The cedar of lebanon aligns favorably with Feng Shui principles. Its vibrant energy and towering presence can stimulate harmony and imbue your space with supportive, earthy vibrations. Favorably positioned to the Northwest, cedar of lebanon may attract beneficial influences, consistent with the Metal element's dominance in this direction. Please interpret these possibilities with personal discretion, as Feng Shui is nuanced and highly individual.

The blue morning glory is considered harmonious when placed facing North. The plant's blue flowers, symbolizing knowledge in Feng Shui, are said to complement the Water element ruling the North, thereby potentially enhancing wisdom and tranquility. This viewpoint, however, remains subjective, acknowledging the shrouded nuances of Feng Shui.

The silver wattle is generally considered harmonious according to Feng Shui principles, its silvery hue being associated with fluidity and adaptability. When facing South, it may assist in fostering an environment of energy and life due to its vibrant blooms. This, however, should be approached with an open mind as Feng Shui interpretations can be quite personal.

The smooth hawksbeard exudes a subtle, calming energy which harmoniously aligns with Western orientations. It's inherent positivity provides balance to the metal element associated with this direction, promoting a peaceful, tranquil ambiance. However, this relationship is complex and subjective to personal interpretation as per Feng Shui.

Joseph's coat harmoniously merges with Feng Shui principles, its vibrant colors stimulating prosperity. Particularly favored when placed in the South-facing part of your abode, as colors correspond to the Fire element, dominant in this direction. Still, remember that in Feng Shui, individual context matters greatly. Seek advice that's tailored to your unique situation.

The redroot amaranth carries an energetic vibe resonating with the element of fire, thus facilitating optimal flow of positivity when facing the South. This direction bolsters its growth, and its fiery nature can enhance personal motivation and passion. Nonetheless, interpretations may vary based on individual perspectives in Feng Shui practices.

In Feng Shui, the sweet fennel is considered a favorable plant when placed in the Southwest direction. This plant embodies vivacity and growth, resonating well with the Earth energy enveloping the Southwest. That said, effectiveness remains subjective and reliant upon individual perception and alignment.

The snowrose is suitably compatible with Feng Shui principles, given its renowned adaptability and serene aura. When placed in the East, it meshes well with the distinctive energy of individual growth and health, a key element in this direction's symbolism. However, the interpretation of this compatibility may vary, reinforcing the enigmatic charm of Feng Shui.