Hello Gardeners, I’m Amanda McNulty with Clemson Extension and Making It Grow. When I took botany with the my Clemson professor the late Dr. John Fairey, one of the plants we studied was elderberry. Elderberry has an interesting feature – the stems are described as “weakly lignified.” What this means is that the outer portion of the stem is actually woody while the interior is filled with pith. Dr. Fairey told us that in the days before synthetic packing material, elderberry pith was used to