Toothache grass is a curious choice in the palatial world of Feng Shui, evoking intrigue and a nod towards acceptance. Nestled in the Northeast, it may channel in divination, often associated with Earth element which is conducive to learning and self-cultivation. Nonetheless, individual experiences may vary, reflecting the mysterious, yet profoundly impactful aspect of this poignant practice.

The tree bean holds a remarkable compatibility with the Southwest direction. This observation is based on the Feng Shui principle of attracting auspicious energy when placing plants in the Southwest. The hardy nature of tree bean aligns well with the Earth element predominant in this direction, creating a balanced and harmonious atmosphere.

The chinese box, with its stabilizing form and reflective green color, is often seen as an enhancer for tranquility and stability in Feng Shui. Especially compatible with Southwest facing direction, its year-round vivid shades can nourish the Earth-element centric area, foreseeably contributing to positive aspects in romance and womanhood. However, adopting it should also depend on your personal perceptions of calm and harmony, due to the subjective essence in Feng Shui's application.

The harford's tree poppy blends harmoniously with Feng Shui principles, emanating a calming, grounding energy, ideal for nurturing serenity. It matches well with a West-facing setup, as the setting sun resonates with the vibrant yellow of its flowers, enhancing the space's balance and positive energy flow. Yet, one must remember that Feng Shui is personal and varies with individual perspective.

The aquatic fern is subtly compatible with North-facing settings due to its love for water and subdued light. According to Feng Shui, North is governed by the water element and favors plants that don't require intense light, like the aquatic fern. However, remember Feng Shui outcomes can vary individually based on multiple interconnected factors.

The common fishhook cactus has a unique Feng Shui profile. Some authorities opine that its sharp spines resonate with Northeast facing homes, symbolizing protective chi energy. Its distinctive form may, however, be seen as too aggressive by some. The final call, as always in Feng Shui, rests with the individual occupant.

The anchored water hyacinth has an interesting relationship within the context of Feng Shui. This aquatic flower is known for its vibrant essence and brings a unique energy to any space. Its compatibility with the North direction is seen favorably, as water rules this sector in Feng Shui, harmonizing perfectly with the water-dwelling nature of anchored water hyacinth. However, remember that the experience and interpretation can always vary significantly based on personal perception and individual circumstances.

The pilgrim iris aligns harmoniously with the North direction, often associated with career and life path in Feng Shui. This plant's gentle yet tenacious nature subtly invigorates the North's Water element, fostering growth and resilience.