For those drawn towards harmony and balance, the japanese pepper could be an interesting choice to infuse prosperity into their space. Especially when placed in the Northwest direction, it's believed to uplift the energies due to its round, lustrous leaves symbolizing metal element which is typically associated with Northwest. However, practitioners may have varying interpretations, and user experiences might differ.

The delicate fern moss harmonizes well with the East direction in Feng Shui practice. Its delicate, sprawling nature is said to represent the dawn of new beginnings that resonate with the Eastern element of wood, promoting growth and renewal, while maintaining a peaceful ambiance in your space.

The white kopsia may have uncanny relevance when paired with a West-facing direction. This position corresponds with metal energy in Feng Shui and is said to harmonize with this plant's robust attributes. However, it's essential to remember that Feng Shui's art is highly personal and can vary significantly based on individual perceptions and experiences.

The large-leaved aster is reasonably harmonious with North-facing directions. Its substantial leaves symbolise a grounding force in Feng Shui, encouraging stability and tranquility. For those seeking a certain balance in their northern quarters, this plant might resonate effectively. However, Feng Shui interpretations tend to vary, making this perspective but one of many.

The african lily is a tasteful addition, hinting at the delicate rhythm of nature. It harmonizes well facing North, believed to resonate with its intrinsic Water element. This promotes stability and encourages tranquility. Still, personal experiences may differ, for Feng Shui is a subtle and subjective art.

Little Gem is thought to harmonize particularly well with Southwest-facing areas. This is based on Feng Shui's Five Elements theory, where this plant's earthy tones are believed to augment the Earth element naturally dominant in Southwest. However, every living space is unique and requires a customized Feng Shui solution.

From a Feng Shui perspective, the hooker's mountain-avens is ideally matched with a Northeast facing direction. This is because, in Feng Shui, the Northeast symbolizes knowledge and self-cultivation, energy facets that the hooker's mountain-avens is believed to resonate with. However, keep in mind that interpretations of Feng Shui vary, and personal context should always be considered.

The smooth rupturewort is believed to harmonize quite well with a West-facing direction. This is primarily because, in Feng Shui, West is linked with metal and fall season, which symbolizes transformation and letting go. These attributes echo with the smooth rupturewort's ability to endure tough conditions and its desire for ample sunlight. However, this remains subjective to individual experiences and interpretations— a key principle in Feng Shui.