Potassium Nitrate Fertilizer
Potassium nitrate fertilizer delivers potassium and nitrate nitrogen in one clean source. Supports fast nutrient uptake, vigorous growth, and the heavy potassium demand of flowering and fruiting plants.
Why it works:
- 3-0-10 NPK — gently potassium-forward — steady growth with the root and stem strength potassium provides
- All-nitrate nitrogen — the form roots absorb directly, for faster response and lower burn risk
- Gentle liquid formula — mix it into your normal watering, no separate feeding routine
Why buy direct
More than a bottle on a shelf.
- Talk to real plant people. Questions about your plants? Our team makes the formula and answers directly — you're not on your own.
- Made in-house, in the USA. Every bottle mixed and filled by us, not a third party.
- Backed by our Healthy Plants Guarantee. Feed it for 30 days — if you don't see healthier growth, we'll make it right.
- Bundle savings you'll only find here. Pair it with any other TPS formula and ship free over $15.