The tree anemone exhibits a potent harmonic energy when placed in a southeast facing direction. Its blossoming white flowers signify purity and peace, echoing the Wood element which dominates this direction in Feng Shui. However, the interpretation of its energy flow can be subjective and personal, serving as a reminder of the complex durability of Feng Shui practices.

The beavertail cactus is deemed a fairly compatible choice based on Feng Shui principles. It flourishes in Southwest-facing space, embodying the attribute of Earth element associated with love and relationships. Yet, due to its spiky nature, it should be placed mindfully to not disrupt the Chi flow. Remember, interpretations vary broadly in Feng Shui.

The windmill bush aligns pleasingly with Northeast-facing spots. In Feng Shui, the Northeast is governed by the earth element, harmonizing with the windmill bush's strong grounding energy. Although Feng Shui principles are profoundly subjective, this plant's low-profile silhouette and resilient nature might resonate well with the Northeast's attributes of personal growth and self-cultivation. Just remember, a space's harmonic configuration must ultimately resonate with your personal energies and perspectives.

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.

Indian mint is generally considered to harmonize well within a Southwest-facing environment. This direction emphasises earth energy which complements the grounding and calmness indian mint imbues. This is, of course, subjective in the realm of Feng Shui, and should be taken as a general approach rather than a definitive rule.

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.