The Mole Hole · The Chemical Room
The complete chemical reference room: fertilizers, herbicides, fungicides, insecticides, spray know-how, the full brand directory, and the correct way to mix — with the product label in control at every step.
Real photo: Tim Sheerman-Chase, CC BY 2.0, via Wikimedia Commons.
Choose a grass and season for a practical N-P-K starting framework, then calibrate before spreading. Know the fertilizer type first — the bag tells you how it behaves.
Real photo: Suyash Dwivedi, CC BY-SA 4.0, via Wikimedia Commons.
Granular products feed through the spreader; soluble products dissolve into the spray tank. The type sets how you apply it and how fast it responds.
Fast turf response from soluble nitrogen. Apply in smaller splits and irrigate only as the label directs to limit burn and loss.
Feeds over a longer window. Release depends on coating, temperature and moisture; confirm the product’s stated longevity.
Contains N, P and K in the analysis. Choose the ratio from soil/tissue results rather than assuming every site needs all three.
Nutrients release through biological activity and may be variable. Count all nutrient sources in the seasonal total.
Often higher in phosphorus for establishment. Use only where a soil test, turf need and local rules support phosphorus.
Iron, manganese and other micronutrients correct documented needs; they are not substitutes for sound N-P-K planning.
Example starting frameworks — set real rates from soil/tissue tests and the product label.
Common professional categories and active-ingredient examples. Registration, turf tolerance and availability vary by site and location. Label first — every card below carries its mixing note and its label checks.
Real photo: Dave Hitchborne, CC BY-SA 2.0, via Wikimedia Commons.
The best chemistry fails through a worn nozzle or a guess at the rate. Calibrate the sprayer, confirm the label rate, and document every pass.
Urea and ammonium sulfate for nitrogen; monoammonium phosphate where phosphorus is supported; potassium sulfate or potassium nitrate for potassium; iron and manganese only for documented needs.
Examples include prodiamine and pendimethalin. Match the exact product label to the turf species, use site and target weed before applying.
Selective examples include 2,4-D, dicamba and quinclorac; glyphosate is nonselective. Confirm turf safety, temperature limits and reseeding intervals on the label.
Examples include azoxystrobin, propiconazole and chlorothalonil. Diagnose first and rotate FRAC groups; never rely on one mode of action for repeated treatments.
Examples include chlorantraniliprole, imidacloprid and bifenthrin. Use only for a labeled pest and site, with pollinator, water and re-entry precautions observed.
Examples include trinexapac-ethyl and paclobutrazol. Turf species, growth stage, mowing plan and temperature all affect labeled use.
Penetrant, retainer and combination products manage water movement differently. Choose from soil conditions and the product’s labeled use pattern.
Nonionic surfactants, crop-oil or methylated-seed-oil products, buffers, water conditioners, antifoam, drift-control aids and indicator dyes are used only when the pesticide label allows or requires them.
Every spray, fertilizer, mix and chemical brand that matters to turf — brand names as text links only, zero logos. Linked names open the manufacturer’s official site in a new tab; unlinked names are listed for reference.
Professional turf fertilizers and combination products; now part of SiteOne Landscape Supply.
Professional turf nutrition including granular and specialty fertilizers.
Country Club and Proscape professional fertilizer lines for golf and sports turf.
Professional-grade turf nutrition and combination products.
Biosolids-based slow-release nitrogen trusted by pros and homeowners alike.
Global crop nutrition company with turf and professional fertilizer lines.
Controlled-release fertilizers (formerly Everris) for turf and ornamentals.
Custom-blend fertilizers and Polyon controlled-release technology.
Foliar and specialty turf nutrition programs.
Liquid and specialty fertilizers for turf and ornamentals.
Best, Jacklin Seed and professional turf nutrition lines.
Enhanced-efficiency nitrogen technologies (Agrotain, SuperU).
Turf portfolio spanning herbicides, fungicides and insecticides, with labels and SDS on GreenCast.
Formerly Bayer Environmental Science — the turf and ornamental business now operates as Envu.
Professional Turf & Ornamentals portfolio of herbicides, fungicides and insecticides.
Employee-owned maker of SpeedZone, Trimec, Surge herbicides plus fungicides and insecticides.
Value and innovation across herbicides, fungicides and insecticides for US turf.
Crop protection portfolio with turf herbicides, fungicides and insecticides.
Maker of Dimension and other professional vegetation management herbicides.
Control Solutions Inc. value line of herbicides, fungicides and insecticides.
Specialty crop protection including turf herbicides and insecticides.
Heritage, Daconil, Medallion and rotation partners — check FRAC groups on GreenCast.
Turf fungicide portfolio including rotation options for resistance management.
Value fungicide line for professional turf programs.
Specialty fungicides and plant health products.
Talstar and professional insecticide lines.
Specialty insecticides for professional applicators.
Drift-reduction spray nozzles and application technology.
Spray pumps, nozzles and fluid-handling components (Pentair).
Spray pumps and nozzles for agricultural and turf application.
Mixing order matters: the wrong sequence causes clumps, separation, clogged nozzles and dead product in the tank. Below is the industry-standard general mixing sequence. The product label’s mixing order always wins over any general sequence.
Pre-slurry dry products in a small amount of water, then add to a tank that is 1/2 to 3/4 full with the agitation running. Give them time to fully disperse before anything else goes in.
Agitation stays on from the first addition until the tank is empty. Never let a mixed tank sit still; settled product stratifies and starves nozzles.
Add slowly with agitation running. Shake the container well first — flowables settle in the jug too.
Add after the flowables. ECs carry solvents, so they go in once the dry and flowable products are fully dispersed.
Add near the end, then top off with water to the final volume. Adjuvants and drift-control aids go here — only when the pesticide label allows or requires them.
Never in the spray tank. Read the analysis and label rate, measure the area, calibrate the spreader, and document the pass.
Dissolve completely in the carrier before any crop-protection product is added. High-salt solutions can crash some formulations — jar-test first.
Dry flowables and granules early with full agitation; liquids in sequence; EC formulations later. Amine and ester formulations behave differently — label first.
Most turf fungicides are suspension concentrates or water-dispersible granules — early in the sequence with strong agitation. Protectant types need thorough, even coverage to work at all.
Add per formulation type in the standard sequence. Plan the application timing around pollinator restrictions on the label — morning vs. evening matters.
Very low use rates — measure with a graduated cylinder, not a guess. Add with good agitation; tank-mix only where the label allows.
Usually later in the sequence — but some surfactant labels call for an early addition. Read the surfactant’s own label, not just the pesticide’s.
Only when the pesticide label allows or requires them. Drift-control aids, dyes and buffers go in per their own label directions, near the end of the sequence.
Illustrative example only — always use your label’s exact rate. Suppose a label says 2 fl oz of product per 1,000 sq ft, and your calibrated sprayer delivers 2 gallons of spray per 1,000 sq ft:
Change any variable — nozzle, pressure, speed, product — and the math changes. Recalibrate and recalculate.
The label specifies the minimum PPE for each product. Below is the standard baseline — the label can require more, never less.
| Item | Baseline guidance |
|---|---|
| Chemical-resistant gloves | Label-specified material (e.g., nitrile, neoprene). No leather, no cloth. |
| Eye protection | Goggles or face shield when mixing, loading, or applying. |
| Body covering | Long-sleeved shirt, long pants, socks — plus a chemical-resistant apron for mixing and loading. |
| Footwear | Chemical-resistant boots or shoe covers; no open shoes. |
| Respirator | When the label requires it — matched to the product (dust/mist or vapor cartridge). |
| After handling | Wash hands and face; launder work clothes separately; shower at end of the day. No eating, drinking, or smoking while handling. |
Every registered product has a 16-section SDS from the manufacturer. Get it from the manufacturer’s website, your distributor, or an SDS database — before you mix, load, or apply.
Read at minimum: Section 2 (hazards identification), Section 4 (first-aid measures), and Section 8 (exposure controls / PPE). Keep the SDS where the crew can reach it — in the shop and on the spray rig.
The math behind every good application. These tools convert rates — they never recommend a product or a rate. The label does that.
Enter the carrier output and product rate printed on the selected label. The calculator converts that rate to one tank. Your carrier rate must come from a calibrated sprayer.
Rate check: pounds of product used ÷ test-area square feet × 1,000 = pounds of product per 1,000 sq ft. To convert to nitrogen delivered, multiply that product rate by the first analysis number as a decimal — for example, 20% N = 0.20.
Use the label, site and target to build a supplier-ready request before asking a licensed distributor for availability and price.
Document turf species, treated area, target pest or nutrient need, diagnosis and recent applications.
Confirm the EPA registration, exact labeled site, active ingredient, formulation, package size, SDS and any license restrictions.
Use labeled rate × measured area, include planned applications, and stay within per-application and annual label maximums.
Buy from an authorized turf supplier, verify lot and seal at receipt, then store, inventory and dispose according to the label and local rules.
Everything in the Chemical Room is purchasable — same as the marketplace: browse or search, tap any product for full details, add to cart, and check out. The 10% Mole Hole service fee applies to every order. Prices shown are typical street prices; where pricing varies by region and registration, the product is listed as “Request quote”.
AI search for chemical questions: mixing order, calibration, PPE, rates and labels. Answers are educational guidance — the product label always has the final word.
Agronomy updates, product news and superintendent stories.
Short clips from Mole Reels.