The fragrant fringecup harmonizes exceptionally with East-facing spaces, a direction known to herald family well-being and health in Feng Shui. Its vigorous yet balanced growth resonates with the Wood element, commonly associated with the East. Its delicate scent further enhances the peaceful ambiance. However, this does not devalue its potential in other directions or settings, as Feng Shui always leaves room for personal interpretations and house dynamics.

The desert false indigo upholds ambiguous compatibility in Feng Shui due to its distinctive structure and the ability to thrive in harsh environments. It subtly symbolizes austerity and resilience. When placed with North facing, it can be said to enhance the attribute of career growth, drawing upon the element of 'Water' associated with the North. However, interpretations may vary, reflecting the inherent nuances of Feng Shui.

The white wild indigo is often associated with purity and new beginnings due to its white blooms. When placed in the Northwest, it may strengthen relationships as this direction is linked with helpful people and travel. However, the plant's strong energy could interrupt the subtle forces, suggesting a balanced approach and moderate use.

The weeping bottlebrush is subtly compatible within the Feng Shui principles, particularly when positioned facing Northeast. A hint at this compatibility arises from the plant's enduring resilience, reflecting the element of Earth associated with this direction. However, interpretations do vary within the wide scope of Feng Shui practice.

The baybean displays a harmonious relationship with the Eastern sector. As per Feng Shui practices, East signifies health and family, symbolizing sunrise or beginnings. The baybean's ability to thrive in sunlight while maintaining a robust nature reflects this symbolism, suggesting strong compatibility. However, individual experiences may vary, emphasizing the interpretation's relative nature.

The sisal displays promising Feng Shui compatibility, particularly when positioned facing West. This direction is associated with joy, creativity and children in Feng Shui, and the sisal's robust vitality can potentially enhance these qualities. However, Feng Shui is highly subjective and individual interpretations may vary.

In Feng Shui, the sweet birch plant bodes well when placed towards the Northwest. This direction is linked with mental energy, and this green beauty, with its delicate, pendulous branches, subtly influences the flow of such energies, leading to increased clarity and focus. However, perception varies and this may invoke different sentiments for different individuals.

The burnet rose plant lends itself to the telling complexities of Feng Shui practice. Seeming to harmonize well with a North-facing direction, the hardiness of burnet rose is seen as a reflection of the unyielding aspects of the Water element traditionally linked with North. However, your individual interpretation and context are essential too.