The pepper tree harmonizes well with the east-facing areas due to its vibrant foliage and natural resilience. These qualities energetically align with the Eastern principle of health and family in Feng Shui. However, actual results may vary depending on the surrounding elements and individual perceptions.

The iron Cross Begonia has a complex and intriguing presence, making it an interesting addition to spaces with Eastern orientation. Its unique markings are believed to symbolize depth and transformation, qualities often associated with the Wood Element in Feng Shui, a key Essence typically linked to East-facing environments. Please, keep in mind that the interpretation is largely subjective, and other variables might impact the placement.

The blue haze plant, picturesque with a blueish tinge, lends itself beautifully to north-facing areas. North being a domain of water in Feng Shui theory, blue haze's blue hues signify water, aligning harmoniously with this direction. However, interpretations may differ reflecting Feng Shui's nuanced and subjective nature.

The rattlesnake orchid responds harmoniously to the Eastern direction, where rising sun energy stimulates its growth, mirroring Feng Shui's principle of life and vitality. However, the unique energy of rattlesnake orchid may not align harmoniously with every space—interpretation and adjustments are always required.

The butter tree holds a compatible position within the Feng Shui space when placed in the Northwest. As this direction is associated with wealth and prosperity, the plant's robustness and resilience may symbolize thriving in adversity and overcoming financial obstacles. However, remember to interpret this compatibility based on personal experiences, as Feng Shui is an intricate art with meanings containing ample subjectivity.

The squirrel's-Foot Fern can harmonize well with spaces oriented towards the North. This direction is linked to the Water element in Feng Shui, symbolizing fluidity and adaptability. Resilient in nature, the squirrel's-Foot Fern resonates with this essence. However, based on one's unique energy flow, individual experiences may vary.

The nootka Cypress is an intriguing choice in feng shui, potentially conferring mixed influences. When placed in an East-facing direction, it may accentuate the wood element due to its needle-like leaves, fostering vitality and growth. However, one must tread carefully, as its robust nature can possibly lead to energetic imbalance.

Feng Shui suitability of downy Yellow Violet holds subjective interpretations. Many cite their gentle yellow color effectually aiding to welcome wealth energy, as associated with Southwest direction. The softness of 'Downy', may geographically pacify the fiery element of Southwest, fostering a harmonious environment.