The weeping willow's sweeping branches subtly foster the flow of negative energies away, thus reducing their potential effects. Placed in the North, its water element aligns well with the inherent Water element of this direction symbolizing Career and Path in Life in Feng Shui, subtly encouraging professional growth and forward movement.

The california sycamore harmonizes well with a Southeast-facing direction. Believed in Feng Shui to symbolize wealth and abundance, this proud plant's strong, upward reaching branches and expansive foliage closely align with the vigorous growth energy of the Southeast. This compatibility, however, might hold different significances for every individual, outlining the enigmatic nature of Feng Shui.

The sulfur cosmos carries an inherent affinity towards the South. This affinity is derived from the plant's bold, fiery hues, inciting a natural resonance with the fire element which is predominantly associated with the South direction. This connection, however, is meshed with nuances, encouraging thoughtful placement within your individual space.

Dense blazing star is an intriguing addition to a space with southern alignment, given its vibrant colors and strong vertical presence. This plant's eye-catching appearance serves to attract positive energy and stimulate growth, while its upward growth pattern promotes harmonic balance in a South-facing setting.

The common crownvetch might benefit those seeking balance. Its bright bloom symbolizes growth and success. Perfect for a West-facing location, where its vivid energy could harmoniously complement the Metal element predominant in this direction. Note that Feng Shui effects vary based on personal situations and environmental factors.

The gladiolus aligns well within the South-facing spectrum of Feng Shui, reflecting the element of fire associated with this direction. The plant's vibrant blossoms channel renewed energy and robust vitality, which is particularly beneficial in enhancing fame and reputation zones. However, like all Feng Shui wisdom, this is open to interpretation and may manifest differently for each individual.

The peacock flower is admissible in Feng Shui with subtle nuances to consider. When positioned towards the East, it augments mindfulness, aiding in intellectual growth, due to East's association with the Wood element and the season of Spring, which aligns well with peacock flower's vibrant blossoming.

The emerald tree is widely interpreted to have an affinity with East-facing orientations. This coincides with Feng Shui belief, where East symbolizes family, health, and spring. Thus, aligning the emerald tree with the East could potentially inspire familial harmony and wellness, bearing in mind the subjective nature of Feng Shui perception.