Rowell surveys a broad range of ornamental flowering shrubs—native species such as grevilleas, callistemons, and leptospermums, alongside well‑adapted exotics like camellias, azaleas, hibiscus, and hydrangeas. He explains their growth habits, soil and climate preferences, flowering seasons, and landscape uses, with an emphasis on choosing shrubs for colour, form, fragrance, screening, and seasonal interest. Practical guidance on planting, pruning, watering, and long‑term garden planning makes the book a reliable, accessible resource for gardeners and landscapers seeking shrubs that thrive in Australian environments.