xl 15-15-20 drought special

for soil injection into root areas of plants,
shrubs and trees with humic acid

A prescription-type formula specifically designed to regenerate root during and after drought conditions.
Extremely low in salt, all slow-release nitrogen, very high percentage of humate.
Guaranteed to enhance the recovery of drought-stricken trees and shrubs.

slow release – low salt – chloride free – suspension type formula contains primary nutrients derived from: ureaform, potassium sulfate, monopotasium phosphate, chelate complex and wetting agents for improved absorption and suspension.

guaranteed analysis

Total Nitrogen (N)15.00%
10% Water Insoluble Nitrogen
Available Phosphate (P2O5)15.00%
Soluble Potash (K2O)20.00%

Net weight 30 lbs.

Secondary Plant Foods:
Copper (Cu)0.05%
Iron (Fe)0.10%
Manganese (Mn)0.05%
Zinc (Zn)0.05%
Sulphur (S)3.61%


is formulat- ed for the professional arborist. Because of its high U.F. content it does not dissolve com- pletely, but with strong agitation remains in suspension. Therefore it should only be used with power spraying equipment with good mechanical agitation.

100% of the nitrogen in Drought Special is derived from Nitroform.® This unique Urea- form fertilizer releases its available nitro- gen over the entire growing season. any not released during the first season will carry over to the following year. Nitroform® is non- leaching. Bacteria converts the more soluble fraction of the nitrogen so that 1/3 is released in the first 3 to 5 weeks, the balance over 6 to 12 months.

Low Salt Index: The lower salt index per unit of plant nutrient in each ingredient of a fertilizer, the less risk of crop injury in periods of drought or with localized placement of concentrated fertilizer. Drought Special has a low salt index of 15. The ANSI maximum standard is 50.


Injection holes should be 2 to 4 ins. deep. Injection should begin 6 ins. out from the main trunk or stem, spaced 1-1/2 ft. apart, injection on a grid extending at least 6 ins. beyond the drip line. Apply 150 gals. to each 2000 sq. ft.

Dilution Table

Lbs. of Drought Special per gals. of water
15 100
30 200
75 500

To Calibrate: We suggest that you calibrate your tree feeding needle by finding out how long it takes to inject 16 oz. of solution into a bucket. This will probably take 1 to 2 seconds, count off the seconds and use this same count and cadence while injecting the probe at each point in the soil.


Injection should begin 2 ft. out from the trunk and be spaced 2-1/2 feet apart, injecting on a grid extending beyond the drip line. Apply 150 gals. to each 2000 sq. ft. following the grid method outlined, you should inject approximately 1/2 gal. of fertilizer solution at each point. Based on the 2-1/2 ft. spacing, this will apply 150 gals. of solution. Calibrate as above for 1/2 gal. of solution in bucket.

Trunk Diameter Rate of Application: Use same dilution rates as shown in table. Apply the solution at the rate of 5 gals. per in. of trunk diameter. Using crown spread technique (concentric circles) inject the 150 gals. over 2,000 sq. ft.

Space injection points at 2-1/2 ft. intervals, starting 2 ft. from trunk and extending 2 ft. from trunk and extending 2 ft. beyond drip line.

Five gallons of fertilizer solution per inch of trunk diameter. Example: tree trunk 12″ times 5 gals. + 60 gals. of solution.