Jack's Fertilizer

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33174
Jacks WSF LX 17-4-17 Pure Water 25 LB Bag 77560
Vendor: JR PETERS INC
UM: BG
Use this Jack's LX blend when you are using a very pure water source. This can be from a Reverse Osmosis filter or a naturally occurring source like rain water. Formulas designers at JR Peters ensured this blend will deliver the desired 4:1:4 macro nutrient ratio along with 3% Calcium and 1.5% soluble magnesium. The potential for pH change with this formula is very little as this formula deliver a Neutral CCE.
For use on: All bedding plants, plugs and young plants and vegetables as finished or transplants
33601
Jacks WSF LX 15-5-15 Ca-Mg 25 LB BAG 77940 (OXIDIZER)
Vendor: JR PETERS INC
UM: BAG
Jack's 15-5-15 is a staple in many grower's fertilizer tool box. This is a truly comprehensive fertilizer with all the macro and micro nutrients in one tank. It can be mixed with other fertilizers in the Jack's LX line, which gives this formula alot of flexibility.
It contains 4% calcium and 2% magnesium (making it an ideal choice for water low in those nutrients), 80% nitrate nitrogen, and micronutrients. Ideal for times when growing conditions are less than ideal or a grower is trying to hold plants at a particular stage of growth.
Potentially basic, this formula will cause the pH in the root zone to rise over time, making this formula ideal for water types that are very pure or low in water alkalinity levels.
For use on: All plants
33602
Jack's WSF LX 21-5-20 All Purpose 77990 25 Lb Bag (Oxidizer)
Vendor: JR PETERS INC
UM: BG
This is the ideal fertilizer for moderate to high alkalinity water. This complete formula keeps calcium, magnesium and phosphorus soluble in concentration giving the grower ultimate flexibility when adjusting their nutrient program. It can be tank mixed with 15-5-15, other Jack's LX formulas as well as calcium nitrate and or magnesium nitrate.
For use on: All bedding and potted plants, can be used for plugs at low rates
33605
Jack's WSF 22-5-16 Mum FeED 25 Lb Bag 77740
Vendor: JR PETERS INC
UM: BAG
Mums are heavy feeders that respond well to additional magnesium, sulfur and iron. Many times though, the iron becomes unavailable as the pH rises. The elevated iron levels found in the exclusive FeED iron chelate system keeps the iron available to the plant even if the pH rises during the crop cycle. The additional 2% Nitrogen in the formula reduces your fertilizer usage by approximately 10%, making this product not only nutritionally effective, but cost effective as well.
For use on: Garden Mums, Iron loving warm weather plants
33611
Jack's WSF 21-7-7 Acid 25 Lb Bag 77130
Vendor: JR PETERS INC
UM: BAG
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 contains no harmful chlorides.
For use on: Acid loving plant in nursery and landscape, such as rhododendrons, azaleas, and evergreens.
33612
Jacks WSF 20-20-20 General Purpose 25 LB Bag 77010
Vendor: JR PETERS INC
UM: BAG
The general-purpose industry standard, 20-20-20 is great for maintaining plants in garden center and growing facilities. It provides fast green-up and great foliar expansion due to the high percentage of ammonium and urea nitrogen plus balanced phosphorus and potassium for excellent root and shoot growth.
For use on: All outdoor grown plants.
33614
Jack's WSF 20-10-20 General Purpose 25 Lb Bag 77840 (Oxidizer)
Vendor: JR PETERS INC
UM: BAG
One of the most popular formulations, 20-10-20 GP has the traditional micronutrient levels needed for general production including propagation and all types of bedding plants. High nitrate nitrogen levels (60% of the total) provides for green foliage and more compact growth.
33615
Jack's WSF 20-10-20 Peat-Lite 25 Lb Bag 77860 (Oxidizer)
Vendor: JR PETERS INC
UM: BAG
The most popular formulation, 20-10-20 Peat-Lite. A traditional 2:1:2 balanced ratio formula with a 60% Nitrate to 40% Ammonical Nitrogen balance. Also will deleiver approximately twice the level of micronutrients as the GP formulation. The additional level of micronutrients provides necessary elements absent from most commercially made peat-lite potting media.
For use on: All greenhouse plants grown in peat-lite mixes.
33620
Jacks WSF 25-5-15 High Performance 25 LB Bag 77900
Vendor: JR PETERS INC
UM: BAG
High efficiency formula designed to maximize your NPK delivery while keeping a balance of macro, secondary and micronutrients for optimum plant growth. Best as a continuous feed for heavy feeding plants in moderate to warm temperatures. Micronutrient levels are comparable to peat-lite formulas. Can be used as a nutrient booster for great green-up for almost all varieties.
For use on: All bedding plants and vegetable transplants
33622
Jack's WSF 15-15-15 Geranium 25 Lb Bag 77020
Vendor: JR PETERS INC
UM: BAG
Jack's Geranium 15-15-15 is well known as Dr. Cari Peters' favorite formula. An ideal fertilizer for geraniums and other neutral pH loving plants. Dr. Cari spent a significant portion of her Masters and PhD program studying the effect of nutritional imbalances in many different types of geraniums. After all that time, she still believes in the simple strength of this formula.
The high phosphorus content promotes strong root growth and bud set in the plant (also, great for pink hydrangeas). The high nitrate nitrogen content (56%) and the general-purpose level of micronutrients help minimize nutritional toxicities on geraniums.
This formula grows fantastic geraniums when you have a good source of calcium already in your water source. Its slightly acidic nature keeps pH on the downward trend without causing pH drop out in the plant root zone.
*Note*--if water source does not have over 40 ppm Ca, or is slightly acidic, growers can use this formula as an alternate with the standard 15-5-15 and still see many of the greening and blooming effects we love from the Geranium 15-15-15.
For use on: Geraniums, marigolds, and other plants with media pH requirements above 6.2.
33626
Jack's WSF 15-0-15 Dark Weather 25 Lb Bag 77190
Vendor: JR PETERS INC
UM: BAG
Jack's Dark Weather formula is one of our most popular when growers are looking for a way to increase calcium into their fertility program. An ideal product for growers who want a non-phosphorus, high nitrate product with calcium. Alternate with 20-10-20 Peat-Lite or use as a "finisher" for flowering plants like poinsettias. This formula has the traditional micronutrient levels needed for general production.
For use on: All plants. Especially useful for plants that have a higher Ca requirement , like tomatoes and poinsettias
33627
Jack's WSF 15-0-15 Dark Weather Peat-Lite 25 Lb Bag 77180
Vendor: JR PETERS INC
UM: BAG
Jack's Dark weather Peat-Lite is an ideal product for growers who want a non-phosphorus, high nitrate product with calcium. The macro nutrient and secondary nutreint levels are very similar to the standard Dark Weather formula, however the biggest benefit you will get when using this formula is the elevated micronutrient levels.
Any prodcut that has the Peat-Lite tag in the name designates that the micronutrient package is elevated to provide a boost of micros when growing in a soilless or "peat-lite" mix.
Alternate with 20-10-20 Peat-Lite or use as a "finisher" for flowering plants like poinsettias. This formula has the Peat-lite micronutrient levels needed for commercially made peat-lite potting media.
For use on: All plants. Especially useful for plants that have a higher Ca requirement like Poinsettias and Tomatoes.
33628
Jack's WSF 10-30-20 Blossom Booster 25 Lb Bag 77160
Vendor: JR PETERS INC
UM: BAG
Use this high phosphorus formulation during periods of bud set to increase number and size of blossoms. Resume use of traditional production fertilizers for the remainder of growing cycle to avoid internode stretch. Great for vegetable production.
For use on: Flowering plants
33630
This product is obsolete.
Jacks WSF 5-12-26 Hydroponic 25 LB Bag 77251
Vendor: JR PETERS INC
UM: BAG
This formula was designed as a base foundation for hydroponic growing. It can be manipulated in such a manner as to provide virtually any combination of nutrient levels desired, providing the highest availability to plants, due primarily to Jack's has proven ability to remain in true solution over long periods of time. Should be used in combination with the 15-0-0 Calcium Nitrate in a two-part system.
For use on: All hydroponic crops, greens, herbs, fruiting crops
33631
Jacks WSF 15.5-0-0 Calcium Nitrate 25 LB BAG 77260
Vendor: JR PETERS INC
UM: BAG
High quality and extremely soluble form of Calcium that is easy to take up by plant roots in a hydroponic environment. This product is used to supplement calcium (18%) and nitrate nitrogen with no micronutrients added. It can be used to raise media pH and to reduce ammonium, sodium and high micronutrient levels.
33-20319
Jack's WSF 20-3-19 Petunia FeED 25 Lb Bag 77770
Vendor: JR PETERS INC
UM: BAG
This product is specially formulated for those chronically iron-hungry crops such as petunia, calibrachoa, bacopa and others. The original Jack's FeED product designed with all three iron chelates, EDTA, DTPA and EDDHA. Our proprietary blend of iron level is unmatched by any competitor and guaranteed to deliver iron at a much broader range of pH over the entire crop cycle. This nutrient profile is also paired with a low phosphorus level to help prevent excessive elongation. It is not recommended for use on geraniums or other iron sensitive crops.
For use on: Petunia, Calibrachoa, Bacopa

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