Can you give us a little more to go on? What sort of jasmine is it? Does it have a label with its botanical name on? One possibility is that it was greenhouse raised and needed hardening off before going out into your garden. A stressed plant will sacrifice flowers. They are dispensible. But what do the leaves look like? And what is B-1, please?

I have a white potato. Also called a Jamsine. Received from friend. White flowers and frangrant. Planted in rocky soil Maybe 1/2 inch. Growing in a sunny location. Live along the coast in California. Also have a pink jasmine has a stronger fragrance. Does not grow as fast. I think leaves are smaller. Butboth are being grown on a chain link fence. White potato seems to grow upward and horizontally very well. thank you. good luck