Jack's Professional 21-7-7 Acid (25lbs.) plant food Effective Brush Control – works

Effective Brush Control – works on woody plants and vines

is odorless

followed by gradual discoloration and death over time

Jack's advanced formulation uses the highest quality nutrients available

elm spanworm

Jack's Professional 21-7-7 Acid (25lbs.) plant food Effective Brush Control – worksJack's Professional 21 7 7 Acid 25lb. Fertilizer Water Soluble Plant Food Jacks Jack's Acid is a water soluble fertilizer designed to be mixed with water for the most accurate and effective nutrient delivery to the plant. What The Numbers Mean: This is an ideal fertilizer for acid loving plants in the nursery and landscape. Provides a rapid correction of a high pH situation. Unlike other brands, Jack's 21 7 7 Acid and contains no harmful chlorides.