The small-leaved cotoneaster possesses traits appreciated in Feng Shui. Its small, grouped leaves symbolize community and stability, having positive energy. Favorably aligned with the East, the direction representing family and health, it potentially fortifies these aspects. Please remember, interpretations of Feng Shui may vary and this advice should be adapted to suit personal circumstances.

The deutzia rubens plant aligns well with the Northwest direction in Feng Shui principles. The Northwest is governed by the element of Metal, and this area in homes or offices is related to father figures, mentors, and travel. As deutzia rubens's soft pink and white blossoms have a grounding and calming effect, they can harmonize with the energies of mentorship and exploration typically associated with the Northwest.

The tufted hairgrass plant embodies symbolic relevance in Feng Shui, particularly when incorporated in North-facing rooms. Its sturdy growth, a representation of steadfast career progression, harmonizes neatly with the North, traditionally a catalyst for professional achievements. This compatibility, however, exists largely in interpretation and may be experienced uniquely according to personal energy flow and environmental factors.

The western blue-eyed grass carries a tranquil energy that promotes peace and optimism. Being a symbol of stability and resilience, this plant resonates harmoniously with the East direction, traditionally associated with health and family in Feng Shui. Its blue flowers, evoking the Water element, can enhance the wood element of the East, fostering growth and renewal. However, individual interpretations may vary.

While the yellow foxglove is known for its vibrant colors, its compatibility with Feng Shui, particularly when facing South, is somewhat uncertain due to its associated elements. Its tall, predominantly yellow form may promote active energy (Yang), fitting with South's Fire element. But, as Feng Shui is a highly subjective discipline, individual interpretations may shape ultimate compatibility view.

The aspen Fleabane plant, due to its robust and adaptable nature, thrives well in Southwest-facing spaces - an expression of Feng Shui's Earth element. The delicate balance of its flowering mechanism coheres finely with the nourishing and stabilizing aspects of the Earth element. However, placement and usage should be done with personal discretion as reactions can always deviate due to different spatial conditions and personal energies.

Schreber's watershield exemplifies a harmonious blend of water and earth elements, suggesting a calming influence. Its auspicious compatibility with a North-facing placement can be attributed to North symbolizing water in Feng Shui, complementing schreber's watershield's aquatic nature. However, as Feng Shui interpretation can be individual-specific, personal preference and specific circumstances should take precedence.

The blue marble tree is generally appreciated in Feng Shui for its robust vitality. Placing it towards the North could harmonize the flow of Chi, considering North is traditionally linked to the water element, promoting wealth and career success. However, adaptability may vary due to its unique energy.