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 facilitate harvest, increase yield and improve quality of fall and over-winter spinach: Apply a single spray 10 to 18 days before each anticipated harvest on fall or overwinter spinach, ideally when daytime temperatures are 40° to 70°F and during early morning hours when dew is present on crop. Use in 10 to 50 gallons of water per acre by ground sprayer or in a minimum of 5 to 10 gallons of water per acre by air. When applied to promote growth of second cutting, wait until some regrowth has started before spraying. Maximum benefit from GibGro is obtained when below normal temperatures predominate following application and growth would be otherwise slowed in untreated spinach.

NOTE: Since Gibberellic Acid can promote bolting, do not apply to spinach after the mid-winter period or if temperatures may be expected to exceed 75°F within several days of application. Do not apply on spring-planted spinach.

Restricted Entry Interval

4 hours