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

Orchids need high nitrogen & special micronutrient formula when potted in porous fibres, fir bark & rock. Orchid Special formula focuses on vegetative growth stage & assures the plant’s requirements for nitrogen are met as new leaves develop & mature.

Jack's Citrus FeED 20-10-20 is designed to provide the optimum combination of nutrients needed by plants in the citrus group. The enhanced micronutrient levels will help produce vibrant green leaves, strong branches & more fruit.

Jacks Classic Houseplant Special 15-30-15 is an indoor houseplant fertilizer designed for use on all foliage & flowering plants. It keeps indoor plants vigorous & green.

Jack's All Purpose 20-20-20 is a balanced formula. It can be used in a variety of growing material, in almost any stage of plant growth, as a constant or periodic liquid feed, alternating with water to provide the plant with a boost of balanced nutrition.

Jack's Clone will help promote strong, & fast root growth & expansion. Best used for fertilizing young seedlings, transplants, clones & newly set rooted cuttings.

Jack's Ultraviolet provides a serious boost of available phosphorus. The primary goal of this formula is to assist in shutting down the vegetative growth stage of the plant & stimulate a switch to the reproductive or flowering phase.

Jack's Part A formula for vegetative growing is built with purely soluble & available nutrients to allow maximum flexibility. A balance of macro, secondary & micronutrients delivers a combination of nutrients suitable for all environments & crops.

All Purpose 20-20-20 is considered the industry standard of general purpose fertilizers by professional growers. It feeds both through the roots & the leaves.