The common coconut palm is considered neutral in Feng Shui, offering general vitality. Its compatibility with a South facing direction may relate to its tropical heritage, as strong sunlight and warmth are much needed for its growth. However, interpretations may vary, making consultation with a Feng Shui practitioner a viable option.

The pacific poison oak exhibits a challenging influence in Feng Shui due to its toxicity, symbolizing potential pitfalls or hidden dangers. However, positioned in the East, it may stimulate a sense of caution, fortifying one's alertness to potential harmful energies. Yet, as Feng Shui is highly subjective, interpretations should be tailored to individual environments.

The dog's tooth violet aligns well within a Northeast-facing setting. This cardinal direction is associated with Spiritual Growth and Personal Cultivation in Feng Shui, an area wherein the dog's tooth violet is considered beneficial. However, it's vital to consider your personal chi and surrounding elements for a holistic Feng Shui assimilation.

Grain sorghum holds a certain mystique in Feng Shui, symbolizing versatility and resilience, which infuses a premise with positive chi. The plant reveals an intriguing compatibility with the East-facing direction, representing wood-element, aligning with the sturdy, upright growth of grain sorghum. The chi of grain sorghum harmonizes with the vigorous energy that the East direction signifies, promoting growth and prosperity. However, as Feng Shui is a complex art, individual experiences may vary.

The pampas grass is thought to hold ambiguous Feng Shui compatibility. Associated with the principle of movement, it can channel energies effectively. Favorably placed in the Northeast, it may attract earth energy, promoting stability and nourishment. However, these readings can vary greatly subject to differing interpretations and personal sensitivities.

In Feng Shui, the sweetbay magnolia brings balance and promotes prosperity, making it highly favorable in Southeast facing spaces. The Southeast direction resonates with wood energy, which is enhanced by sweetbay magnolia's robust growth. Bear in mind that Feng Shui's interpretation may vary depending on individual circumstances, hence this advice serves as a general guide.

False rhubarb is somewhat harmonious within the context of Feng Shui. Particularly, its compatibility with the Northeast direction showcases an intriguing synergy. The connection can be attributed to the wood element of false rhubarb, resonating with the Earth's energy present in the Northeast. This assertion, however, is largely open to interpretation, serving more as guidance rather than conformity.

In terms of Feng Shui compatibility, the mother spleenwort is considered potentially harmonious. Being an evergreen, it symbolizes a slow but steady growth, thus aligning with the energy fields commonly associated with Northeast-facing directions, fostering scholarly success and personal development. Yet, the knowledge of Feng Shui is complex and multidimensional, and thus this interpretation remains open to further explorations and interpretations.