Ever wonder why those terrific native viburnums you planted are not producing fruit?  You are not alone.  It’s one of the frustrations of gardening ecologically in a world where “cross pollination” is rarely mentioned at local nurseries or garden centers (and forget about the big box stores!).  Some plants, although deemed self-fruitful, may need a “pollinator partner” to bear fruit reliably.
Although potentially self-fruitful, native viburnums are actually pretty self-incompatible and typically require cross-pollination for good fruit production. Two genetically different plants of the same species should be planted in reasonably close proximity.  …