What would be the correct amount to put in an old 1 lb miracle grow hose end sprayer? 1 lb of Jack's as with miracle gro amount of granules?

Yes I believe that is correct. My bucket says 1 tablespoon per gallon of water. Hope that helps!

Can this fertilizer be used for edilbles like tomatoes?

Yes, you can use this for edibles. It is my favorite for broccoli. I'm assuming you're concerned with toxicity to humans. It is strictly a fertilizer and has no pesticides or herbicides. Also, the nitrogen content is low enough so that it would not produce the excess foliage in tomato plants as could be a problem with a fertilizer with a higher nitrogen percentage. For plants like lettuce that are eaten for their leaves a fertilizer with more nitrogen would be closer to ideal or slightly more economical. I think the only reason that this fertilizer cannot bear the OMRI organic seal is that it uses a chelating agent called EDTA to enhance the absorption of some minerals. EDTA is also used in toothpaste, cosmetics, as a food preservative, and in EDTA therapy. Unless you are trying to get certified as an organic grower, I see not reason not to use Jack's.

Is this 4lb, or 1lb? the bucket shows 4lb, but the description says 1lb??

Good question. I was wondering the exact same thing. However, if you add it to your cart I see it shows 4 lbs. So it should be a 4 lbs container.

How many pounds in the package?

Yes, it is four pounds. I have also bought a 25-lb bag from A. M. Leonard, but the shipping cost almost as much as the fertilizer. If you have a lot of plants or a fair sized garden, buying bigger could save some money. Also, as long as Jack's continues to use potassium sulfate as the potassium source it will be one of my preferred all purpose fertilizers. Similar products use much cheaper potassium chloride as their potassium source and that will degrade the taste of some vegetables.

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J R Peters Jacks Classic No.4 10-30-20 Blossom Booster Fertilizer - 51064

J R Peters Jacks Classic No.4 10-30-20 Blossom Booster Fertilizer - 51064

Product ID: 429398697

Details

Brand
Jack's Classic
Item weight
4 Pounds
Item form
Powder
Specific uses for product
Plant Growth
Global Trade Identification Number

⚡Feeds through roots & leaves for fast absorption

🌸10-30-20 NPK for ultimate bloom power

🌿All-natural ingredients for eco-friendly growth

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VT10342

Duties & taxes included

In stock

Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌺 Unlock your garden’s full bloom potential—don’t let your flowers miss out!

DUAL ACTION FEEDING - Maximize nutrient uptake by feeding both roots and leaves, accelerating growth and color intensity.
ECO CONSCIOUS GARDENING - Crafted with all-natural ingredients, supporting sustainable and healthy plant development.
EXPLOSIVE BLOOM FORMULA - Boost your garden’s flower count with a professional 10-30-20 nutrient ratio designed for vibrant, abundant blossoms.
QUICK DELIVERY QUICK RESULTS - Ships fast so you can start transforming your garden into a floral masterpiece without delay.
VERSATILE PLANT COMPATIBILITY - Perfect for a wide range of indoor and outdoor flowering plants like Geraniums, Begonias, and Marigolds.

J R Peters Jacks Classic No.4 10-30-20 Blossom Booster Fertilizer is a professional-grade, all-natural formula designed to dramatically increase flower production and color vibrancy. Suitable for both indoor and outdoor flowering plants, it feeds through roots and leaves for rapid nutrient absorption, ensuring lush, vibrant blooms. Packaged in a convenient 4 lb box, it’s the go-to choice for gardeners aiming for spectacular floral displays.

Specifications

ASIN	B00JDRWFF4
Brand	Jack's Classic
Brand Name	Jack's Classic
Coverage	Medium
Customer Reviews	4.8 out of 5 stars 2,183 Reviews
Global Trade Identification Number	00671341510642
Item Form	Powder
Item Weight	1.81 kg
Item form	Powder
Item weight	1.81 kg
Manufacturer	JR Peters
Model Number	JRP79060
Specific Uses For Product	Plant Growth
Specific uses for product	Plant Growth
Target Species	Flowering Plants
UPC	671341510642
Unit Count	64 Grams

Reviews

A**R

Good

6.12.2025

S**U

Qualite bonne ,mais prix plutot elever pour la quantite

Le produit se dissous tres bien dans l'eau si on compare par exemple a l'engrais miracle grow . Le poudre est plus fine et efficace. Cependant le prix pour la quantite est selon moi beaucoup trop elever tanant compte de la superficie de mon jardin et le dose recommander soit de 1 tbsp(15ml) par gallon ,j'en ai meme pas assez pour faire 2 arrosage. Alors plus de 45$ en engrais par arosage me semble en peut exagerer. Par contentre pour les petites plantention ce produit peut etre enviable

14.09.2018

B**S

Growers must have

22.03.2026

D**E

Want more flowers?

10.06.2025

C**N

It does exactly what they say! Boom! Flowers!

10.06.2025

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