This is the 9717th most frequent Japanese word.
草花
Ornamental plants; flowers and grass.
Here, "草花" (kusabana) refers to plants, typically herbaceous plants and flowers, in a general sense, emphasizing the variety and presence in a specific location, which is the garden.
庭にはさまざまな草花が咲いています。
Various herbs and flowers are blooming in the garden.
In this usage, "草花" denotes a personal preference for herbaceous plants and flowers, generally as a hobby or interest.
草花が好きなので、毎週花屋に行きます。
I like herbs and flowers, so I go to the flower shop every week.
Here, "草花" indicates the subject of expertise, specifically plants and flowers, suggesting knowledge in botany or gardening.