The fishbone Prayer Plant aligns well with Northwest-facing spaces. As per Feng Shui principles, Northwest symbolizes mentor luck and heaven's blessings, attributes that resonate with the plant's undulating pattern and lush green hue. However, it's essential to consider individual circumstances for optimal harmony.

The amazon lily is considered to have a receptive yin energy in Feng Shui. It fosters tranquillity and introspection, which makes it ideal for Northern-facing setups. In the Feng Shui compass, North symbolizes water element and quiet calm, synergizing well with the calming yin energy of the amazon lily. However, as this is subjective and varies among interpretations, it's advised for individuals to use personal intuition with Feng Shui practices.

In Feng Shui, aaron's rod is correlated with ascendant energy and vibrant growth, mirroring the South direction's fiery essence. There is an aligning synergy that, while hard to quantify, is quite potent. However, every scenario differs and one's intuition is the final determinant.

The rose pincushion cactus embodies steadfastness and resilience, making it a suitable Feng Shui companion for those seeking to foster such qualities. Facing Northeast, the plant can reinforce your personal development and spiritual growth, given this direction's connection to self-cultivation in Feng Shui teachings.

The hairspine pricklypear is generally recognized as a harmonizing element in Feng Shui due to its unique formation and color symbolism, often linked with power and wisdom. When placed towards the East, it can inspire growth, health, and family unity, making it auspicious source of positive energy. However, as Feng Shui perception is largely individual, results may vary.

The nopalxochitl displays a potent symbiosis with a Southwest facing orientation. The Feng Shui approach suggests that this direction, associated with love and relationships, finds harmony with nopalxochitl's plump, heart-shaped pads, reflecting a vibrant life force. This, however, is subject to one's personal interpretation of the nuanced Feng Shui wisdom.

The yelloy foxtail lily can promote positive energy when placed facing South. This notion springs from its yellow hue, which resonates with the Feng Shui fire element associated with the Southern direction. Take note, however, these assessments can vary, as Feng Shui interpretations can be highly personal and always open for different perspectives.

The idaho blue-eyed grass balances Yin and Yang, making it generally harmonious for most spaces. Its blue hue epitomizes tranquility and wisdom, aspects coveted in Feng Shui. Particularly when facing North, idaho blue-eyed grass brings wealth and career success; water elements dominate this direction, and the plant's blue eyes symbolize water, enhancing this energy field.