The living stone is a formidable choice for harmonious Feng Shui. Its rooted nature may invite stability and ground energy, complementing a West-facing direction associated with overall well-being and contentment. Remember though, the concept of Feng Shui can be profoundly personal, which advises exercising personal judgment along with these suggestions.

The bog bulrush exudes a humble, nurturing energy synonymous with Feng Shui philosophy. Its compatibility with the East radiates particularly in the mornings, as it symbolizes renewal akin to a sunrise. Although interpretations vary in Feng Shui, the bog bulrush may enhance the Wood element, bringing equilibrium and prosperity to your personal space while respecting the fluidity of natural energies.

The sweet giant bamboo meshes harmoniously with the Southeast direction due to its inherent connection to Wood, the Feng Shui element that governs the Southeast. This compatibility suggests an energy flow inviting vitality and growth. However, remember, Feng Shui is multidimensional and, at times, can be subject to personal interpretation.

The showy Penstemon plant represents an intriguing element in Feng Shui practice due to its flamboyant character, which is in harmony with the vivacious energy of the Southwest direction. This connection is due to both the plant and this direction being associated with love and relationships, but remember, these interpretations can substantially vary.

Shaw's agave complements a Northwest facing area harmoniously. Since Northwest symbolizes aspects of helpful people and travel in Feng Shui, the hardy nature of shaw's agave subtly echoes resilience, favoring those on a journey or seeking support. However, as Feng Shui interpretations vary greatly, this positioning may have different implications for different individuals.

Primarily, green and gold can effortlessly blend into any space, hence pleasing the Feng Shui energy flow. The blend of its colors naturally lean toward the Southwest direction - a direction synonymous with love and relationships in Feng Shui. Consequently, its presence may subtly promote harmonious energies in those areas. However, as Feng Shui theories vary in individual interpretation, adaptability remains pivotal.

In terms of Feng Shui compatibility, the purple mountain saxifrage presents an intriguing dynamic. Being an alpine intricacy, it embodies resilient energy, fortifying the Eastern-facing sector associated with Health and Family. Its purple hues are subtly powerful, augmenting wood energy while maintaining a harmonious course within the complex Feng Shui spectrum, thereby inviting vitality and cohesion. However, its compatibility remains layered, demanding personalized interpretation.

The maryland Golden Aster is harmonious with South-facing environments. This aligns with Feng Shui principles due to its vibrant, golden flowers, symbolizing 'Fire' element, which is dominant in the South. However, interpretation varies, thus personal perceptions and environment should also be taken into consideration.