Introducing Shortstop® Plant Growth Regulator for Trees


Shortstop® is a systemic plant growth regulator that slows vegetative growth by inhibiting gibberellin biosynthesis on trees. Shortstop reduces the above ground vegetative growth and changes specific morphological characteristics of the tree plant.

What is Gibberellic Acid?

Gibberellic acid is responsible for the vegetative growth in plants. Reducing its production results in shorter length between internodes of branches and 80-95% less annual branch growth, meaning less frequent pruning and maintenance.

Increased Production of Abscisic Acid and Chlorophyll

Abscisic acid is an inhibitory plant hormone that reduces transpiration to prevent water loss and reduces enzyme production required for photosynthesis, aiding in drought stress management and top-growth production. Chlorophyll allows plants to absorb energy from sunlight and produces green leaves. Increased chlorophyll production results in greater energy optimization and attractive green foliage.

Redistributed Energy & Altering Leaf Physiology  

Rather than expending energy on top growth, trees increase root production, reducing the need for pruning and improving drought tolerance. Expect changes such as thicker leaf cuticles, and smaller stomata.

Enhanced Fine Root Hair Growth 

Shortstop® increases leaf hairs which help reduce water vapor loss in hot, dry weather and may aid in surviving pest attacks. An enhanced root system optimizes translocation of water and nutrients found in the soil, reducing stress and the impact of construction damage as well.

For Best Results

Shortstop® is most effective when applied to the soil near the base of the tree either by soil injection or with basal soil drench.

For more information about Shortstop® Plant Growth Regulator visit or contact us. Are you interested in getting involved in educational events and workshops? Be sure to follow us on Facebook and Twitter.