A (nearly) complete list of perennials that can be valued for more than just their flowers. The plants in this article have shown exemplary foliage color, variegation, or other unique characteristics that keep them interesting even when not in bloom.
The water stable isotope ratio (i.e., hydrogen and oxygen stable isotope ratio of water) is commonly used as a very effective tool to trace the origin of freshwater uptake by plants, since after plants take up water through their roots, it is largely unaffected by isotopic enrichment due to...