Hi, I'm hoping someone can help. I recently dug up an old clematis in the back garden which had been in about 15 years. When I dug it up the soil underneath was grey. This also happened when I dug up what I call Golden Rod in the front garden many of the stems had fused together and I wondered if this was caused by the grey type soil although the clematis was ok just not flowering as it always had. Any help would be appreciated.