PLANT LAYERING is a good planting technique (not to be confused with root layering) to consider when planting beds, borders, and gardens.
This is the practice of planting material of different heights from low to high and from front to back in the planting area. Plant layering adds depth and interest and can include ground covers, small, medium and tall plants, and even the tree canopy as the final layer.
Annuals, perennials, shrubs and trees can all be planted using this layering technique.
Mixing the heights a bit and staggering the lines of planting produces a more natural look to the finished planting!