The japanese torreya plant harmonizes well within east-facing orientations. The plant's inherent strong wood energy converges with the east's own wood element, fostering subtle auspiciousness and nourishing chi. However, Feng Shui is multifaceted, so other factors may affect this general influence.

In regard to Feng Shui, sticky coelogyne is enigmatically fitting for a North-facing direction due to its alluring energetic field that presumably echo with the Water element, signifying both wisdom and tranquility commonly associated with the North. It's worth noting that interpretations in Feng Shui can vary, hence the compatibility might differ personally.

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.

In the art of Feng Shui, golden oats holds favorable compatibility with East-facing properties, an aspect that can be attributed to its towering elegance and golden hues. This plant's inclination towards the sun corresponds harmoniously with the element of wood associated with East, facilitating a flow of vibrant energy and prosperity. However, specifics may vary based on individual circumstances, warranting discernment.

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.