Perennial Plant Growth Regulators
 | PLANT GROWTH REGULATORS SEARCH |
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This database summarizes the results of research trials using plant growth
regulators (PGRs) on over 100 containerized herbaceous perennial
species/cultivars. This summary includes rates found effective in reducing
plant height in published articles, as well as many of our own research
results. Rates listed were tested as spray applications at
label-recommended volumes unless otherwise stated. Foliar spray
applications are tested more often than drenches, presumably due to the
higher labor costs involved in applying drenches in large scale production
areas. The rates listed and precautions/remarks are intended to provide
starting rate information to allow you to establish your own PGR trials.
Where multiple applications of a PGR are suggested, these are generally
applied 10 to 14 days apart. Note: "NR" means the plants were "not
responsive" to a given PGR at the rates listed. (Data compiled by Joyce
Latimer, Holly Scoggins, and Tom Banko, Herbaceous Perennials Program,
Virginia Tech, Blacksburg, VA; last updated: Apr 28, 2006.)
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