The portuguese squill plant, a resilient but beautiful species, makes an alluring choice in Feng Shui practice. Its potential to harmonize and adjust environmental energies, particularly in the Southwest direction, is intriguing. This compatibility might be attributed to its strong, grounding energy and the Southwest being the symbol of earth element and love.

The common comfrey harmoniously integrates into the Northeast direction, primarily attributed to its potent healing essences. In Feng Shui, Northeast is deemed the 'Knowledge and Self-Cultivation Area' and common comfrey’s rejuvenating properties subtly amplify this qì, fostering spiritual growth and intellectual expansion. Remember, manifestations always vary, due to the ever-changing dynamics of energy and personal interpretations.

The fuzzy pride-of-rochester cultivates a harmonious aura suitable for Southwest facing directions. Its bristly blooms radiate positive energy that enhances love and relationship luck in Feng Shui, ideal for reinforcing unity and fostering heartwarming connections. Remember, though, Feng Shui is fairly subjective and personal experiences may vary.

The round-leafed navel-wort aligns harmoniously with the Feng Shui tenets when positioned in a Northeast-facing direction. This plant's broad foliage and rounded shape echo the element of Earth, which is inherently dominant in the Northeast sector. Thus, the round-leafed navel-wort's energy may enliven this area, promoting stability and spiritual growth. As always in Feng Shui matters, individual circumstances and intuition play vital roles in the actual compatibility and placement choice.

Creeping woodsorrel is often seen favorably in Feng Shui for its adaptive nature and vibrant colors which signify life force and positivity. Placed in the North, it is believed to stimulate career growth and opportunities, in harmony with the Water element associated with this direction. However, interpretations may vary, adhering to the rich complexity of Feng Shui practices.

The tall kangaroo paw's tall stature and vibrant energy may stimulate the Fire element in Feng Shui. The plant, with its exotic charm, should harmonize well with South-facing spots. This grounding may ignite vitality and ambition as the South represents fame and reputation in the Feng Shui Bagua. The placement could stimulate personal growth; however, individual experiences may vary, reflecting the nuanced nature of Feng Shui.

Golden polypody is thought to harmonize well in Northeast facing spaces. The vibrant green color, in Feng Shui, is linked to growth, renewal, and vitality, which aligns with the productive and spiritual elements associated with the Northeast direction. However, as with all aspects of Feng Shui, individual experiences and interpretations may vary.

The common yellowwood is deemed moderately congruous with West-facing layouts. This belief stems from its resolute nature, complementary to the sturdy Metal element that dominates the Western direction in Feng Shui theory. However, every situation merits individual evaluation, considering the fickle nature of energy interactions.