1 Pound - Potassium Sulfate - Sulfate of Potash

Works great for the prevention of "yellow shoulder" in tomatoes. Use 1 tablespoon per gallon of water or applied to the soil approx 3 inches from the stalk and watered in. Tomatoes are heavy feeders of potassium and this product will provide it to them. This needs to be applied soon after the plant begins to set fruit.

Excellent quality. Improved the root health of my roses this spring. I only use it once or twice a season with a root drench and about a tablespoon per gallon of water.

Be careful how you use it. I burned a couple vegetable plants up. I love them to death, sometimes, literally!

My pepper plants showed signs of either over watering, over fertilizing, or a potassium deficiency. Over watering ruled out as the soil was not too wet and roots were fine. Over fertilization could have lead to too much nitrogen locking out other mobile nutrients. Signs of potassium deficiency were edges of leaves becoming yellow, then pale, then drying out, moving from old growth up to newer while the center of the leaves remained relatively normal. Mixed one tablespoon of this product to one gallon of water and used as a foliar spray directly onto the leaves. Noticeable improvement within 48 hours. Leaf edges now slowly beginning to green up. Will flush soil on next watering and not use additional fertilizer for a few months. Hopefully regulates nutrients better. If you believe your plant has a potassium deficiency, this product will work assuming that is the problem. And one pound will last a lifetime unless you are running a farm. Be careful ass too much potassium in a foliar spray can damage the leaves. Better to start off with small amounts in mix and increase as needed. Satisfied with product and seller.

The spec sheet for this is available on Alpha Chemical's site and gives some details that might help decide if this is the right product. This is graded as "Standard Fines" with an SGN 28 and UI 12. The high SGN means it's best suited for making granular NPK blends or direct field applications. It is not manufactured for optimal water solubility and is not well suited to the preparation of liquid fertigation or hydroponics. Rather than fully dissolve, it could be more likely to sit in suspension. Hope that helps people avoid being disappointed with the solubility in a hydro setup!

The spec sheet, which you have to go to their website to see, did not list important details about the ppm levels of heavy metals like lead, arsenic, cadium and mercury. It leaves me in the dark. Also when I opened the container it had dark specks in it, so this must be just a technical grade of Potassium Sulfate, which leads me back to my initial concern. If your just going to use this on your lawn and not in your garden or in a hydroponics situation I would not have reservations.

I grow romaine Kratky style and I was noticing some issues on the lower leaves, seemed like a potassium deficiency. I added about 1/16tsp to each gallon of solution and my symptoms were nearly eliminated, I'm thinking another 1/32nd tsp should take care of it. Mixes well, but does leave a little residue... not a big deal. I'm happy with it and I intend to keep using/buying this product.

Great for organic gardening with coco coir.

Très bien - un peu cher par rapport à d'autres sites - mais ils demandent frais de livraison. Produit recommandé pour plants de tomates hydroponiques, Aerogarden. Ajoutent un peu de sucre aux fruits. Marche bien (j'utilise depuis un mois environ). NB pas un engrais complet pour tomates. Juste d'appoint.

Engrais plantes

Worked good

Works

C,est pour prévenir le mildiou sur les tomates