The buttonwood is said to harmonize well in a North-facing direction. This is linked to Feng Shui Water Element — North being its representative and the buttonwood flourishing in seaside areas. However, let it be known that Feng Shui interpretations vary widely and individual experiences may differ.

In the realm of Feng Shui, the american wisteria plant is considered to harmonize favorably with a West-facing layout. This is largely due to its purple-hued blossoms, a color traditionally associated with the Metal Element that corresponds with the West. However, individual experiences may vary, embodying the flexible essence of Feng Shui.

The narrowleaf willow provides a balance of energy, making it harmonious with Feng Shui principles. Its flexible branches symbolize resilience, particularly apt for a West-facing space, where metal elements dominate and call for adaptability. However, interpretations might vary based on individual experiences and other factors.

The cutleaf evergreen blackberry is generally perceived to have a harmonious relationship with the East, given the Feng Shui belief that plants with thorny attributes favor the Eastern element Wood. Its resilient nature enhances Qi flow, adding vitality and dynamism to the surroundings. However, individual interpretations may vary due to the subjective nature of Feng Shui.

The palay rubbervine is considered a reasonable choice in Feng Shui practices. Traditionally, it is thought to promote prosperity when placed in the North. The plant's robust growth symbolically embodies the concept of advancement and career progression, aligning with the water element as associated with the Northern direction in Feng Shui. However, interpretations may vary within different schools of Feng Shui.

The st. Bernard's lily is considered favorably compatible in Feng Shui, particularly when placed in the East. The graced natural flow of its lengthy stems, mimicking rising sun rays, harmonizes with the East’s element – wood, symbolizing growth and fresh beginnings. However, Feng Shui, being a complex and personalized study, interpretations may vary.

The vibrant giant red Indian paintbrush aligns well with the energetic chi flow of the Southern direction, typically a symbol of recognition and fame in Feng Shui. Harmony arises from the red color of the plant, believed to boost the Fire element in this particular area. However, interpretations can vary.

A beautiful and delicate choice, slender leaved ice plant flatters spaces with its gentle, versatile nature. According to Feng Shui principles, a West-facing position may bode well for this plant. This is since the Western direction relates to joy, celebration and family aspects, subtly amplified by slender leaved ice plant's inherent vitality and effervescence. A fascinating discussion can surround this topic, bringing delightful ambiguity to remember – a plant’s impact is as much about your personal connection as any ancient wisdom.