The prickly pear subtly embraces Feng Shui principles. Its thorns symbolize protection, warding off negative energy, while its lush fruit represents prosperity. Positions favoring the Northeast direction harness the Earth elements, promoting stability and nourishment in connections; much akin to how prickly pear thrives in these directions. However, individual experiences may vary, pay heed to personal harmony when placing.

White rattlesnakeroot could resonate well with the energy in a Southwest facing location. This is due to the commonly held Feng Shui belief that the delicate, white color of the plant symbolizes purity and clarity, values often associated with this direction. It should, however, be noted that interpretations of Feng Shui principles can vary.

The clubed begonia exudes an aura of tranquility and serenity, elevating the harmony of one's living environment in Feng Shui. Its association with the Northeast direction involves the Earth element, which according to Feng Shui principles, symbolizes stability, nurturance, and protections. Please bear in mind the subjective nature of Feng Shui interpretations.

The soft shield fern is considered harmonious with a North-facing placement. In Feng Shui practice, the North is linked with career growth and success. With its graceful, cascading fronds, the soft shield fern can symbolize a steady flow of opportunities. It can thus contribute to an auspicious energy flow, but variations will exist due to the subjective nature of Feng Shui.

The grass-leaved goldenrod plant subtly complements the southern-oriented spaces, primarily due to its sturdy nature and golden tones. This blends well with the South's energetic and dynamic Feng Shui connotations. However, it's essential to remember that success hinges upon the right balance and thoughtful placement in accordance with one's needs, energy, and space.

The mountain grass is harmonious with the eastern direction due to its properties that correspond well with the wood element. This association cultivates stability and growth, true to the energies of the East. However, the interpretive nature of Feng Shui allows for varying personal perspectives.

The nun's-hood orchid exudes an aura of tranquility and balance, making it particularly compatible with the North facing direction. In Feng Shui, North signifies water and career growth, which resonates well with the nun's-hood orchid's symbolism of spiritual growth and perseverance. This compatibility, however, can vary as Feng Shui is highly subjective and dependent on an array of variables.

The variegated Green Pinwheel Plant harmonizes well with the southwest direction due to its variegated foliage creating a balance of Yin (dark) and Yang (light), essential to Feng Shui practice. As southwest signifies love and relationship in Feng Shui, variegated Green Pinwheel Plant's enticing appearance may subtly influence this aspect. However, everyone's energy field differs, meaning results are unique.