The eastern hemlock subtly aligns with the tenets of Feng Shui, contributing to boosting energy levels and general well-being. Its affinity for Northeast-facing spaces results from its inherent association with wood element, which tends to invigorate growth and renewal energies, amplifying positive qi flow in such areas. Remember, the interpretation of Feng Shui can be very personal and individual experiences may vary.

The salal is believed to invite a harmonious and serene energy, a characteristic fit for Feng Shui dynamics. Resonating with the calmness of the North, salal aids in fostering tranquility. The reason behind this compatibility is its subtle symbolization of longevity, ideal for quiet introspection catered by Northern energy. Remember, these observations are broad and personal experiences with Feng Shui may differ.

The slippery elm is considered relatively harmonious in the context of East-facing layouts. In the realm of Feng Shui, East is associated with the wood element, which coincides with the robust nature of slippery elm. While it's a subtle and subjective area, some might find it adds balance and promotes growth energy. This analysis is speculative and should be adjusted according to individual sensibilities.

The angular solomon's seal nurtures potent Yin energy, harmonizing well in East-oriented spaces as it mirrors the Sunrise's nurturing aspect. However, the manifestation of this balance can vary in intensity based upon individual settings, suggesting the mercurial nature of Feng Shui.

The crevice alumroot's resilient nature and modest bloom exudes a steady and harmonious energy, which in Feng Shui, is deemed complementary with steady and healthy relationships. Particularly favorable when placed in Southwest-facing spaces, it is believed to nourish the Earth energy prevalent in this direction, enhancing balance and harmony.

The baboon's cucumber depicts strong indications of resilience and growth. Highly compatible with a North-facing placement, the logic lies in the plant's inherent ability to sustain under various conditions, reflecting Feng Shui's water element that reigns over North. However, its Feng Shui suitability may be interpreted divergently by different individuals in diverse contexts.

The annual phlox manifests harmonious energy when placed in a South facing area of the home. This is largely attributed to the plant's vibrant color, which resonates perfectly within the fiery essence attributed to the South direction in Feng Shui practice.

Water lettuce is believed to bring tranquility and flow in the Feng Shui practice, owing to its water-based existence. Facing North, it is seen as a catalyst for career progression since North is associated with water elements. However, keep in mind, Feng Shui is considerably personal and results may vary.