The scarlet hedgehog cactus is compatible with the Southern direction, considered the realm of recognition and fame in Feng Shui. Its vibrant scarlet blooms represent the fire element, which is naturally harmonious to South. However, individual results may vary, depending on personal energy and arrangement style.

The black ridge oak harmonizes well with East-facing environments. It's primarily due to the plant's strength and fortitude which resonate with the robust energy of the East. However, subtle variances in individual perception of Feng Shui might alter this understanding.

The cocoplum is intriguingly compatible with North-facing settings. This is often attributed to the plant's perceived grounding properties, which are believed to resonate with the water-based energies usually associated with the North direction. However, Feng Shui interpretations can be complex and personal; one is encouraged to tune with their individual spaces and energies.

The Feng Shui Compatibility of canadian anemone is perceived as promising, attributed to its ceaseless growth and captivating blooms. The plant's orientation toward Northwest is considered harmonious, drawing from Feng Shui's principles of fostering prosperity and unearthed potential. However, personal experiences with canadian anemone will likely add further layers of interpretation to its energy dynamic.

Mock privet, upheld by Feng Shui principles, carries a favorable synergy with East-facing locations. Rooted in its optimistic, verdant hue, mock privet functions as a form of vibrant, life-sustaining Wood Element. This combination naturally augments the universal ch'i in East-facing settings, subtly promoting good luck and prosperity in a nicely balanced way.

The chinese sumac aligns well with the South-facing direction, perhaps owing to its origins in warm Asian territories. This placement promises essential chi energy flow, nurturing wealth and success, although the results can vary widely.

The winged-stem passion flower, due to its majestic wing-like stems, symbolizes ascension and growth. Its presence is believed to harmonize the Qi flow, making it a suitable plant for the South-facing direction. The dominance of Fire element in this direction can be harmoniously balanced by the plant's Wood-properties, thus, there is a sense of compatibility. Yet, remember this analysis may not reflect every scenario, as Feng Shui outcomes are incredibly individualized.

The spiny amaranth aligns well with the western aspect of your space, symbolizing growth and adaptability. Its robust and resilient characteristics are akin to the metal element of the West, often promoting a robust sense of strength within the environment. However, remember this perception varies, reflecting the fluid nature of Feng Shui.