The canada yew exhibits a high synergy with the north direction. This is because of its association with the water element which North holds in Feng Shui. Nevertheless, user discretion is advised, as Feng Shui experience varies individually.

The elephant's ear is mixed in its compatibility with feng shui. With an intricate nature, it's believed to channel chi in unique ways. As for location, a North-facing position is preferred. This relates to feng shui notions that the North symbolizes career growth and the elephant's ear's sizable ears, in iconography, are often associated with attentive listening - an asset in professional advancement.

The silver fir mirrors a strong energy, harmonizing effectively with the Northwest-facing direction. Its tall and majestic structure is considered to resonate with the metal element associated with the Northwest, promoting stability and resilience. Nonetheless, different interpretations and conditions may affect the perceived energy flow.

The water wattle harbors a mysterious interaction with the North direction in Feng Shui. Lovers of cosmic harmony extol its ability to create a balanced ambiance, possibly due to its year-round greenery, embodying the Water element - a key influence of North-facing scenarios. However, this observation is but one view in the grand tapestry of Feng Shui interpretation, inviting individual experience to play its part.

The pink rain lily exhibits suitable compatibility in Feng Shui, especially when placed in the northern sector of your space. The reason lies in the fact that its charming pink blooms resonate with the nourishing water element, predominant in the North, symbolising growth and new beginnings. However, as with many aspects of Feng Shui, individual experiences may vary. It's advised to observe the plant's impact on your personal energy over time.

The brown knapweed is harmonious with the Southwest, a direction symbolizing earth and fertility. There's a natural synergy here, as the plant's earthy tones echo the earth element represented by this direction. However, it’s important to consider that the energy dynamics may evolve with time and personal interaction, honoring the fluidity of Feng Shui.

Bells of Ireland is said to have harmonious vibes in western-facing settings. This viewpoint originates from the interpretation that the plant's upward growth symbolizes prosperity, consistent with the 'Metal' element of the West, signifying wealth in Feng Shui practice. However, the interaction of different Feng Shui principles may vary the outcome, and individual interpretations should be respected.

The silver ribbon fern's slender, cascading fronds resonate with the Water element in Feng Shui. Thus, it has a harmonic affinity with the North, a direction traditionally associated with career and personal journey. However, interpreting Feng Shui can be a subjective process, and one's innate response to the plant is crucial too.