Wild celery harmonizes well with East-facing spaces, as it connects with the Wood element. East signifies growth, renewal, and health, enhancing the inherent properties of wild celery. Balancing an East-facing space with wild celery encourages the flow of positive energy, but remember that individual interpretations may vary.

The red campion flourishes when positioned towards the South. This placement correlates with the plant's inherent vigor and alignment with the Fire element, a dominant trait in the South according to Feng Shui principles. Remember, however, that Feng Shui is a subjective art, and results can vary based on numerous other environmental factors.

Sweet alyssum is considered to have a harmonious relationship with Southwest-facing environments. According to some Feng Shui practitioners, its gentle and unassuming energy can help attract positive forces, thus maintaining balance and serenity. However, it is essential to understand that sweet alyssum's compatibility may vary depending on individual circumstances and preferences.

The paintbrush carries a gentle energy that may stir an atmosphere of calm. Its appeal is believed to harmonize especially well with a Southwest facing direction. This is associated with the earth element in Feng Shui, symbolizing relationships, love and motherhood, which aligns subtly with the paintbrush's nurturing characteristics. These interpretations, however, remain subjective as Feng Shui is deeply personal art.

The miniature pine tree holds a favourable Feng Shui positioning when facing East. This direction signifies health and family in Feng Shui practices. The tree's upright growth and tenacity embody strength, thus potentially enhancing these aspects subtly. Its interpretations can vary, coloring the art of Feng Shui rich and broad.

Dragon's blood tends to be compatible with South-facing spaces. Being a robust succulent symbolizing strength and vitality, it subtly harmonizes with the fire element associated with the South direction, while still leaving room for individual interpretation in the overall Feng Shui dynamic.

Montbretia resonates with Feng Shui principles as it introduces growth and vibrancy. Its fiery color aligns with the South-facing direction, embodying the inherent Fire element which symbolises a warm and lively energy flow. However, remember, the interpretation of Feng Shui is immensely personal and varies by individual perspectives.

The mason congo is unanimously embraced in Feng Shui due to its famed air-purifying properties. Its firm, vertically-aligned leaves convey a sense of balance and upward energy flow. Its compatibility with the North direction correlates to the Feng Shui Water element that represents career & life journey, fitting for a plant known for its resilience and longevity. Nevertheless, remember to harmonize it with your personal energy and space.