Digitalis, Common Foxglove, Lady's Glove 'Camelot Lavender'

I bought 3 of these in 2006, they said perennial on the pots. I planted them on the west side corner of my house, because the label said ...Read Morepart sun so this seemed appropriate. Well the leaves started turning brown and mushy, as soon as the temps got hot. The plants kept sending up new flower stalks and bloomed well, but the flowers didn't seem to last long and were very messy and noticeable as the fell all over the leaves, which at first was what I thought was the reason for the leaves having problems. I would notice that as soon as the flower stalks had a good amount of blooms open that most often they would fall over and then I'd have to cut them back. (High maintenance) By the fall I had given up on keeping them tidy and I decided to move them to a bare spot that I had from some annual impatiens, to see if they would do better with part shade. I left the seed pods on the plants, and in 2007 I have noticed a ton of babies! It looks like the original plants grew back, but as of now they still have not bloomed and the growth looks more like the seedlings, than like the plants looked when I purchased them. Leading me to believe that this is in fact a biennial not a perennial, and the old plants just held the seeds in the spot they had been. I have seen seeds of this variety for sale and advertised as flowering the first and second year, but the seedlings I have look no where near ready to flower. Maybe that is only for warmer zones than my border 5A/6B. I can't say if they have done better in their new location as of now, but I am hoping they will be worth the trouble next year.