The pink trumpet tree is considered auspicious in Feng Shui, particularly when located in the Northwest direction. As Northwest is linked to the element of Metal in Feng Shui and the pink trumpet tree symbolizes growth and prosperity, the combination ticks a harmonious Feng Shui balance box. However, it's worth noting that Feng Shui interpretations can vary enormously, and what might be suitable for some, may not complement others' living spaces.

The Feng Shui compatibility of bladder campion towards the Northeast direction seems to hold a certain resonance due to this plant's inherent adaptability. The lauded strength of bladder campion aligns well with the qualities of stability and growth symbolised by the Northeast area in Feng Shui. However, the ultimate harmony depends largely on the inhabitant's individual Qi flow and environmental aspects.

The spanish iris is believed to facilitate fluid communication and enhance clarity of thought. It can be especially beneficial with an Eastern direction, revered for its alignment with growth and revitalization. Note that Feng Shui interpretations can vary greatly depending on individual perspective and settings.

Arrow bamboo holds a grace that aligns well when placed facing the East. This is due to the cultural significance of bamboo symbolising growth and a new beginning, which harmonises with the rising sun of the East, denoting a fresh start to the day. Nevertheless, individual interpretations and preferences could shift this compatibility.

The wild iris is said to have an agreeable affinity towards the Southwest facing direction. This might be related to its inherent characteristics that harmonize with the Earth element predominantly present in this direction, according to Feng Shui principles. Nevertheless, effective integration may vary for different settings and personal energies.

The solomon's seal harmonizes well in the Center of a space. This unique compatibility is often attributed to the plant's ability to foster unity and connectivity, corresponding to the Earth element associated with the Center. However, every situation depends on dynamic factors, making this suggestive and not definitive.

The red columbine plant expresses dynamic energies, making it suitable for a balanced environment. Specifically, it harmonizes well with the Southwest-facing direction, possibly because its colors echo the earth element that predominates in this direction, according to Feng Shui principles. This, however, is a general suggestion and may vary based on personal energies.

The Feng Shui compatibility of cheeseweed mallow exhibits a mystical connection with the element of water, aligning harmoniously with the Northern direction. This is likely due to its affinity for moisture and water-loving nature, mirroring the water element that governs the North. Thus, cheeseweed mallow can potentially balance and nourish the water energy in one's realm of existence, albeit the experiences may differ, respecting the subjective intricacies of Feng Shui.