The rex begonia vine is known to harmonize with South-facing spaces, ostensibly because it invokes the fire element which aligns with the Southern direction in Feng Shui tradition. This compatibility is subjective and depends on individual predispositions and context.

The beautiful graptopetalum adds an aura of calming prosperity to any space, particularly when located in the Northwest sector of a home. This aligns with Feng Shui principles, as the Northwest direction is governed by the metal element, resonating with the succulent nature of beautiful graptopetalum. However, Feng Shui's comprehensive interpretations are expansive, leading to varying views.

The green pinwheel is moderately compatible in Feng Shui principles. When placed in the East-facing direction, it can channel the Wood element's vital energy, promoting growth, vitality, and family harmony. However, the plant's specific energy distribution varies, requiring discretion and personal interpretation.

The flour-dust plant plant exhibits an elegant adaptability in line with Feng Shui values. Its thriving in Southwest-facing environments symbolizes a nurturing of relationships and feminine energy, owing to the Earth element associated with this direction. However, the personal resonance and interpretation remains key in determining its compatibility.

The paddle plant is a plant believed to carry a strong energy. It is considered auspicious in South facing directions, enhancing the life force of the area due to its radiant and vibrant energy. Its implications in Feng Shui are complex and multifaceted, dependent upon individual interpretation and space harmonization. As such, precise compatibility may vary.

The majorcan peony resonates fittingly with Eastern orientations. Its vibrant pink flowers help stimulate chi flow, a key aspect in Feng Shui. The East is symbolically linked to the Family and Health area in the Feng Shui Bagua, embodying wood and springtime. Therefore, majorcan peony's enlivening energy may potentially nourish harmony and wellbeing in an eastern-facing space. However, interpretations and impressions of Feng Shui may vary.

The fern-leaf peony exhibits a promising Feng Shui compatibility. Its intricate leaf structure and radiant blooms align well with the energetic flow often associated with the Southern facing direction. However, individual interpretations of Feng Shui may vary. It's therefore important to harmonize this plant with your personal understanding and intuition for an optimal Feng Shui experience.

The spanish poppy corresponds well with the South position, generally associated with the element of Fire in Feng Shui. The passionate energy of this plant complements the symbolism of fame, recognition linked with Southern orientation. The detailed reasoning, however, could vary based on multifarious nuances and individual Qi interpretations.