Mustard flower is a bisexual flower or unisexual flower??? Answer fast!!!! Share with your friends Share 3 Jahirul Mazumder answered this Mustard is a bisexual flower. 6 View Full Answer Saba Azmi answered this I think its a unisexual plant but i am not so much sure take help from the experts i am forgotting it -5 Julia answered this Mustard and hibiscus(china rose) are bisexual flowers. Papaya and watermelon bear unisexual flowers. 3 Archit Saini answered this bisexual flower 3 Srishti... Kumari answered this it is a bisexual flower. 4