The teddy bear cholla exudes a sturdy, resilient energy, mirroring the qualities of longevity and stability. When placed in the South, it can enhance recognition and fame due to its spiky appearance, symbolizing 'rising above' the norm in Feng Shui.

In Feng Shui, the sweet scabious plant is thought to harmonize with South-facing spaces. The plant's flowers bloom with an intensity that mirrors the energy of the South, replete with fire elements and raw, passionate vitality. However, remember that Feng Shui practices can vary and your individual sensorial resonance with the plant must also be respected.

The bearded bellflower may harmonize well with the Southwest direction. The plant's gentle and vibrant energy may complement the earthy Yin that characterizes this direction, thus facilitating the nurturing of relationships and love. However, the impact may vary largely from person to person and by location.

The tom thumb plant, in the realm of Feng Shui, is perceived as a small dynamo of positive energy. Positioned towards the Northeast, it is thought to stimulate one's spiritual growth and wisdom, although the effects can be idiosyncratic. Due to its springing nature and compact size, it subtly imbues a space with prolific energy, in a harmonious balance, befitting the Earth element associated with the Northeast. Please remember that this description could react in diverse ways based on different individual elements.

The delicate violet orchid integrates well with the energetic patterns of the South-facing direction. This concept is based on the belief that the dainty hues of the delicate violet orchid harmonize with the Yang energy generally associated with the South, promoting a balanced confluence of positive energies. Remember, Feng Shui is often subjective and should be tailored to individual spaces more than the primal directives.

Roseroot stonecrop holds an uncanny harmony with Feng Shui. Radiating a burst of innate Earth Energy, it complements spaces aiming to achieve balance and stability. A South facing direction could be a prime spot, as the nature of Fire element in South fuels the strong Earth vibe of roseroot stonecrop, creating a symbolic cycle of energy rejuvenation.

The rehmannia shows a harmonious correspondence with the Southwest direction when positioned thoughtfully, as Feng Shui principles suggest this area harbours the energy of love and relationships. This is due to the plant's portrayal of growth and renewal, thus potentially enriching these sections of one's life. However, interpretations may vary, reflecting the fluid nature of Feng Shui.

The aztec tobacco aligns intriguingly with Southern-facing arrangements, potentially owing to its hardy and robust nature -- qualities often celebrated in Southern Feng Shui applications. This compatibility, however, may be perceived differently depending on individual Feng Shui interpretation and application.