Being of a lustrous golden hue, the lily leek manifests the element of Metal and Earth in Feng Shui, implying strength and stability. Positioned appropriately, it could enhance personal growth. Facing South, however, its energy may be slightly diluted due to the fiery energy of South, typically representing the Fire element in Feng Shui. The interplay of elements, in this case, indeed warrants caution and mindfulness.

According to Feng Shui principles, the baseball plant is thought to embody strong grounding and stability, a reflection of its round form and growing pattern. Ideal for Northeast-facing locations, where Earth element is perceived as dominant. This earthy plant could serve as a tranquil companion, fostering balance and harmony while enhancing the vital connection with nature. However, interpretations may vary and should always complement one's personal energy and intuitions.

Darwin's barberry has a moderate Feng Shui compatibility. Aligning this plant to the West stimulates its energy thanks to the associated element of metal, enhancing harmony. However, given Feng Shui's multifaceted nature, results may differ based on individual perceptions and environments.

The lety's sedeveria embodies the principles of wood and earth, anchoring your space with serene energies to revitalize or strengthen relationships. Facing South, this plant invites prosperity and success, due to a connection to the fire element, which is nurtured by wood and earth. However, this interpretation is open-ended and varies across different Feng Shui practices.

The mexican honeysuckle is moderately compatible with Feng Shui principles. It's resonance with the East directional energy has been observed, likely because of its strong, vibrant colors which denote the wood element. Remember, though, one's personal Chi plays a critical role in determining plant compatibility.

The gray alder embodies a resilient spirit and strong connections to nature. Its compatibility with Eastern exposure is explored from quite interesting Feng Shui perspectives. This direction is associated with family and health, symbolizing the rejuvenating quality that gray alder is believed to carry. However, as Feng Shui can be deeply personal, please interpret this advice according to your innermost feelings and life compass.

Green milkweed, owing to its vibrant green hues, is often associated with rejuvenation and vitality. As per Feng Shui, it harmonizes well with an East-facing setting, as the Eastern direction, symbolizing growth and new beginnings, heightens the plant's inherent vivifying energy. Yet, nuances in personal Feng Shui sets might cause differing interpretations.

The Feng Shui of the cashew is enigmatic, heavily steeped in the balance between yin and yang. Orienting it towards East unravels its potential as per Feng Shui, symbolising renewal and rejuvenation, mirroring the Eastern sunrise. However, the subjective nuances of Feng Shui remind us that interpretations may vary and should be applied wisely.