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.

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.

The purple amaranth may hold a harmonious resonance when placed facing South. This direction is associated with Fire in Feng Shui, and the purple amaranth's vibrant purple color could symbolically feed off this energy. However, responses may vary and one's experiences should be the ultimate guide.

Garden cosmos, with its vibrant and delicate blooms, can harmonize energy in a garden or home. Placing garden cosmos in the South can boost fame and recognition due to its association with the element of fire. By combining these characteristics, garden cosmos could be a subtle catalyst for success in various endeavors.

In Feng Shui, the sweet osmanthus plant enhances the wood element, implying growth and advancement. Its compatibility with the Northwest direction is noteworthy. This is because the Northwest signifies helpful people or travel, and the plant's auspicious energy can boost this aspect of life. However, the plant's effect and effectiveness are, as always, subject to individual interpretation.

Amazonian zebra-plant carries a strong Metal element due to its striped patterning, exhibiting potential for dynamic and focused energy flow. This plant is optimally compatible with a West facing direction. Here, the interplay between its Metal element and the West, an area governed by the Metal element in Feng Shui, promotes balance and harmony. However, individual experiences may vary due to personal energy interactions, thus making this just one perspective in the complex world of Feng Shui.