When should I plant gladiolus bulbs to ensure they flourish and produce those breathtakingly vibrant blooms that grace summer gardens? Is there an optimal time frame that synchronizes with seasonal changes to maximize their growth potential? As spring begins to unfurl its tender leaves and the soil warms, might there be certain indicators, such as the last frost date, that could inform the timing of this planting endeavor? Furthermore, is it prudent to consider the specific climate of one’s region, or perhaps the unique microclimate of a particular garden? How critical is it to monitor soil temperatures, ensuring they meet the ideal range for these captivating flowers? Should the choice of planting depth and spatial arrangement also be influenced by the timing of the planting? Ultimately, could these myriad factors collectively dictate whether your gladiolus bulbs will leap into life with vigor or wither beneath the summer sun?