In Feng Shui, the groundsel bush has a questionable compatibility. Its resonant energies may combine elegantly with the nurturing character of the Northeast direction. Its vibrant growth symbolizes enduring vitality, which is valued in Feng Shui, though results may vary depending on individual circumstances.

The blue potato bush aligns well with Feng Shui practices due to its vibrant, oval-shaped leaves symbolizing growth and prosperity. Perfectly placed in a North-facing direction, this plant's blue blossoms are believed to amplify the career and mentoring sector, according to the Bagua map. As with all Feng Shui principles, individual experiences can vary.

In Feng Shui, trident maple is considered to harmonize the energy when placed in the Southeast. This region is associated with wealth and abundance, and trident maple’s strong, yet beautifully balanced form can symbolically stabilize and grow this energy. However, the individual's response to such placement can vary.

Stinking hellebore embodies the essence of release and purification, crucial in Feng Shui for harnessing positive energy. When placed towards the Northeast, it aids in spiritual growth and inner clarity, due to its alignment with the Earth element dominant in that quadrant. Remember, Feng Shui interpretations vary with individual perspectives.

The plant watermelon exhibits a unique affinity with the North direction. This is attributable to Feng Shui principles expressing water's cardinal correspondence with North, which resonates with watermelon's highly water-dependent nature. However, the result might variate according to individual perception as the philosophy of Feng Shui is expansive and subjective.

Tree germander is generally considered compatible with feng shui principles due to its vibrant health symbolizing growth and abundance. Positioned in the Northwest, it may boost the energy of helpful people in your life, as Northwest is traditionally linked to mentor luck. However, individual interpretation in Feng Shui practice may vary.

The wild radish leans towards compatibility with North-facing placements, nurturing a harmonious flow of vibrant energy. This aligns with Feng Shui principles, as North represents the element Water, which can symbolize nourishment and growth, a fitting destiny for this thriving, wilderness-loving plant. However, personal experiences may vary as Feng Shui is a subjective discipline.

The cowslip can influence subtle energies around your living space. In Feng Shui, it's associated with tranquility and harmony, beneficial for creating a serene atmosphere. When positioned in the north direction, it potentially enhances mental clarity as the north is linked with the water element, suggesting fluidity of thought. However, as in all Feng Shui practices, personal experience and comfort should guide final placement.