Clematis aren’t continuous bloomers. Sometimes you can get a second round of flowers by cutting it back slightly (removing spent flowers that are forming seed pods). Yould should also feed your clematis with Flower-Tone plants food as soon as the ground thaws in spring and again about 8 weeks later. This will give it extra energy for stronger blooming potential. Th pH will gradually come down as long as you don’t add lime to the area.