Viburnum turning black
Hi all. IÂve been reading the forum for awhile (and have learned more here than in any book or at any garden center; thank you!) but am new to posting. IÂll try to be brief.
A couple of weeks ago I planted one viburnum nudum species and one Winterthur about 8 ft apart. The Winterthur was terribly pot bound but otherwise appeared robust. I did the best I could with the roots, planted it, mulched them both lightly with compost, and hoped for the best.
Since then weÂve had rain every 2-3 days, some of it very heavy (twice weÂve had 2" or so). Our soil is loamy sand (more sand than loam) so I havenÂt been very concerned about drainage Â until now. The Winterthur has several leaves that are turning black from the tip to about halfway down the leaf. What could this be? The species is doing splendidly and has new growth.
IÂll be grateful for any advice. Thanks!