Optimize the health and vitality of your turf and ornamental plants with Verde K-Mag Plus, a superior blend of essential nutrients designed to support vigorous growth and resilience.
This advanced formulation combines Sulfate of Potash Magnesia with Calcium, the innovative thCa™ acid complexing agent, humic acid, and a specialized soil penetrant to ensure uniform nutrient distribution and improved soil absorption.
Ideal for both stress periods and regular monthly maintenance, Verde K-Mag Plus delivers key nutrients—Potassium (K), Calcium (Ca), Magnesium (Mg), Sulfur (S), Iron (Fe), and Manganese (Mn)—in one convenient application. Its micro-particle design maximizes coverage and effectiveness, promoting lush, healthy, and vibrant landscapes.
Key Features
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Comprehensive Nutrient Profile: Supplies premium Potassium (K), Magnesium (Mg), Calcium (Ca), Iron (Fe), Manganese (Mn), and Humic Acid in one formula.
- Ideal Source of Magnesium and Sulfur: Supports optimal chlorophyll production and improves plant metabolism.
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Improves Soil Health: Effectively leaches excess Sodium (Na) and Magnesium (Mg) from soil colloids, enhancing soil structure.
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pH-Neutral Calcium Supplement: Provides Calcium without altering soil pH, ensuring balanced nutrient availability.
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Micro-Particle Technology: Ensures maximum coverage for uniform nutrient distribution across turf and ornamentals.
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Versatile Application: Perfect for all turf types and ornamental plants, suitable for both stress recovery and routine maintenance.
Benefits of Using Verde K-Mag Plus
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Enhances Turf and Plant Resilience: Strengthens plants against environmental stressors, including drought, heat, and soil salinity.
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Promotes Vibrant Growth: Encourages lush, green, and healthy turf with improved color and vigor.
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Efficient Nutrient Delivery: Advanced soil penetrant technology ensures deeper, more uniform nutrient movement into the root zone.
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Improves Soil Conditions: Reduces soil compaction and enhances nutrient uptake efficiency.
Application Guidelines
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Suitable For: All turf varieties, ornamental plants, landscapes, and sports fields.
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Application Frequency: Use during periods of stress or as part of a monthly maintenance program for consistent results.
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Method: Apply 15-30g per meter square. Apply evenly across the desired area, followed by irrigation to activate the soil penetrant for deeper nutrient absorption.
FAQs
What is K-Mag and what’s in this blend?
It’s potassium–magnesium sulfate (aka langbeinite) combined with calcium, humic acid, a soil penetrant, and the thCa™ acid-complexing agent—giving you K, Mg, Ca, S plus a little Fe/Mn in one product.
What analysis is it?
0-0-8.3 plus magnesium, calcium and iron—formulated for turf and ornamentals.
Why choose K-Mag over standard potash (MOP/KCl)?
K-Mag is low-chloride and brings magnesium and sulfur along for the ride, which is kinder to chloride-sensitive plants and helps chlorophyll production and enzyme activity.
Is K-Mag chloride-free?
Not zero, but very low—K-Mag granular specs list chloride at ≤2.5% max.
Will K-Mag change my soil pH?
No—this blend supplies calcium in a pH-neutral way, so it won’t shift soil pH.
Where does K-Mag come from?
It’s naturally mined langbeinite—a single mineral (K₂SO₄·2MgSO₄) with K, Mg and S in every granule.
Recommended rate for lawns/turf?
Broadcast 15–30 g per m², then water in. Monthly for maintenance or more often during stress.
Can I use K-Mag on cool-season and warm-season grasses?
Yep—safe on all turf types when used as directed.
Is K-Mag good for ornamentals and landscape beds too?
Yes—designed for turf and ornamentals; apply evenly and irrigate after.
Container plants—how much should I mix in?
General garden guidance is ~1 Tbsp per gallon of mix, blended through the media before planting.
Garden beds—what’s a ballpark rate?
Common guidance is ~0.5–1 kg per 9 m² (≈1–2 lb per 100 ft²), mixed into the topsoil pre-plant.
Can I top-dress established plants?
Yes—lightly top-dress, scratch in, and water. Keep within the turf/bed rates above to avoid salt stress.
Is K-Mag water-soluble enough for hydro or foliar?
No—don’t try to foliar-spray or run it in recirculating hydro; K-Mag isn’t fully water-soluble and can precipitate with other nutrients. Use it in soil/soilless media and water in.
Can I dissolve K-Mag to make a stock solution?
It partially dissolves (solubility ~240–300 g/L at 22 °C), but that doesn’t make it suitable for foliar or hydro—precipitation and clogging risk are real.
Does K-Mag help with salty/compact soils?
The blend includes a soil penetrant and is positioned to help leach excess sodium and magnesium from soil colloids, improving structure over time.
What plant problems does K-Mag address?
Yellowing between veins (Mg deficiency), weak stems/poor fruit set (K deficiency), and low sulfur situations—without bumping chloride.
Will K-Mag burn my lawn or plants?
Used at label rates and watered in, it’s gentle; over-application of any salt fertilizer can cause stress, so stick to the grams-per-m² guidance.
When should I apply through the year?
Monthly maintenance is fine; also use ahead of or during heat/drought/salinity stress to keep color and vigor up.
How quickly does K-Mag work and how long does it last?
Granules start releasing once watered in; expect a steady supply over weeks rather than a rapid, foliar-like hit. (That’s by design for turf/bed maintenance.)
Can I mix K-Mag with other fertilizers?
Yes for most dry blends in soil. Avoid dissolving with calcium-based or phosphate fertilizers in the same tank—calcium + sulfates or Ca/Mg + phosphates can precipitate (gypsum/scale).
Is K-Mag safe with organics like composts, manures, guanos?
Yes—works well alongside organic matter; just don’t exceed total K/Mg needs. Mix through soil or top-dress and water.
Is K-Mag OK for fruit trees, palms, and flowering shrubs?
Yes—K and Mg support fruiting/flowering; apply modest top-dress rates and water in. (Follow turf/bed rates as a ceiling).
Is K-Mag pet/people safe?
K-Mag SDS shows no GHS hazard classification. Still: don’t ingest, avoid dust in eyes, and store away from kids and pets.
Does K-Mag stain concrete or decking?
It can leave mineral dust marks if left dry; sweep off hard surfaces and water the lawn/bed after application.
How should I apply on an existing lawn?
Set a spreader for ~15–30 g/m², walk in overlapping passes, then immediately irrigate to activate the soil penetrant and move nutrients into the root zone.
How does K-Mag compare to Epsom salts?
Epsom salt is just magnesium + sulfur (no potassium). K-Mag gives Mg + S + potassium in one granule, which is often what lawns/flowering plants actually need.
Any storage tips?
Keep it dry, sealed, and off the floor—granules can pick up moisture from the air; normal PPE (gloves/eye protection) is recommended when handling dusty material.
Can I use K-Mag right before or after seeding/sodding?
Yes—light applications at the low end of the rate range are fine; always water in well after spreading.
Will K-Mag play nicely with other Dr Greenthumbs soils and kits?
Yes—use it as the potassium/magnesium/sulfur + calcium “tune-up” on top of our soils and programs; just count total K/Mg so you don’t double-stack.
Is there any iron/manganese in K-Mag?
Yes—this formulation includes Fe and Mn along with K, Mg, Ca, S and humic acid.
What’s the best watering practice after spreading?
Give a light to moderate irrigation immediately after application to kick in the soil penetrant and distribute nutrients evenly into the root zone.
I run a reel-mowed, low-cut lawn—safe to use?
Yep. Keep on the lower end of the rate, water in, and avoid overlapping heavy passes to prevent salt spotting.
Can I blend K-Mag into a homemade potting mix?
Yes—use the container guideline (~1 Tbsp per gallon of mix), blend evenly, and don’t add extra K sources unless your soil test calls for it.
How do I know if I need more potassium or magnesium?
Leaf symptoms help, but a soil test is the honest way to set rates—look at exchangeable K and Mg and balance accordingly.
Any reason to avoid during extreme heat?
You can use it in heat, but irrigate right after—monthly “little and often” is smarter than big dumps in summer.
What about mixing in a spray tank with calcium nitrate or MAP/DAP?
Don’t—calcium + sulfate or Ca/Mg + phosphate mixes are notorious for forming insoluble precipitates that clog lines. Keep this as a dry soil application.
Is K-Mag suitable for sports fields and high-traffic turf?
Yes—the micro-particle design and monthly program are built for resilient color and wear tolerance on sports turf.
Any quick rule for new users?
Start low (15 g/m²), water in, and watch plant response over 2–3 weeks before stepping up. You’re after steady color and vigor, not a one-off spike.
What if I accidentally overapply?
Flood-irrigate the area to dilute salts and keep an eye on leaf edges; resume at reduced rates next cycle. If a lot was dumped in one spot, shovel off the excess granules first.
Where can I find the hard specs?
Mosaic’s current K-Mag granular spec sheet lists 0-0-22 with ≥10.8% Mg, ≥22% S and ≤2.5% chloride; our product page covers the added Ca, humic, penetrant, and usage guidelines.
Anything else I should pair it with?
A balanced N and P program plus regular organic matter (compost) complements K-Mag nicely—K, Mg, S + Ca from this, nitrogen and phosphorus from your base program.
Bottom line—what does K-Mag actually do for me?
It keeps color, density, and stress tolerance up by topping up potassium and magnesium while delivering pH-neutral calcium and sulfur—without the chloride sting of MOP.
