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OHP
OHP Marathon 1% Granular Insecticide
OHP Marathon 1% Granular Insecticide is a high-powered, systemic insecticide that provides up to 12 weeks of control against damaging pests in greenhouses, nurseries, and interior plantscapes.
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OHP Marathon 1% Granular Insecticide Product Page
Min : 74.9 - Max : 74.9
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Price as of
11/04/25
11/04/25
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OHP Marathon 1% Granular Insecticide, manufactured by OHP, is a strong professional-grade granular insecticide that controls ornamental and crop pests in greenhouses, nurseries, and interior plantscapes with up to 12 weeks of residual activity.
This systemic granular insecticide travels throughout the foliage root system and leaves, ensuring that feeding insects no matter where they nibble ingest the active ingredient for complete kill. Thanks to its translaminar activity, the product moves into leaf tissues, delivering rapid knockdown of insect populations such as thrips, aphids, grubs, and more while maintaining longer-lasting residual effects.
OHP Marathon 1% Granular Insecticide is an economical and powerful imidacloprid-based granular insecticide that can be applied to ornamentals, fruit and nut trees, vegetable transplants with low minimum rates. With up to 12 weeks of control, growers save time, reduce labor, and protect their crops with confidence.
Tools Needed
A push spreader, broadcast spreader, or handheld spreader will be needed.
How to Use
- Step 1: Determine how much OHP Marathon 1% Granular Insecticide to use by measuring the square footage of the treatment area. Find the square footage by measuring the treatment area's length and width in feet, then multiply them together (length X width = square footage). For acreage, take the square footage and divide it by one acre (square footage / 43,560 sq. ft. = acres). For topical applications on vegetable transplants (1 to more plants per pot), and herbaceous species, apply 1/4 level teaspoons of OHP Marathon 1% Granular Insecticide. For ornamental and vegetable transplants, and containerized plants grown in flats, on benches, or in beds use 15 ounces of product per 1,000 sq. ft. Refer to the product label for specific application rates and restrictions.
- Step 2: Calibrate the spreader to the proper setting the load the proper amount of product.
- Step 3: Evenly apply granules to the soil or growing media surface. Irrigate moderately after application to move the active ingredient into the root zone. Do not allow significant leaching and runout for at least 3 irrigations or 10 days, whichever is longer.
Where to Use
OHP Marathon 1% Granular Insecticide can be used on ornamentals, non-bearing fruit and nut trees, and vegetable transplants in greenhouses, nurseries, and interior plantscapes.
Do not apply this product, by any application method, to linden, basswood or other Tilia species.
When to Use
Apply when pest activity is first noticed or prior to activity.
Safety Information
OHP Marathon 1% Granular Insecticide is safe for people and pets when applied according to the product label instructions. Always wear the proper personal protective equipment (PPE) when handling and applying this product.
Keep children and pets off the treated area until dry.
Special Considerations
Onset of protection is slower than in herbaceous species. A delay of 2 or more weeks is expected. Longer delays may be expected with larger plants. Make application in advance of expected insect activity.
| Availability | Online |
| Restricted Use | No |
| Shipping Restrictions * = not registered** = restricted use | 5 Pound: CA**, CO**, CT**, MA**, MD**, ME**, NH**, NJ**, NV**, NY**, OR**, RI**, VT**, WA** |
| Brand | OHP |
| Keith's Pro Tips | "To prevent making applications when grassy areas are waterlogged or the soil is saturated, avoid applying after heavy rainfall or irrigation and always check soil moisture conditions beforehand ensure the ground is firm and not overly soft or muddy. Waiting until the area has dried out slightly will help ensure proper product absorption and reduce runoff or pooling." |
| Product Drawbacks | This product is highly toxic to bees exposed to direct treatment or residues on blooming crops/plants or weeds. |
| Target Pests | Adelgids, Annual Bluegrass Weevils, Aphids, Armored Scales, Asiatic Garden Beetle, Billbugs, Black Turfgrass Ataenius, Black Vine Weevil, Chinch Bug, Citrus Root Weevil, Cutworms, European Chafer, Fungus Gnat (Larvae), Fungus Gnats, Japanese Beetle, Leafhoppers, Leafminers, May Beetles, Mole Crickets, Northern Masked Chafer, Oriental Beetle, Psyllids, Root Mealybugs, Root Weevils, Soft Scales, Southern Masked Chafer, Sugarcane Rootstalk Borer Weevil (Apopka Weevil), Thrips, White grubs, and Whiteflies. |
| Application Equipment | Hand Spreader, Push Spreader |
| Application Methods | Granular Spreading |
| Active Ingredient | Imidacloprid 1.0% |
| Product Type | Insecticide |
| Formulation | Granular |
| Application Rate | For topical applications on vegetable transplants (1 to more plants per pot), and herbaceous species, apply 1/4 level teaspoons of OHP Marathon 1% Granular Insecticide. For ornamental and vegetable transplants, and containerized plants grown in flats, on benches, or in beds use 15 ounces of product per 1,000 sq. ft. |
| Shelf Life | OHP Marathon 1% Granular Insecticide will last for 3 years when stored in a dry, clean area. |
| Yield | 5 lbs. of OHP Marathon 1% Granular Insecticide will cover approximately 5,333 square feet when applied at the recommended rate of 15 ounces per 1,000 square feet. |
| Use Sites | Outdoors |
| Time to Kill | OHP Marathon 1% Granular Insecticide will control pests for up to 12 weeks. |
| Comparable Products | Imidacloprid 0.5G |
| EPA Registration # | 59807-15 |
| Restricted Use | No |
|---|---|
| Availability | Online |
| Signal Word | CAUTION |
| Keith's Pro Tip | "To prevent making applications when grassy areas are waterlogged or the soil is saturated, avoid applying after heavy rainfall or irrigation and always check soil moisture conditions beforehand ensure the ground is firm and not overly soft or muddy. Waiting until the area has dried out slightly will help ensure proper product absorption and reduce runoff or pooling." |
| Time to Kill | OHP Marathon 1% Granular Insecticide will control pests for up to 12 weeks. |
| Chemical Type | Insecticide |
| Formulation | Granular |
| Application Methods | Granular Spreading |
| Product Drawbacks | This product is highly toxic to bees exposed to direct treatment or residues on blooming crops/plants or weeds. |
| Active Ingredient | Imidacloprid 1.0% |
| Application Equipment | Hand Spreader, Push Spreader |
| Mix Rate | For topical applications on vegetable transplants (1 to more plants per pot), and herbaceous species, apply 1/4 level teaspoons of OHP Marathon 1% Granular Insecticide. For ornamental and vegetable transplants, and containerized plants grown in flats, on benches, or in beds use 15 ounces of product per 1,000 sq. ft. |
| Use Sites | Outdoors |
| Yield | 5 lbs. of OHP Marathon 1% Granular Insecticide will cover approximately 5,333 square feet when applied at the recommended rate of 15 ounces per 1,000 square feet. |
| EPA Registration No. | 59807-15 |
| Shelf Life | OHP Marathon 1% Granular Insecticide will last for 3 years when stored in a dry, clean area. |
| Comparable Products | Imidacloprid 0.5G |
| Children or pets? | No |
| Property Characteristics | Food-Bearing Plants |
*Price does not include freight. We guarantee our rate plus shipping will be less than anyone else's price.