There are several types of line in an arrangement. Lines can express different moods and feelings just by the direction they are placed. Line provides a pathway for the eye to follow throughout the arrangement. The three main types of line are actual line, implied line, and psychic line.
My parents house was a traditional home that had the typical Japanese garden in the back with various different trees, plants and many seasonal flowers. I grew up playing around our Japanese black pine, Japanese plum, loquat (Eriobotrya japonica) and pomegranate trees, all the while enjoying the azaleas, camellias and many other flowers that my father nurtured with so much love and dedication. I also remember that we had flowers that were originally introduced in Japan from foreign countries, such as Amaryllis (Belladonna Lily), roses, daisies, and dahlias. So while our garden was very Japanese in style, I can now see how it was more like a display of universal nature.