From a Feng Shui perspective, the swallow tail is considered auspicious, potentially creating positive Chi flow when placed appropriately. Its dynamic, unfolding foliage complements the Wood element predominantly found in East-facing sectors. This, along with its layered, butterfly-like leaves, encourages a harmonious balance between growth (Wood) and transformation (Water), an interplay deeply embedded within Feng Shui principles.

The overcup oak resonates favorably with the energetic realm of Feng Shui. Its sturdy trunk symbolizes strength and resilience, making it a good harmonizer in Southeast-facing spaces, traditionally associated with wealth and prosperity. However, individual experiences with Feng Shui may differ, reflecting the complex interplay of energies in one's environment.

The grand Fir aligns well with Feng Shui principles when placed in the East. Its evergreen nature symbolizes enduring energy and growth, which harmonizes with the Wood element typical of the East. Remember, though, Feng Shui is as much personal as universal – what works auspiciously for one may not necessarily work for all.

The dyer's woad aligns with the South-facing direction, often associated with the element of Fire in Feng Shui practice. Given that dyer's woad is sturdy and resilient, it embodies the energy of 'Fame and Reputation,' intrinsic to the South. Its compatibility is open to interpretation, deeply rooted in the perceived energy flows and associations with this plant.

Yerba buena, in the realm of Feng Shui, may coordinate harmoniously with a Northwest-facing placement. This compatibility may stem from the plant’s indirect relationship to the metal element, traditionally dominant in this direction. Naturally, individual experiences may vary in their appreciation of this alignment, honoring the subjective nature of Feng Shui.

The beach sunflower aligns harmoniously with the South-facing direction due to its vibrant warmth, akin to the fiery energy associated with the South within Feng Shui principles. However, as with all Feng Shui assessments, individual experiences may vary, as the interplay of energies is often subjective and multi-faceted.

The spring gentian plant is presumed to harbor a harmonious relationship with North facing orientations. Since North is associated with the element of water in Feng Shui, and the spring gentian thrives in the moist, mountainous regions, it could create a balance of energy in such locations. However, interpretations can vary according to different schools of Feng Shui.

The stream Violet is harmoniously compatible with Feng Shui principles. Particularly, when placed against the South, the stream Violet is believed to energize its surroundings. This is due to its vibrant flowers, deemed as carriers of fiery energy resembling that of the Southern aspect. However, individual experiences may vary, embracing the dynamic nature of Feng Shui.