the package there is a set of pre-loaded maps created from previously published plant images that can be directly inserted into a ggplot coding workflow (Table 1, Figure 2). ggPlantmap enables users to plot heatmap signatures of gene expression or any other spatial quantitative data onto plant images providing a customizable and extensible platform for visualizing and analyzing spatial quantitative patterns within specific plant regions (Figure 1). This package uses the flexibility of the well-known ggplot2 R package (Wickham, 2011) to allow users to tailor maps to their specific research questions.