The tennessee purple coneflower complements the energy flow of an East-facing setting. Known for its robust vitality, it aligns with the Wood element, dominant in the Eastern aspect. While it's certainly delightful, Feng Shui application varies greatly based on individual circumstances; thus, comprehensive evaluation is always recommended.

The redleaf rose is an intriguing addition to any space, often seen as a detonator of good energy. Specifically, when oriented South, it might draw on its fiery red hues, mirroring the Element of Fire. This could potentially harmonize energies and encourage prosperity, although interpretations can indeed fluctuate with differing Feng Shui perspectives.

In light of Feng Shui, the texas nipple cactus subtly enhances energy flow with its calming green hue and rounded form. Best suited to the Northeast sector of your space, it invites wisdom and self-growth, embodying the earth element, traditionally linked to this direction. Bear in mind, individual experiences may vary as Feng Shui integrates with personal energies in unique ways.

The starry false lily of the valley exhibits moderate Feng Shui compatibility. With a subtle, yet vibrant aura, it tends to harmonize energy flow when placed in northern areas. North symbolizes water, complementing starry false lily of the valley's moisture-loving nature, yet needs subtle energy adjustments for optimal balance. Remember, Feng Shui interpretations may vary by practitioner.

The blue cohosh holds a neutral compatibility with Feng Shui principles. Particularly suited for a West-facing direction, this plant's energy can help enhance metal elements. However, Feng Shui is a complex and deeply personal art, and individual experience may vary widely.

The lluvia de orquideas plant, despite its tropical radiance, harbors subtlety in its Feng Shui contours. It tends to favor a South-facing direction, considered the realm of fame and reputation in the Bagua map. Its exuberance resonates with Fire element, resonating vibrantly with this direction. All these factors, however, should be weighed upon mindfully to plumb the subjective depths of Feng Shui.

Mammillaria’s dense formation of thorns enhances its essence as a protective entity in Feng Shui. Placed in a Northeast direction, which represents personal growth and spiritual self-cultivation, mammillaria seems ideally suited. This, however, is an interpretation and compatibility can vary based on individual experience.

The smallflower tamarisk holds moderate Feng Shui compatibility. Its fine feathery features emanate gentle energy which harmoniously complements the active, energetic vibe of East-facing spaces. Nevertheless, its dynamic nature might not appeal to all, thereby maintaining the complex and elusive ethos of Feng Shui interpretation.