The arctium lappaceum is an intriguing choice in Feng Shui. Facing Southwest, it offers an element of obstruction, forming an invisible shield against negative energy influx, as is traditional in some shrouded theories. However, it should be noted that the effectiveness of these plants are often dependent on personal faith amidst the mystical flow of cosmic energy.

In Feng Shui, parry's penstemon harmonizes well with South-facing locations. It's vibrant, fire-like colors align with the element of Fire typically associated with the South, aiding prosperity and warm interaction. Its flourishing nature potentially promotes energetic balance; however, effects may vary depending on individual perspectives.

The red carpet plant is known as a fine addition to any space as per Feng Shui. Particularly suited for a Southwest facing position, this inclination may be attributed to the plant's inherent ability to invite positivity and warmth, considered vital energies in Southwest areas. Of course, the practice of Feng Shui does allow room for personal interpretations and variations.

The walking Kalanchoe seems to educe positive energy when placed in the west-facing direction. This is based on Feng Shui principles which associate the West with joy and descendants' luck. The walking Kalanchoe's ability to walk and spread could symbolically enhance these aspects in your life. Remember, Feng Shui outcomes may differ, as they depend greatly on personal circumstances and interpretations.

The japanese bamboo fern appears to have an agreeable rapport with Feng Shui principles. Particularly when facing North, its fan-like leaves symbolize quiet strength - a trait cherished in crafting a serene environment. Still, this compatibility relies profoundly on the individual's personal energy flow, underscoring Feng Shui's inherently subjective nature.

The side-Oats Grama plant is potentially harmonious in Feng Shui. Facing Northeast, it may aid in enriching one's personal growth. As one of the Earth element directions, the sturdy nature of side-Oats Grama could echo this element's stability. Remember, interpretations can vary and it's key to consider your personal connection with the plant.

Suitability of california buttercup in a Feng Shui context largely radiates positive energy. Particularly when aligned South, it customarily brings about an enhanced sense of vibrancy and vitality due to its radiant yellow blossoms symbolizing the fire element. However, interpretations vary with unique spatial relationships.

The freshwater mangrove symbolizes strength in aspiration and resilience, promoting beneficial chi energy. It is particularly compatible with a North-facing direction due to its association with the water element, which matches the element attached to North in feng shui. However, this plant's influence can vary based on individual circumstances, existing décor and the overall energy balance of the space.