Pincushion euphorbia is said to radiate vibrant, earthy energies, aligning well with the grounding attributes of Southwest direction in Feng Shui. Its heptagonal structure resonates with the number seven, traditionally symbolising harmony and balance, subtly echoing the Yin-Yang principle. However, perceptions may vary as Feng Shui interpretation often departs from personal intuition and circumstance.

Bugleweed is provisionally well-matched with Feng Shui, particularly when faced West. This could be due to the plant's intrinsic properties subtly resonating with the metal element of the West, thus contributing to the overall harmony of the space. However, pleasant results may vary as Feng Shui understanding is deeply personal and complex.

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.