Shalom Nitzan,
You didn't mentioned if it is a winter type or a summer type and how long have you got it. The first couple of flowers are usually male and later as the plant grow and put up more strength, it will produce both flowers.
The dry sign of the flowers sounds like sun burnt (?). Is the soil moist ?
I know the temp' in Israel can be easily reaching to 40C, if it is the case, it will help to provide some net to shade the plant and thick mulch to conserve the moisture of the soil. Hope this help

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