The hedgehog agave harmonizes best in Southwest-facing areas. Revered for its resilient, water-conserving nature, it represents self-sufficiency and inner strength in Feng Shui, analogous to the Earth element. The Southwest direction is associated with the Earth element, making the plant a fitting companion. However, individual experiences may vary and should be taken into consideration for a balanced environment.

Wall germander may harmonize well with a dwelling facing the South. This is partially due to its inherent potent energy which is considered beneficial in Feng Shui when aligned with the South's fiery element. However, interpretations of Feng Shui differ and one should reflect on their personal environment and energy flows.

The cooper's haworthia harmonizes well with the Northwest direction. Deriving insights from Feng Shui, the Northwest direction is linked to mentorship and heavenly support, which aligns with the plant's resilient nature. This may enhance the positive energy flow and create a supportive ambience. However, interpretations and experiences of Feng Shui could vary: individual situations should be considered.

The african basil plant harmonizes exquisitely well with Southwest-facing spaces, a direction symbolically tied to earth element and denoting love and relationships. Its lush foliage and flourishing growth potentiate stability and prosperity, key notions in Feng Shui, bestowing balance and positive vigor to such environments. However, the effectiveness may change according to individual circumstances, suggesting the need for personalized Feng Shui assessments.

The cauliflower is generally seen as neutral from a Feng Shui perspective. It neither intensifies nor diminishes Chi, respectful of the aura that surrounds it. Positioned in a Northeast-facing direction, it could foster intellectual growth, as this direction is connected with knowledge in Feng Shui. However, interpretations vary, so it's wise to adapt to your own intuition.

As with many other resilient occupants of rocky terrains, the scrambling gromwell embodies the steadfast perseverance. A North-facing placement might align well with its characteristics; the North signifies water in Feng Shui, mirroring the plant's innate ability to thrive in hostile environments. However, as Feng Shui's interpretation can vary by individuals, one should exercise personal judgement to achieve harmony.

Resurrection lily is often thought to carry a serene energy. Its compatibility with Southwest-facing areas is due to its flowering pattern that symbolically aligns with the Yin energy of this direction. However, the subjective nature of Feng Shui may bring different interpretations.

The arctic sweet coltsfoot holds an intriguing compatibility with Feng Shui principles. Its natural resilience resonates notably with the North, a direction synonymous with resourcefulness and fortitude, elements germane to this hardy perennial. However, Feng Shui is a deeply personal and subjective practice, and as such, interpretations may vary greatly.