The effect of planting time on performance of Roselle (Hibiscus sabdariffa) to use in urban green space

Using native plants is one of the most significant strategies to create green landscapes. Using the potentiality of such plants especially herbs which are also eye-catching can make the urban landscapes even more attractive. This experiment was carried out to analyze the effect of planting time on the performance of Roselle (Hibiscus sabdariffa) and was planned to compensate for a part of town management costs as well. It was carried out on March 9th, April 30th, and May 20th, 2013 year in completely Block randomized design (CRBD) with 3 replicates during the year. The results proved that planting time has a significant effect (P <0.05) on such characteristics as the wet weight of bush, the wet and dry weight of boll, 1000 seed weight, total performance as well as harvest seed performance. However, there was no significant effect on dry matter and the dry weight of bush. Although there was not a significant statistical difference between March 9th and April 30th plantings, a comparative analysis on averages showed that a too early or a post-April 30th planting of this plant causes a decrease in the wet weight of both bush and boll, and consequently a decrease in performance.

Hibiscus sabdariffa, Kerman, planting time, urban green landscape.