Potash Fertilizer
Potash fertilizer that supplies the potassium plants use for blooming, fruiting, and root strength. Simple garden potash for easy feeding.
Use it as a targeted supplement alongside your normal feeding program, following the label rate so you can add the specific nutrition your plants need without complicating the routine.
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Potash Fertilizer with a straight 0-0-10 analysis plus sulfur — pure potash, no nitrogen or phosphorus, made to strengthen plants for flowering, fruiting, and stress tolerance. Potash is the source form of potassium, the nutrient behind fruit quality, sturdy growth, and a plant's ability to handle heat, drought, and cold, and this delivers it directly without adding leafy growth.
How to Use Potash Fertilizer
| Method | Amount | How Often |
|---|---|---|
| Watering can | 2 Tbs (30mL) per gallon of water | Spring & Summer: every 1-2 weeks |
| Watering can | Same dilution | Fall & Winter: every 4 weeks |
| Hose-end sprayer | Set dial to 1 oz (30mL) setting | Spring & Summer: every 1-2 weeks |
| Leaf misting (optional) | 1 tsp per quart (32 oz) of water, spray on leaves | every 1-2 weeks |
Use as a potassium supplement alongside your regular feeding, not in place of it — with no nitrogen or phosphorus, this targets potassium specifically.
What's Inside
The 0-0-10 analysis is potash alone — 10% soluble potash, with no nitrogen or phosphorus — for plants that need more potassium. "Potash" is the traditional name for the potassium source in fertilizer, and potassium is the nutrient that regulates water movement, builds fruit quality and sweetness, strengthens stems and cell walls, and helps plants tolerate heat, drought, and cold. A potassium shortfall often shows as yellowing or scorching along the edges of older leaves, weak stems, or poor fruit, and this targets exactly that.
Beyond NPK: sea kelp (Ascophyllum nodosum) for natural growth compounds that aid uptake, plus 2.0% sulfur, with the potash supplied from muriate of potash and sulfate of potash. This is a deliberately focused potassium supplement, not a complete fertilizer — there's no added nitrogen, phosphorus, or micronutrient package. Use it to correct a potassium deficiency or to support fruiting and stress tolerance in season, alongside a balanced fertilizer that covers everything else.
Made For
Built as a potash supplement for fruiting and flowering plants and for correcting potassium deficiency — tomatoes, peppers, cucumbers, fruit, and any plant showing scorched leaf edges or weak fruit — used alongside a complete fertilizer.
Problems It Solves
- Yellowing or scorching along the edges of older leaves
- Weak, floppy stems
- Poor or low-quality fruit
- Plants struggling with heat, drought, or cold stress
FAQs
How often should I use potash fertilizer?
During spring and summer, apply every 1-2 weeks with 2 Tbsp per gallon in a watering can, or use the hose-end sprayer on the 1 oz setting. In fall and winter, cut back to once every 4 weeks. Because this is straight potash with no nitrogen or phosphorus, use it as a supplement alongside your regular complete feed, not as the only fertilizer, and mainly when a potassium boost is what the plant needs.
What's the difference between potash and potassium?
They're closely related terms. Potassium is the actual nutrient plants use; potash is the traditional name for the potassium-supplying material in fertilizer, and the 'K' value on a label is measured as soluble potash. In practice, a potash fertilizer and a potassium fertilizer do the same job — supplying potassium. This product delivers 10% soluble potash from muriate and sulfate of potash, both standard, effective potassium sources for plants.
What are the signs my plant needs potassium?
The classic sign is scorching or yellowing along the edges and tips of older, lower leaves while the centers stay green — potassium moves to new growth first, so deficiency shows on older leaves. Weak stems, poor fruit quality, and low stress tolerance are others. If you instead see uniform yellowing of whole leaves, that's nitrogen, and interveinal yellowing points to magnesium or iron, so match the pattern to the right nutrient before treating.
Can I use this as my only fertilizer?
No — with 0% nitrogen and phosphorus, it isn't a complete feed. A plant fed only on 0-0-10 would run short on nitrogen for growth and phosphorus for roots and flowering. Use it to correct a potassium deficiency or to support fruiting in season, paired with a balanced or nitrogen-containing fertilizer. It's a targeted supplement for the productive stage, not a standalone diet for the plant.
When will I see results?
Potassium deficiency symptoms on existing leaves won't reverse, but new growth comes in stronger, and fruit developing after feeding shows better quality over the following weeks. Stem strength and stress tolerance improve gradually as the plant takes up potassium. The clearest results come across a full fruiting cycle of consistent feeding rather than immediately.
Related Products
Potassium Fertilizer Sulfate Of Potash Phosphorus & Potassium Fertilizer