False aloe harmonizes with the Southwest direction, an area symbolizing earth elements and relationships in Feng Shui. Its sturdy, natural growth resembles strength, fortifying the earth element, while its sharp edges dispel negative energies. This, however, is an interpretation derived from common Feng Shui principles and might not resonate with everyone's unique understanding or practice.

Snow-on-the-mountain harmonizes well with Southern facing locations, owing to its illustrious white blooms that represent purity and integrity in Feng Shui. This said, it's crucial to understand that the plant's compatibility might change nuancedly upon personal energies and varying environments.

Showy medinilla tends to align with the principles of Feng Shui especially when placed in the South direction. The reflected prosperity in its bright pink flowers mirrors the Fire element of South, creating an atmosphere of positive energy. Bear in mind, the interpretation of Feng Shui varies across individuals with different perspectives.

Tiger's jaw is well-received in Feng Shui due to its striking appearance symbolising protection. It is believed to enhance the energy flow of a space when placed correctly. Particularly, tiger's jaw has a pleasant synergy with the southern direction. This is attributed to the South's association with the elements of fire and recognition in Feng Shui. Tiger's jaw, with its spiked leaf formation, is visually reminiscent of flames and can therefore support these energies. Please be aware, Feng Shui interpretations can vary and this suggestion does not guarantee specific results.

The sericea lespedeza is generally compatible with East-facing settings, being associated with growth and new beginnings in Feng Shui principles, much like the rising sun. However, the arrangement and health of the plant still play crucial roles in manifesting positive energy, thus making its compatibility somewhat subjective and dependent on individual perceptions.

The leatherleaf mahonia aligns well with the Feng Shui element of wood due to its lush, evergreen nature. When placed in a Northern-facing direction, it is thought to promote personal growth and the ability to overcome adversities. This is based on Feng Shui's association of North with personal journey and the water element, a nurturing force for wood plants.

The redflower ragleaf aligns amicably with the Southern direction. This plant radiates with vibrant fire energy, synonymous with the South, fostering abundance and vitality. Nevertheless, interpretations of Feng Shui vary, making this connection somewhat subjective.

The crossberry is said to balance Yin and Yang energies, which could make it suitable for various environments. Especially for Southern-facing areas, this plant might thrive, perhaps due to its affinity with the element of Fire. Yet, as the principles of Feng Shui are deeply personal, the plant's compatibility may vary based on individual perception.