This manuscript investigates the micro-climatic buffering capacity of the naturalized succulent Kalanchoe pinnata as a seasonal micro-refugium for soil macro-invertebrates during severe dry spells in Tahoma, Ghana. Utilizing a rigorous paired-sampling framework (\(N = 20\)), the study quantifies a profound plant-driven "moisture oasis" effect: soil moisture beneath the succulent canopies was roughly four times higher (\(43.56\%\)) than in neighboring exposed controls (\(11.18\%\)). Concurrently, macro-invertebrate population density was over six times greater under the sub-canopy (\(14.35\)) compared to bare ground (\(2.25\)). A strong positive Pearson correlation (\(r = 0.954, p < 0.001\)) proves that localized moisture retention is the primary biophysical mechanism driving invertebrate survival, highlighting a vital, facilitative ecological relationship that helps maintain tropical soil biodiversity during drought conditions.