Jack's Classic Professional 20-20-20 All-Purpose Water-Soluble Plant Food with Essential Micronutrients | Ideal for Heavy Feeding Plants in Hydroponics, Greenhouses & Continuous Liquid Feed Systems | 25lb Bag for Indoor/Outdoor Gardening

I've been using Jack's Professional aka Jack's Classic All Purpose 20-20-20 for many years. You can water virtually all of your garden with this fertilizer! I use it for both outdoor & indoor plants. I've even used it to revive part of my yard that was dying! It can also be used in both soil & soilless mediums. If you are unsure on how much you should use 1/2 of recommended dose is a good start. If your plants start to claw you are feeding them too much. If they start to fade in color you can probably feed them a little more. You can also use this as a foliage spray (use about .25 normal dose).If your plants are turning yellow or fading in color this will brighten them back up again!It's a shame this is not sold anywhere where I live.Here's a little info from J.R. Peters site that you might find useful:Jack's All Purpose 20-20-20Just as the name suggests, Jack's All Purpose 20-20-20 is a balanced formula applicable to a variety of growing material. Its 1:1:1 nutrient ratio makes it good for almost any stage of plant growth. The design of the formula uses nutrients that provide strength to the plant, as well as, lush green growth. It can be used as a constant liquid feed or periodic feed, alternating with water or rain to provide the plant with a boost of balanced nutrition.Preferably, it should be used on soil-based media, rather than on soilless media, primarily during warmer months, indoors or in warm-climate regions. These environments allow the roots to take up the nitrogen sources most effectively. Long-term use of high Phosphorus formulas can lead to plant stretch in some plant varieties. Therefore, it is recommended when using this formula over long periods (greater than 3-4 months) of plant growth, alternate with a lower Phosphorous source such as rainwater, calcium nitrate or other lower phosphorus fertilizers.Application of this fertilizer can be used as a root drench or foliar spray. The nutrient package in the All-Purpose 20-20-20 is designed for optimum absorption by the leaves when sprayed at the recommended rates; however, a root drench is just as effective and will leave little to no salt build up in the media.All Purpose 20-20-20 can be used on many types of plants including, but not limited to:Orchids (all varieties) both blooming and in vegetative state Use All Purpose 20-20-20 for ApplesCyclamenHibiscusCitrus treesChrysanthemumsAll bedding plantsHanging basketsMixed containersPetunias & CalibrachoasGardeniaBromeliadsRosesAll types of BerriesSunflowerTomatoesAll vegetablesRegular and Giant PumpkinsHome lawnsCommercial turf grassHay and forage plots-------------------------------------All Purpose 20-20-20 is our biggest seller for home professional grower formulas. It is widely used in a variety of settings from bedding plants, vegetable gardens, fruit trees, nursery materials including, trees, shrubs and container plants. In addition, the All-Purpose 20-20-20 is used extensively in conjunction with spray materials for foliar feeding of ornamental and shade trees, turf and hay field applications in the same manner. It is an excellent material for feeding foliage plants.How to useFor small volume mixingDissolve the following amounts in 1 gallon of water. An injector should not be used.All Purpose1/2 tsp. = 125 ppm1 tsp. = 250 ppm1 tbsp. = 750 ppmWhen using a Siphonex or Hoze-on proportioner1:15 setting E.C.100 ppm = 1.0 oz. 0.64200 ppm = 2.0 oz. 1.28300 ppm = 3.0 oz. 1.92Limit of Solubility in Hot Water = 3.5 lbs. per gallonJack's Fertilizers are made with 100% soluble raw materials that will form a true solution.-------------------------Total Nitrogen (N) 20%2.1% Nitrate Nitrogen17.9% Urea NitrogenAvailable Phosphate (P2O5) 20%Soluble Potash (K2O) 20%Boron (B) 0.02%Copper (Cu) 0.05%0.05% Chelated Copper (Cu)Iron (Fe) 0.10%0.10% Chelated Iron (Fe)Manganese (Mn) 0.05%0.05% Chelated Manganese (Mn)Molybdenum (Mo) 0.0009%Zinc (Zn) 0.05%0.05% Chelated Zinc (Zn)What The Numbers MeanMore professional growers use this product for all their growing needs more than any other formula.A blend of Nitrogen, Phosphorus and Potassium in a 1:1:1 ratio that work well on all plant materials as a general-purpose fertilizer.Fully chelated trace elements. Manganese, Iron, Copper, Boron, Zinc and Molybdenum are the trace or micronutrients. All Jack's Classic® products contain these trace elements. Although they are present in small amounts, they are just as important as the major and minor elements in the growing process.Feeds through the roots and leavesIndoors, it is especially effective on foliage plants to keep leaves green and healthy.The guaranteed analysis on each package of fertilizer tells you how much is in each product. Jack's Classic products contain these elements in a highly soluble form, which means they will go completely into solution in water. When applied to your plants, they will be absorbed and utilized to make your plants grow to their fullest potential.Fertilizer AnalysisPeppers tomatoes20-20-20Container TypeContainers: 8 oz., 1.5 lbs., 4 lbs.Resealable pouch with handle: 10 lbs.All Jack's Classic products come with a free measuring spoon for precise and accurate product application as well as detailed instruction in each container.All Purpose 20-20-20 is our biggest seller for home professional grower formulas. It is widely used in a variety of settings from bedding plants, vegetable gardens, fruit trees & nursery materials (ex: trees, shrubs and container plants.) In addition, the All-Purpose 20-20-20 is used extensively in conjunction with spray materials for foliar feeding of ornamental and shade trees as well as turf and hay field applications, in the same manner. It is an excellent material for feeding foliage plants.