Pampas Plumes Not Seen Yet
Last year my Pampas bush performed nicely with about 20 plumes. This year I don't see any plumes. The plant itself is doing well Where are they? Rick Stagecoach, NV Aug 15
Certified GKH Gardening Expert
Often, this has much to do with pruning. If it is not pruned, pruned improperly, or at the wrong time, then it will inhibit flowering.
These article will help: https://www.gardeningknowhow.com/ornamental/foliage/pampas-grass/growing-pampas-grass.htm