The giant bellflower resonates well with the East-facing direction, signifying growth and developmental prosperity. This is largely due to the plant's vibrant bloom and broad leaves symbolizing rejuvenation and expansiveness, elements associated with the Wood Element in Feng Shui. However, the exact impact may differ based on subjective interpretations.

The silver Dollar Plant aligns well with Feng Shui principles considering its round leaves, signifying completeness and unity, highly favorable for harmony. It is harmonious with a West-facing direction, typically associated with joy and one's children in Feng Shui, mirroring this plant's capacity to foster growth and happiness. Remember, Feng Shui interpretations can vary, and personally resonating with a plant may hold more value to some practitioners.

The mountain azalea aligns harmoniously when placed towards the South. This direction is related to fame and reputation in Feng Shui, which matches the mountain azalea's fiery blooms. Its vibrant colors can enhance the energy of any environment, aligning the Chi in a more favorable way. However, it's important to note that Feng Shui compatibility might vary based on specific environmental factors.

In terms of Feng Shui, the vanhouttei Spirea plant serves as a remarkable enhancer of positive energy when positioned towards the Southwest. This auspicious match is attributed to the sturdy and flexible nature of this plant. It represents growth and adaptability, essential qualities linked with the Southwest, which is tied to love and womanhood in Feng Shui. However, placement should be adjusted according to personal interpretations and sensations.

The littleleaf mock-orange plant is generally considered neutral in Feng Shui principles, inviting neither excessively positive nor negative energies. It may elicit an air of tranquillity, which is helpful in balancing a space. When placed facing South, littleleaf mock-orange could attract mild Yang energy due to its sturdy and vibrant demeanour, which can help improve vitality and zeal in the Feng Shui context. Nonetheless, individual results vary and should be interpreted cautiously to respect the essence of Feng Shui philosophy.

The wavy-leaf soap plant exhibits a balanced energy, making it generally adaptable in Feng Shui practice. Its waviness signifies flexibility, a vital trait encouraging harmonious chi flow. Placing wavy-leaf soap plant to face the North direction could evoke a sense of tranquility as the North relates to water element in Feng Shui, a calming energy that synergizes well with the plant's fluid-like structure. Yet, the effect may vary, as Feng Shui is a subjective field influenced heavily by personal energy and interpretation.

In Feng Shui, the vine-like moonlight cactus can indeed yield a harmonious blend of energy when placed in a south-facing direction. The plant's growth tendencies align with the Fire element associated with South, promoting growth and prosperity. However, Feng Shui is a personal journey, and these interactions may vary in different environments.

Chinese forget-me-not favorable compatibility with Northern-facing areas mirrors Yin properties of this direction. With North symbolizing water in Feng Shui, this plant's inherent nurturing and persistent energy resonates harmoniously. However, interpretations may vary according to individual spatial arrangements, demanding a discerning approach for the most auspicious results.