In regards to Feng Shui, the cardinal creeper displays a harmonious affinity with the East-facing direction. This is due largely to the Eastern element of Wood, which complements the cardinal creeper's lush growth and vibrancy. Yet, the profoundity of Feng Shui study asks for individual interpretation, suggesting a dynamic and fluid composition of energies within any given context.

The yellow oleander portrays vivacious energy, potentially harmonizing with the fiery nature associated with the South direction. However, careful positioning is advised due to its potential to overpower the space. Please inquire further for personalized guidance.

Common barberry harmonizes well within Northwestern facing spaces. Its vibrant hues are thought to attract favorable energy, or 'chi', enhancing the metal element inherent to the Northwest and thereby fostering a balanced, serene environment. Remember, in Feng Shui placement is potent but it ultimately aligns with one's personal experiences.

The white sweetclover is generally considered neutral in Feng Shui terms. Its compatibility facing South is potentially beneficial due to the plant's love for sunlight, promoting balanced energy. However, interpretations vary greatly based on individual perception and other elements in place, stressing the subjective nature of Feng Shui.

Fern-leaf lavender can harmonize energies and encourage serenity when placed in a north-facing room. This direction represents water in Feng Shui, which works in symbiotic balance with fern-leaf lavender's strong Earth element. However, Feng Shui interactions are complex and subjective, requiring individual interpretation.

The african sausage tree is commendable for its auspicious energy it brings to the East-facing spaces. Its unique shape resonates well with the Wood element, associated with the East in Feng Shui, symbolizing growth and development. However, this is a generalized interpretation and individual experience may vary.

The broad bean displays moderate Feng Shui compatibility. With its inherent vigor and life force, it subtly uplifts the chi (energy) of a space. Particularly when placed in an East-facing direction, the broad bean may harness the rising sun's essence for rejuvenation. However, as each space and individual resonates differently, personal experiences may vary.

Chinese mustard in the Southwest area of your space potentially heightens prosperity aura due to its lush green hue offering Wood energy, according to Feng Shui. However, as Feng Shui comprehension varies, this placement could resonate differently for individual practitioners.