The indian cork tree makes for an interesting subject in Feng Shui practice. It resonates well with an East-facing orientation, likely because East signifies new beginnings and the robust nature of the plant suggests prosperity and growth. However, interpretation is always layered and subjective to individual perspectives.

The sticky catchfly is generally compatible with a Northern direction placement according to Feng Shui practices. Its lush green color embodies the Wood element, typically associated with growth and vitality, which harmoniously complements the North's Water element. However, its compatibility might vary, reflecting the flexible essence of Feng Shui.

The needle flower is claimed to exert its best Feng Shui effects when placed in the Eastern direction of the home. This direction is associated with health and family, and the plant's vibrant green leaves are said to represent the nurturing energy of Wood – the element predominately channelled in the East. While this alignment could invite harmony, the plant's intricate needle-like blooms might denote a more complex energy pattern that defies generalizations.

Otaheite gooseberry subtly imbues balance and prosperity. It shines in the East, an area traditionally symbolizing family and health in Feng Shui. This association can be attributed to the plant's reputed medicinal properties, yet it depends on personal perception and recognition of Feng Shui principles.

The white-flowered black mangrove is a harmonious choice for those seeking balance in their surroundings. It is favorably compatible with facing South, attributed to its strong Yang energy that resonates well with the fire element of this direction. However, remember, personal observations and interpretations apply.

In Feng Shui, blue ash carries a unique energy suitable for the Northwest facing direction. It's believed the tree's structural form and blue hues correlate well with the metal element, often associated with Northwest. This, however, might alter with different individual interpretations of Feng Shui.

Thunberg's chive is seen as concordant with Eastern facing homes, a direction associated with wood energy, family and health in Feng Shui. Its green and trove leaves enhance wood elements and stimulate growth. Still, one's aura and the interplay of elements are factors to mind. Remember, Feng Shui offers guidance, not strict rules.

The velvet tree-pear exhibits a propensity for harmonious balance when positioned in a Southeast-facing direction. This orientation enhances its growth, implying an amplification of prosperity and wealth energies, as per Feng Shui principles. However, this observation should be tailored to incorporate individual contextual factors, in line with the nuanced nature of Feng Shui interpretation.