Why have 3 clems died in same spot?
I have a couple dozen clematises in my garden, and they're all doing either well, well enough, great, or spectacular --in other words, pretty typical (I think). But there's one exception. There is one spot where I have now just lost the third consecutive clematis in three years. The ones I lost were Ville de Lyon, Madame Julia Correvon, and Venosa Violacea -- nothing very exotic. Madame JC went in in the fall and looked okay going into winter, but never came up this spring. So a few weeks ago, I planted VV, which I had carefully nursed in a pot all summer. We have had cool weather and lots and lots of rain. But she looks dead. There is no green at all. Maybe she'll come back in the spring, but I doubt it based on my experience in this spot.
It's a northern exposure. Two integrifolias (Julii and Sizaia Ptitsa) grow happily near the spot where the viticellas are failing.
The only anomaly here that I can think of is that when I moved here three years ago I removed a yellow climbing rose that wasn't doing fabulously, and I'm no rose fan. I'm sure I got all the roots; I excavated really deeply when I planted VV to make sure this wasn't a problem. Could the rose have left a disease or toxin behind?
Has anyone else had this experience? Any ideas? Just bad karma?