Hi-Yield Dimension Rates (Application Guide)

Hi-Yield Dimension 2EW is a liquid pre-emergent herbicide containing dithiopyr at 2 pounds of active ingredient per U.S. gallon. Where the current container label allows it, the rate is 0.5 to 0.73 fluid ounce per 1,000 square feet. Confirm the product, turf, target weed, and label directions before measuring, mixing, or spraying.

What if you measure the lawn correctly but use a rate copied from a different Dimension product? You could apply too much, miss the target, or harm turf that is not listed for treatment. The safest approach is to use the label on your exact container, then calculate product for the area you measured.

I treat the label as the job plan, not fine print. Rates, annual limits, turf restrictions, and watering directions can vary by use. This guide explains how to select and calculate a rate, calibrate a sprayer, apply evenly, and handle cleanup without guessing.

Product Identification, Rate Selection & Safety Preparation

Hi-Yield Dimension 2EW is a liquid formulation of dithiopyr, a pre-emergent herbicide used to prevent listed weeds in labeled sites. It contains 2 pounds of active ingredient per U.S. gallon. Before planning an application, confirm the exact product name and read the full label supplied with the container.

Confirm the product and applicable rate

The range of 0.5 to 0.73 fluid ounce per 1,000 square feet applies only where that range appears on the current Dimension 2EW label for your site and target. Do not use it as a universal rate. A different target, site, or direction may call for a different instruction.

Rates for granular products and other Dimension formulations are not interchangeable with this liquid product. Check that the container identifies Dimension 2EW, then find the label directions for the intended turf and weed. If the label does not cover the site or use, do not apply the product there.

These are arithmetic examples, not recommendations to choose either end of the range. Use only the rate and target-specific directions on your container label.

Check the site, turf, and safety directions

A pre-emergent herbicide is meant to act before susceptible weeds become established. The label sets the allowed timing and lists the weeds, sites, and turf types covered. Correct measurement alone does not make an application suitable for every lawn.

Before mixing, identify the turf species and check whether it is established. Recently seeded or sodded turf may have restrictions, and an application can interfere with desirable grass establishment if the label does not allow it. Confirm the label’s establishment interval and any limits for the turf species.

Read the label and Safety Data Sheet (SDS). Follow the label’s directions for personal protective equipment (PPE), weather, re-entry, setbacks, and disposal. Check wind and rain conditions against the label. Keep people and pets out as directed, and do not spray edible crops or any site not listed.

Next step: Write down the product name, turf, target weed, measured area, and applicable label rate before you prepare the sprayer.

Calibration and Field Application

Calibration means checking how much spray your equipment applies over a known area. It helps you deliver the measured product evenly across the lawn. The water volume depends on the sprayer and its setup; it does not replace or change the labeled product rate.

Measure the area and calculate product

Break an irregular lawn into simple shapes, measure each one, and add the areas. For a rectangle, multiply length by width. Leave out areas that are not part of the labeled treatment site, such as paved surfaces.

Use this calculation:

Product needed = area in square feet ÷ 1,000 × the label rate per 1,000 square feet

For example, if the label rate you selected is 0.5 fluid ounce per 1,000 square feet and the lawn measures 5,000 square feet, the calculation is 5 × 0.5, or 2.5 fluid ounces. If the applicable label rate is 0.73 fluid ounce, the same area needs 3.65 fluid ounces. Select the rate based on the label, not convenience.

Calibrate with clean water

First check the sprayer for leaks and confirm that the nozzle and other parts are in working order. Fill it with clean water, then spray a measured test area using the same walking pace, pressure, and nozzle setting you plan to use. Check how much water the sprayer uses over that area.

Use the test to determine whether the sprayer can cover the treatment area evenly without running out early or leaving excess. If needed, adjust the setup and repeat the test. Do not use more product to compensate for a change in water volume. Keep the product amount tied to the measured area and label rate.

Mix according to the label’s sequence and directions. Measure the product with a suitable measuring tool, add it and water as directed, and avoid splashes. Do not estimate by eye or mix more than you can apply as allowed by the label.

Apply at the labeled timing

Apply uniformly over the intended area. Overlapping passes can create uneven coverage and may put excess product in some spots. Keep the sprayer moving at a steady pace, and follow label restrictions for wind and other weather conditions to limit drift.

Follow the label for watering in, mowing, reseeding, and any repeat application. Do not assume irrigation is always required, or that rain can take its place. The label also controls the minimum interval between applications and the annual maximum. Never exceed either limit.

Next step: Before spraying the whole lawn, confirm the test area, sprayer output, product quantity, weather, and label timing.

Worked Application Examples

These examples show the arithmetic and planning process for typical measured areas. They are not reports of completed treatments or a substitute for the label. For each property, the applicable label directions must first confirm the site, turf, target, and rate.

Example: 5,000-square-foot lawn

A homeowner measures a lawn at 5,000 square feet and finds the intended use and target on the product label. If the applicable rate is 0.5 fluid ounce per 1,000 square feet, the calculation is five units of 1,000 square feet multiplied by 0.5, for 2.5 fluid ounces.

The homeowner then calibrates the sprayer with water over a known area and estimates how much carrier is needed for uniform coverage. The water amount is based on the sprayer test; the 2.5 fluid ounces is based on the chosen label rate. Those are separate figures.

Example: 10,000-square-foot property with exclusions

A manager measures 10,000 square feet of turf but excludes a garden and a paved drive from the treatment area. If the label allows a rate of 0.73 fluid ounce per 1,000 square feet for the intended use, the amount for the measured turf is 7.3 fluid ounces.

The manager checks that the turf meets the label’s establishment requirements and confirms the application timing. If the label does not allow that site or target, the calculation does not make the treatment acceptable. The correct next step is not to spray.

Example: new turf or uncertain boundaries

A recently sodded area may look established while still falling within a label restriction. In that case, the manager checks the exact establishment directions before applying. If turf type, seeding date, or treatment boundary is uncertain, pause and verify those details rather than relying on a general rate table.

Takeaway: Measure only the labeled treatment area, use the label’s rate for that use, and treat calibration as a separate check on even coverage.

Spray Equipment Cleanup and Application Records

Cleanup protects people, equipment, and nearby areas from leftover spray. Follow the container label for rinsing, cleaning, and managing rinsate and the empty container. Never pour leftover spray or rinsate into a drain, waterway, or storm sewer.

Clean equipment as the label directs

Keep the treated area restricted for the period stated on the label. Clean the sprayer and measuring tools according to the label directions. Handle rinse water as directed; do not assume it is safe to pour onto any surface or into any drain.

Manage the container only as the label and local disposal rules allow. Do not reuse a pesticide container for another purpose. If you are unsure how to handle leftover mixture, rinsate, or packaging, check the label and contact the relevant local waste authority before disposal.

Record the application

A short record helps prevent accidental overuse and makes future planning more reliable. I recommend writing down:

• Product name and formulation
• Treatment area and target weed
• Label rate and total product measured
• Date, weather, and applicator
• Sprayer setup and any label-directed watering
• Any repeat treatment, with its date and rate

Next step: Keep the product label and application record together so the next person can check what was applied and when.

Storage, Disposal & Seasonal Planning

Seasonal planning starts with the label, not a calendar copied from another lawn. Store the product as its label directs and keep it in its original, labeled container. Check the label each season for timing, application limits, turf restrictions, and directions that apply to the planned use.

Do not set a repeat schedule unless the label permits it. The annual maximum, repeat interval, and timing vary by use and must be checked on the exact container. Keep unused product secured as directed and dispose of it only under label and local requirements.

Before the next application, confirm the lawn’s current condition. New seeding, sodding, or changes in turf type can affect whether treatment is allowed. Re-measure areas if boundaries have changed, and recalculate the product amount rather than reusing a prior mix estimate.

Frequently Asked Questions

These answers cover common rate and application questions for Dimension 2EW. The product label supplied with your container remains the final authority for allowable sites, turf, targets, timing, safety, and cleanup. If a general answer conflicts with that label, follow the label.

What is the rate for Hi-Yield Dimension 2EW?
Where the current label gives the range, it is 0.5 to 0.73 fluid ounce per 1,000 square feet. Confirm the applicable rate for your specific use on the container.

How much product is needed for 5,000 square feet?
At 0.5 fluid ounce per 1,000 square feet, the calculation is 2.5 fluid ounces. At 0.73, it is 3.65 fluid ounces. Use only a rate allowed for your target and site.

How much product is needed for 10,000 square feet?
The arithmetic is 5 fluid ounces at a rate of 0.5 per 1,000 square feet, or 7.3 fluid ounces at 0.73. The label determines which rate applies.

Can I use the same rate as a granular Dimension product?
No. Rates are not interchangeable among Dimension formulations. Check that your container says Dimension 2EW and use its directions.

Does adding more water change the product rate?
No. Water is the carrier that helps distribute the product. Keep the product amount tied to the measured area and label rate; calibrate the sprayer for even coverage.

Can I apply it to recently seeded or sodded turf?
Only if the exact container label allows that use at that stage. Check turf type and establishment restrictions before treating.

When should I water after application?
Follow the label’s watering directions for your use. Do not assume that watering is always required or that rainfall substitutes for an instruction.

How often can I reapply it?
The label sets the repeat interval and annual maximum. Do not infer either from a general rate guide or exceed the stated limit.

What should I do with leftover spray or rinsate?
Follow the label’s cleanup and disposal directions. Do not pour it into drains, waterways, or storm sewers.

What if the label does not list my turf or site?
Do not apply the product there. A correct rate does not make an unlabeled use acceptable.

(This article was written by one of our staff writers, Victor Dempsey. Visit our Meet the Team page.)