The first thing you need to know when using an herbicide such as Pennant Magnum is that the exact amount of water you dilute it with is not important. It is only important to make sure you are using the correct amount of product per 1,000 sq ft of lawn. Use too much and you risk damaging your lawn, use too little and you will not get adequate results. You will need to use 11 ml -28 ml per 1,000 sq ft . To decide how much water you want to use, you should mark a 1,000 sq ft area, fill your sprayer with water ONLY, and start walking and spraying just as if you were doing the actual application of herbicide. When you are done walking and spraying the 1,000 sq ft area note how much water it took you to spray that area, and that is the amount you will want to mix 11 ml - 28 ml of product with for each 1,000 sq ft area that needs to be treated. You will need to make sure treated areas are irrigated with at least 1/2 inch of water (either by rainfall or by sprinkler) following the application.
Pennant Magnum is a pre-emergent herbicide, therefore - and per the label - a surfactant is not required when applying it.
No, Pennant Magnum is not labeled for applications to cool season turf.
After applying Pennant Magnum, you want to wait 4 months before and after to reseed/resod.
For most of the country Pennant Magnum would be applied in the spring and/or fall and sometimes summer, not based on when the lawn greens up. Pre-emergents prevent weeds from germinating and growing and so if you already see weeds in your yard then it is definitely too late. Most of the weeds should have germinated by now so it would be too late to apply. However, we are not sure where you live and we are not familiar with every part of the country. We recommend that you call your local cooperative extension office, and they should be able to tell you the exact times of year to apply the pre-emergent in the late fall and early spring so you can treat at the proper times in the future.
You can apply Pennant Magnum once or twice annually before weeds emerge for complete nutsedge control as long as you do not exceed the total of 4.2 pints/Acre (46 mL/1,000 sq ft) per year or crop cycle, whichever is less. Use higher label rates where yellow nutsedge is expected. You will use 14-28 mL/1,000 sq ft depending on your soil texture and level of expected weed infestation. If you are able to apply Pennant Magnum before you start seeing nutsedge in spring, then you will see better results than if you wait to make a first application after you are already seeing the new plants come up. Please refer to the product label for complete application instructions.
Unfourtunally Pennant Magnum Herbicide is labeled for pre-emergent control of yellow nutsedge but does not list green kyllinga on the product label. Unfortunately there is not a pre-emergent labeled for green kyllinga. Green Kyllinga is controlled with post emergents like Sedgehammer + Herbicide. Please check the product label fo make sure your turfgrass is listed as tolerant.
It is recommended to apply Pennant Magnum Herbicide when temperatures are between 65 and 85 degrees?
The max rate for Pennant Magnum depends on what type of area you are using it in. Per the product label: For commercial sod production, do not apply more than 4.2 pt/A per year to the same area used for sod production. For other turf uses, do not apply more than 2.6 pt/A per year.
You can apply Pennant Magnum once or twice annually before weeds emerge. The max rate for Pennant Magnum depends on what type of area you are using it in. Per the product label: For commercial sod production, do not apply more than 4.2 pt/A per year to the same area used for sod production. For other turf uses, do not apply more than 2.6 pt/A per year.
Pennant Magnum is labeled for use on St. Augustinegrass. Please refer to the label for complete application instructions.
Pennant Magnum is not labeled to control green kyllinga. However, the label of Bonide Sedge Ender Concentrate states that it controls green kyllinga as a pre-emergent.
For most of the country Pennant Magnum would be applied in the spring and/or fall and sometimes summer, not based on when the lawn greens up. Pre-emergents prevent weeds from germinating and growing and so if you already see weeds in your yard then it is too late to apply a pre emergent and a post emergent would be recommended.
Please view our Cool and Warm Season Lawn Care Calendar for general timing recommendations or we also recommend contacting your local cooperative extension office for the most accurate timing recommendations in your area.
