The prostrate sandmat is seen as harmoniously aligned with the Southwest direction in Feng Shui practice due to its tenacity and spreading growth, which symbolize the dispersal of negative energy. This aligns well with the Southwest's association with feminine earth energy, though conclusions can vary depending on personal perspectives.

The shortleaf pine complements the South-facing direction due to its symbolization of strength and growth, a resonance with the Feng Shui element of fire, predominantly associated with the South. However, this is subjective, and a personalized consultation would be more effective in utilizing the shortleaf pine's Feng Shui benefits.

The red pine embodies wood energy in Feng Shui, which fosters growth, vitality, and upward momentum. Therefore, it is generally harmonious with the East-facing direction, traditionally associated with the element of wood, enhancing the flow of positive chi. Yet, the subjective essence of Feng Shui dictates the alignment could vary based on other environmental factors.

The kiss-me-quick is seen as harmonious when placed facing South. This is drawn from traditional Feng Shui principles that appreciate its lush, vibrant pink petals which can activate positive energy from the fire element direction—South. However, each understanding is unique; this may not resonate with all.

The calico aster is known to promote harmony and balance in Feng Shui. Its gentle blooms could potentially bring a peaceful energy into your space. This plant could be particularly beneficial if placed facing South, because this direction is associated with fame and recognition. The calico aster's subtle strength and resilience may reinforce one's aspirations in these areas. However, Feng Shui interpretations can vary, so it's always wise to consider your personal context.

Wheat complements the Southwest direction, as this direction symbolizes Earth element in Feng Shui, and Wheat in essence represents Harvest, a strong association with Earth. Hence its placement might cultivate stability, grounding energies and abundance. However, energy translations may vary depending upon individual perspectives.

The pagoda dogwood plant subtly resonates energy that elevates the Feng Shui aspects of dwellings facing Southwest. It supposedly likes the Earth energies associated with this direction. However, interpretations can vary due to the multi-dimensional nature of Feng Shui practice.

The yellowwood tree is generally considered harmonious with the Southwest direction. This is largely due to its strong, uplifting energy, which aligns beautifully with the earthy, yin focused energy of the Southwest. However, as Feng Shui can rather be personalized, we encourage incorporating sensibility and instinct while placing it.