Harrell’s Fertilizer Calculator: How Much Do You Need?

🌿 Harrell's Fertilizer Calculator

Calculate exactly how much fertilizer, soil amendment, or turf product you need for your project

Quick Presets
📐 Enter Your Dimensions
Material Weight Reference
📏 Coverage by Depth
DepthSq Ft per Cu YdSq M per Cu MCu Ft per 100 Sq Ft
1 in (2.5 cm)32440.08.3
2 in (5.1 cm)16220.016.7
3 in (7.6 cm)10813.325.0
4 in (10.2 cm)8110.033.3
6 in (15.2 cm)546.750.0
🛒 Bags vs Bulk Conversion
Bag SizeVolume per BagBags per Cu YdCoverage at 3 in
Small (1 cu ft / 28.3 L)1 cu ft274 sq ft
Medium (2 cu ft / 56.6 L)2 cu ft13.58 sq ft
Large (3 cu ft / 85 L)3 cu ft912 sq ft
Bulk (1 cu yd / 0.76 m³)27 cu ft1108 sq ft
🏡 Common Project Sizes
ProjectAreaCu Yds (3 in)Bags (2 cu ft)
Small Flower Bed100 sq ft (9.3 m²)0.9313
Medium Garden250 sq ft (23.2 m²)2.3132
Large Border500 sq ft (46.5 m²)4.6363
Quarter Lawn1,000 sq ft (92.9 m²)9.26125
Half Acre Treatment2,500 sq ft (232 m²)23.15313
Full Property5,000 sq ft (464 m²)46.30625
💡 Helpful Tips
📝 Soil Testing First: Before applying any fertilizer product, a soil test helps determine the exact nutrient levels your soil needs. Over-application can burn turf and waste product. Most extension offices recommend testing every 2–3 years to dial in the right formulation and application rate.
⚖️ Measuring Irregularly Shaped Areas: For lawns and beds that arent perfect rectangles, break them into smaller rectangles, circles, or triangles. Calculate each section separately and add the totals together. Adding a 10% overage buffer accounts for overlap, irregular edges, and product lost during spreading.

This article combines reliable information and experiences of folks that well knows the last strong products of Harrell.

Harrell built his name as a mainstream maker of usual mixes from Fertilizer and it ranks between the biggest agencies of United States when deal about exactly set chemical products for golf, territory care, greenhouses and special farming. Clients of them include golf courses, horticultural growers, professionals about territory and landscape, services for sporting soils and operations in special farming. They offer much more than only Fertilizer, in his range you find also wetting agents, special liquids and leaf nourishments.

Harrell fertilizers and how they help plants

The company became one of the national mainstream distributors of exactly set products for plant health. They work with big enterprises as Bayer, Syngenta, BASF, Nufarm, FMC and Corteva. That net of partnerships gives to them strong position in the world of territory and farming.

Everywhere shows their symbolic phrase: “Growing Better World.” Moreover, they provide plant protectors and biocontrols especially for the horticultural branch. The range of products genuinely is broad… Helpers, colorants, liquid leaf nourishments, options with controlled release, granular mixes, peat, water-soluble versions and wetting agents, everything under thier mark.

Professional Fertilizer of Harrell form the line of professional quality, done for landscape work and alike usages. When one orders a mix by need, one uses the freshest high release technology. Many their recipes base on POLYON Controlled-Release Fertilizer.

In the blending they have access to until 175 various ingredients, and everything passes double and triple screening to ensure the best mixes.

Polyon served as the mainstream controlled-release product of Harrell since 1992, it genuinely is the favourite in United States for applications on turfgrass. The coating adjusts itself according to temperature changes and does not care about wet ore dry soil. It projects because of be environmentally healthy source of nourishments.

One requires less applications, what lowers the work. It gives more equal nutrition to plants, what reduces risk of diseases. The reactive coating is patented, and one immediately recognises POLYON according to its trademark green colour.

Fertilizer of Harrell come in several different versions according to your need. Here 32-3-5 with 2% iron and 50% slow release, available in bags of 50 pounds. Later exist the 18-1-9 variant with 70% Polyon and 44% jak…

It delivers 6-weekly slow release without filler. It stores 20% sulfate ammonia together with biosolids and cover 9,000 square feet when one applies 1 pound of nitrogen for 1,000 square feet.

The formula 16-6-12 is other option with controlled release, that lasts until 6 months. Many simply take a ration and scatter it around trees each two months. For something more basic, the 14-14-14 mix ensures permanent and steady nutrition.

One application of that lasts of 4 until 5 months.

Moreover there is 16-5-10 with micronutrients, that holds 8 until 9 months. It targets crops in tins, especially for leafy pinks, and grassy perennials genuinely benefit on it. They enclosed more than 1.5% iron to add gloss and deep green colour to the leaves.

To the lovers of houseplants answer the 18-5-10 professional formula with 6-month slow release, that well works for philodendrons, alocasias, monsteras, hoyas and epipremums.

Harrell also manufacture horticultural Fertilizer for 2 until 3 months, that folks call the “original precious speciality”. The Fertilizer itself is seen as the golden standard of the industry for applications on turfgrass.

But here the spot. Products of Harrell usually arrive through agencies instead of direct retail sale. Ewing Irrigation, SiteOne and alike enterprises keep them commonly.

More little crowds are available online, sent in clear bags of 5 pounds instead of the usual 50-pound, and the UPS Ground dispatch is free.

Many choose the way of custom blending with a representative of Harrell, but the smoothness of that experience depends much on your local vendor. Except Fertilizer, they have products as Brilliance G, that well works but only during 3 months, aids for rooting and EarthMax for resistance against drought. Exists also Platform, that slows grassy increase during give to it the bright, caredlook of golf course.

In every occasion, the last Fertilizer of Harrell form genuinely reliable professional choice for all work about territory and plant care.

Harrell’s Fertilizer Calculator: How Much Do You Need?

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