What Happens When You Keep Hoya obtusifolia At Constant Day Length.

Before I moved my H. obtusifolia from a 14 hour day to a 12 hour day, I lost hundreds of buds. The plant would continually struggle to produce viable buds, but they would yellow and fall off at between 1/8 and 1/4 inch in size. The poor plant wanted desperately to flower, but was simply unable to.