Shortstop (paclobutrizol)


4th Generation Ultra-fine Molecule

Shortstop (Paclobutrazol) is a soil-applied tree growth regulator which controls growth in the crown by up to 90%. The tree grows more slowly, requires less pruning and can allocate resources to root, storage and defense systems. Paclobutrazol can reduce chlorosis, control growth, prevent drought stress, and aid trees affected by construction damage

At a Glance: Shortstop® is a systemic plant growth regulator that slows aboveground vegetative growth by inhibiting gibberellin biosynthesis for use on trees. Shortstop is most effective when applied to the soil near the base of the tree either by soil injection or with basal soil drench.

Product Name: Shortstop®

Active Ingredients: Paclobutrazol 22.3%

Product Sizes & Part Numbers:                

  • Shortstop® 1/2 Gallon: (040-1205)
  • 1 Gallon: (040-1200)
  • 1 Gallon case of 4: (040-1210)


Short stop app rates

Additional information


Case of 4 – 1 gallon, 1 gallon, 0.5 gallon