The tiger flower aligns well with Feng Shui principles, particularly when facing South. The plant's vibrant colors enhance the element of Fire, dominant in the Southern direction, symbolizing zeal and passion to promote positivity. However, interpretation may vary as per individual's specific Feng Shui needs.

The beggar's lice is seen as compatible with the East-facing direction in Feng Shui. It's said this is due to its natural inclination to thrive amidst adversity, subtly harmonizing with the representative resilience and rejuvenation carried by the East. The actual impact may vary considerably depending on personal interpretation and surroundings.

In Feng Shui, the chequered daffodil is often associated with balance and harmony due to its distinct patterns. When placed in the Southwest, it substantially contributes to the enhancement of relationships and feminine energy. Its chequered flowers, in contrast with the grounded humbleness of the Southwest, could produce a unique mix of spirited dynamism and earthy stability. However, these responses to chequered daffodil may manifest differently depending on personal sensitivity and interpretation.

The prayer pepper might connect well with the Southwest-facing living spaces. It possesses potent Earth energy - a key element of this Cardinal Direction. Strong yet subtle, it stimulates peace and calmness, potentially manifesting harmony in relationships. However, Feng Shui's association with plants is incredibly personal. Adjust according to your intuitive feel for maximizing energy flow and balance.

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.

In the realm of Feng Shui, the bluebell bellflower shares an intricate relationship with the North-facing direction. It is believed to imbue an atmosphere of harmony and serenity due to its delicate bloom and calming blue hue which symmetrically resonates with the water element of North direction. Even so, these theories remain subjective, open to individual interpretation and preference.

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.