Yes, it's possible to get next one Soothe Blom. If you lose your flower, you can get another one from NPC Azalea. You must ask her in this way: hi> lost> yes. Remember! If You want to use these flowers as decorations: you can't complete the quest, you can't have them in your backpack (then the NPC will say you have a flower and you will not get another)
cooldown in which you can get the flower is an ONE hour.