The perfoliate alexanders exhibits an admirable harmony when placed in the East facing direction. According to Feng Shui, this direction is associated with the Wood element, which is favorably stimulated by the plant's vibrant energy and perfoliate structure. However, the dynamics of Feng Shui vary, and individual interpretations may differ.

The annual clary signifies a sense of freshness and clarity in Feng Shui. It can potentially help re-align energy flows when placed in South-facing areas. This is often associated with the robust 'Fire' element in Feng Shui, lending equilibrium to the area. Remember, Feng Shui gifts us with guidelines rather than strict rules, so personal interpretations may vary.

The ironweed exudes a robust energy that might harmonize well in a southern facing direction. As South is traditionally associated with the element of fire in Feng Shui, the hardy nature of ironweed may symbolically temper this, lending a grounded, balanced quality to the environment.

Hooker's evening primrose has a striking nature that aligns with the dynamic vigor of the Southern direction in Feng Shui. Its radiant blooms and resilient spirit could be seen as channelizing the South’s vibrant, lively energies, promoting balance. However, interpretations in Feng Shui can vary thus, personal preference and intuitive feel for the space are also important.

Fairy Duster exhibits an intriguing affinity with the Southeast direction, a placement theoretically enhancing prosperity and wealth. This association derives from the plant’s lush green shade, harmonious with Wood elements dominant in the Southeast. Still, perceptions of Feng Shui vary greatly, underscoring the need for personalized consultation.

The wild senna plant fosters stability and balance, making it compatible with the principles of Feng Shui. Positioned towards the East, which symbolizes health, growth and family in Feng Shui, the wild senna assists in energizing these aspects of life. However, every plant could affect energies distinctly in each space due to different factors, emphasizing the nuanced nature of Feng Shui.

The marsh-mallow exhibits substantial Feng Shui potential, particularly when placed in a west-facing location. It is believed the plant's soothing and healing attributes complement the Metal element predominant in the West, thus promoting harmony and balance. Please consider personal experiences and instincts when applying these principles.

The brasilicactus haselbergii is usually seen as a beneficial addition to spaces that face Northeast. This direction is associated with spiritual growth and inner knowledge in Feng Shui, characteristics that mirror this cactus' symbolism of endurance, strength and survival. The exact patterns of energy a brasilicactus haselbergii might influence are rightly considered subjective and open to personal interpretation.