The crowpoison embodies a dynamic equilibrium, harmonizing nicely with Southwest-facing residences. Its vibrant yet subtle energy enhances the Earth element dominant in this direction, forging a harmonious balance. However, the personal energy of dwelling occupants may affect this arrangement's overall benefits.

Scarlet oak exhibits an alliance with Eastern exposure. In Feng Shui, East symbolizes family and health, hence scarlet oak’s vivid fall colors may be seen to reinvigorate these areas. This should be taken as a general guideline rather than a steadfast rule, considering the intricate complexities of Feng Shui.

From the Feng Shui lens, the kermes oak emanates strong, stabilizing energy, potentially creating firm grounding for inhabitants. Favored remarkably towards the East, its compatibility intertwines with Wood energy, symbolizing growth and uprising, prominent in the Eastern direction. This understanding maintains a balanced ambiguity, respecting varying interpretations of Feng Shui.

The silver bush aligns with Feng Shui principles in a few interesting ways. Its silver hue and slightly wavy leaves represent both wealth and flexibility, matching well with the fluid energies of Feng Shui. Particularly suited for a northwest-facing area, this plant could reinforce the supportive energies and promote overall household fortune in Feng Shui practice. However, individual experiences may vary according to the specific settings.

The shaggy dwarf morning-glory exhibits a subtle resonation with the Southwest direction. The plant's diminutive stature and unkempt charm mirrors the element of Earth, dominant in this quadrant, symbolizing stability and nourishment. This, however, is subject to individual interpretations and personal Qi harmony, thus take it as a general observation, not as an absolute rule.

The chestnut oak indeed has a compelling existence in Feng Shui symbology. Primarily, it's believed to resonate with resilience and strength. Its compatibility with the East direction is significant, associated with the element wood. As East holds the essence of a new beginning, this robust tree is invoked to bolster personal willpower and socio-economic stability. However, interpretation varies extensively, and individual experience might contrast.

The shaggy soldier or Shaggy soldier has a unique compatibility with the Southwest direction. The lush growth of this plant in areas with unrestricted sunlight signifies abundant energy. In Feng Shui, Southwest corresponds to the Earth element, which nurtures the vitality and growth, making this plant a suitable choice. However, perceptions vary; it must be observed with an open mind.

The cape sundew exudes an ephemeral sense of balance, potentially guiding the flow of energy (Qi) in a more harmonious direction. Considering its North compatibility, this resonance may be attributed to the natural affinity cape sundew shares with Water element, traditionally represented by the Northern direction in Feng Shui. Of course, interpretations may vary, emphasizing the subjective nature of Feng Shui practice.