Ipomoea nil buds fail to open
I have an Ipomoea nil, Berry Ice. It has been blooming on and off, beautifully since 1 month.
Yesterday, the one & only flower didn't open. It was around 3 inch long. And today it is shrivelling.
I had a similar problem with Xiong's last year but on a larger scale.
Is this something that happens with this type of morning glory?