In need of a regular drink Hibiscus rosa-sinenis are liable to drop lots of developing buds when their supply of water is fluctuating especially when stressed on hot summer days. At this time of year however when hot days are often followed by cool ones, they also react by doing the same. The plants are busy putting all their energy into producing new leaves so flower production comes second place. Though some varieties are not as susceptible to this phenomena as others, a regular supply of fertilizer which is not too high in nitrogen can limit its occurrence. Insects play no role in bud drop and the flower stems have not been chewed off by some critter.
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