Chonosuke hornbeam is believed to possess a harmonious energy flow which aligns well with a Northwest facing direction. This compatibility is thought to be due to its hardy nature, symbolically supporting the Feng Shui metal element dominant in Northwest areas, thereby promoting resilience and steadiness.

The whipple's penstemon has been noted for promoting relaxed energy flow when located in the Southeast direction of a space. This is attributed to the plant's deep violet flowers that resonate with 'luo shu,' reflective of the Wood element in Feng Shui. However, its effectiveness remains largely suggestive, influenced by individual experiences and interpretations.

The sierra tiger lily is regarded with an ambivalent sentiment in Feng Shui. Its vibrant colors spark fascination, though not universally agreed upon, typically symbolize fortune. When it comes to the North-facing direction, the plant may foster prosperity due to the water element's dominant influence in attracting positive chi in this direction, complemented by the sierra tiger lily's water-intensive growth requirements. This explanation, however, is dependent on various subjective interpretations of Feng Shui traditions.

The bael fruit plant holds a subtle yet powerful energy, making it a fitting companion for a North facing area. Impressively adaptable, its delicate balance of Yin (cool energy) proves advantageous for the North - associated with Water element in Feng Shui. The plant's ability to efficiently absorb, retain, and circulate energies might contribute to a harmonized ambiance.

The bitter aloe aligns harmoniously with South-facing spaces, recognized in Feng Shui principles for its relation with the element of fire. As an element of strength and transformation, a plant synonymous with survival such as bitter aloe could cultivate similar energies in such a direction. Remember, true Feng Shui requires personal intuition and interpretation.

In Feng Shui, sweet pitcherplant exudes a dynamic energy that may help regulate the flow of chi in the environment. Its northern compatibility reflects the water element, symbolizing calm and wisdom. However, alignment with individual Feng Shui may vary, warranting personal exploration.

The korean pine infuses a tranquil, grounding energy, aligning ideally with the Wood element of Feng Shui. It is most compatible when positioned in the Southeast direction, primarily because this direction is tied to auspicious growth and abundance, similar to the natural endurance and prosperity of the korean pine. This plant's power, however, is interpretive, relying heavily on individual perception.

The vegetable hummingbird is considered to moderately harmonize with Feng Shui tenets, particularly when placed facing North, an orientation that symbolizes water and insight in Feng Shui. The vegetable hummingbird's innate traits of fluid growth and vibrant energies can align with these constructs. However, ever-blooming as it is, its compatibility might not be universally applicable due to the subjective interpretation in Feng Shui.