General Information

Do not apply this product through any type of irrigation system.

NOTE: Gibberellic Acid is an extremely potent plant growth regulator. For best results, read all directions for use thoroughly. Consult your local experiment station specialist, distributor, or the Nufarm agricultural specialist in your area for the spray schedule best suited to your conditions.

Discard any unused spray material at the end of each day. Prepare solution concentrations by mixing the required amount of product with water only in a clean, empty spray tank. Refer to individual crop sections and rate conversion tables provided in the labeling for the amount of GibGro to be applied.

Use only as directed. The label should be read thoroughly and understood before making applications.

Effectiveness requires that all parts of plant or crop must receive spray or desired result will not occur, so spray thoroughly. When a range of rates is indicated, use the concentration and spray volume recommended locally.

Data concerning the compatibility of GibGro with other agricultural compounds is not available, except where specified.

Refer to the label regarding tank mix information.

Limitations, Restrictions, and Exceptions


(All states except California) To reduce flowering and fruiting in young stone fruit trees in order to minimize the competitive effect of early fruiting on tree development: Apply a single application during the period of flower bud initiation for the following year. Use sufficient water to achieve good coverage of the canopy. A Nufarm representative or local horticulturist can provide information on timings and rates applicable to cultivars in your area.

NOTE: Do not spray trees in the first year. Treat trees in the second season to reduce flowering in the third season and treat again in the third season if a reduction in flowering and fruiting is desired in the fourth season. Do not treat trees the year before desired harvest. Only apply to trees that are in good physiological condition.

Restricted Entry Interval

4 hours