Weak tulip stems
Hello all, can anybody help?! I planted Tulip clusiana last November into a container, the last couple of weeks they began to appear and looked fantastic when they flowered but this was short lived. They rapidly declined, the flower stems began to lose all stability and quickly arched over and eventually turned soft and mushy at the bend. I can’t think of any reason for this, I have never grown this tulip before but all my other tulips are great. Any ideas?