Pruning grape vines is a midwinter job that keeps plants shapely, healthy and fruiting well. Climate change means that grape vines, once the preserve of large conservatories and warmer hemispheres, ...

While they do not take up as many acres as wheat in Oklahoma, grapes continue to be a popular crop in the state. To help growers understand the importance of proper pruning, Oklahoma State University ...

Anthocyanins are important, red, blue, purple and purple-black plant pigments that are widely distributed in the cell vacuoles of flowers, fruits, roots, stems and leaves. 1,2 Grape anthocyanins are ...