Comments on: pruning roundup: what shrubs i prune when

By: Margaret

Margaret — Sun, 27 Feb 2011 23:18:59 +0000

Perfect, Barb -- that's what I suspected you would see/say. As far as fungus on Viburnum, of which there are various kinds I believe, I haven't tried to treat/control it here, no. I see that Clemson has a bulletin that explains some types, their causes and what to do...looks like horticultural oil works for some issues but that sulfur sprays cannot be used on Viburnums, e.g. See if you can determine which issue you are having.

By: Barb

Barb — Sun, 27 Feb 2011 22:10:56 +0000

You certainly asked the right questions – the other branches are smoother bark and have almost no branching than those that are flowering. I’ll mark them now and when the flowers fade, they are going to be trimmed out. Last year we had some sort of fungus on this shrub and on some vibrunums. I plan to spray them when they leaf out – any advice for treating fungus organically? Thanks!
-Barb

By: Margaret

Margaret — Sun, 27 Feb 2011 21:57:49 +0000

Welcome, Barb. Do the twigs that are not blooming look different from the others (bark, how straight/thick they are, the directional they come from/point?). Sometimes on witch hazel and many other grafted shrubs, the rootstock starts sending up stems that need to get cut out completely to the base as they emerge, preferably. Could that be it?