On Sale

24% Off

Jack's Nutrients - Bloom 10-30-20 - Enhance Flowering and Bud Growth

from $33.95

~~$44.95~~

Boost your plants' flowering power with Jack's Nutrients - Bloom 10-30-20, featuring a trusted 1:3:2 major nutrient ratio. For over 70 years, Jack's Professional growers have relied on this soluble...

14% Off

Jack's Nutrients - Cal Nit Part B - Soluble Calcium and Nitrate Nitrogen

from $29.95

~~$34.95~~

Complete your nutrient regimen with Jack's Nutrients - Cal Nit Part B, an essential component of a two-part nutrient system. This formula provides a highly soluble and readily available source of c...

14% Off

Jack's Nutrients - Epsom Salts Magnesium Sulfate (1kg) - Essential for 3-2-1 Program

$29.95

~~$34.95~~

Enhance your nutrient regimen with Jack's Nutrients - Epsom Salts Magnesium Sulfate (1kg), a vital component of the Jack's 3-2-1 program. This high-quality magnesium sulfate provides essential micr...

14% Off Sold Out

Jack's Nutrients - Finish 7-15-30 - Optimal Formula for Final Growth Stage

from $29.95

~~$34.95~~

Ensure your plants finish strong with Jack's Nutrients - Finish 7-15-30, specifically formulated for the final growth stage. This unique formula provides very low nitrogen, high phosphorus, and ver...

14% Off Sold Out

Jack's Nutrients - Part A 5-12-26 - Optimized Formula for Vegetative Growth

from $29.95

~~$34.95~~

Experience enhanced vegetative growth with Jack's Nutrients - Part A 5-12-26, an improved formula designed for general vegetative growing. This redesigned blend provides purely soluble and availabl...

14% Off

Jack's Nutrients - RO Water - One-Part Blend for Low Alkalinity Waters

from $29.95

~~$34.95~~

For the purest growing conditions, choose Jack's Nutrients - RO Water, a one-part nutrient blend specifically designed for crops grown in very low alkalinity waters such as reverse osmosis (RO) wat...