jacks nutrients

Jacks Boost 25lb (10-30-20) *In Store Pick Up Only

Need a Boost of Flower Power? Our 1:3:2 major nutrient ratio has been trusted by Jack's Professional growers for over 70 years. This soluble and available nutrient combination stimulates blooming,...

Jacks Finish 25lb (7-15-30) *In Store Pick Up Only

You've always been told to finish strong. This formula is ideally formulated for this purpose to provide your plants with a very low nitrogen, high phosphorus and very high potassium content to keep...

Jacks Part A 25lb (5 12-26) *In Store Pick Up Only

An improvement on the classic "Part A" formula for general vegetative growing. This redesigned blend is built with purely soluble and available nutrients to allow the grower maximum flexibility...

Jacks Part B 25lb (16-0-0) *In Store Pick Up Only

An essential "Part B" provides a very soluble and available source of calcium in a two-part nutrient system. Contains very pure and completely available calcium and nitrate nitrogen nutrient sources.