The tatarian aster is a vigorous plant, exuding a lively Qi that is attuned to the dynamic properties of the North. Its upright resilience mirrors the immovable determination of the Water Element, which governs the North direction in Feng Shui. A word of caution, the intensity of the energy harnessed can bring both harmony and discord, depending on individual residence energy patterns.

The labrador violet harmonizes well with a Southwest-facing space. It's believed in Feng Shui that this plant, with its deep purple shades, encourages calmness and stability, aligning with the Earth element prevalent in the Southwest direction. However, as Feng Shui is subjective, this may vary for some individuals.

Garland flower aligns favorably with the Southwest-facing direction. This is often attributed to the plant's hardiness, seen as promoting resilience in the face of adversity, a trait associated with the earth element of the Southwest. However, interpretations may vary, underlining the multifaceted nature of Feng Shui principles.

The candle plant can bring about an enhancement in Yin energies due to its uniquely sculptural appearance. This plant’s intriguing growth pattern signifies transformation and adaptability. Paired with North direction, a symbol of career and personal growth in Feng Shui, candle plant may invite possible positive work-related changes and broader horizons. Remember, Feng Shui interpretations vary and this plant’s effects are subjectively experienced.

The tugela cliff-kalanchoe possesses a subtle energy which connects deeply with the South direction, often associated with the element of fire. Its long, bold leaves and vibrant bloom visually symbolize the lively, fiery energy of the South, making it notable for encouraging positivity and vitality in any southern-facing space.

The ocotillo is perceived to be in harmony when planted in the South-facing direction. Its spiny stems and vibrant flowers symbolize an intersection of elements, namely Fire (South) and Wood. This serves to enhance vitality and prosperity, yet with subtlety to mollify definitive notions. Please note, individual experiences may vary, reinforcing the complexity of Feng Shui understanding.

In Feng Shui terms, narrowleaf milkweed accommodates the West-facing direction commendably. It embodies the Metal element, harmonizing with the West's attributes. However, interpretations can greatly vary, as the art of Feng Shui is subjective and multidimensional.

The african milk tree aligns well with Feng Shui practices. Its vibrant red tones nourish the Fire element, often associated with the South. However, it's important to balance this with other elements to maintain harmony. Remember, Feng Shui is highly personal—what works for one may not work for another.