Yes, a single rainfall or sprinkler irrigation of 0.5 inches or more is necessary to activate Gallery 75 DF Specialty Herbicide.
Gallery 75 DF Specialty Herbicide has a 3 year shelf life if stored away from extreme temperatures in the original container.
There are 16 oz in a pound of Gallery 75 DF Specialty Herbicide.
Gallery 75 DF Specialty Herbicide is a pre-emergent herbicide that can be applied to established cool and warm season turfs. It should be applied separately from Prodiamine or other pre-emergent herbicides.
Yes, Gallery 75 DF Specialty Herbicide is safe for use on St. Augustine as well as other warm-season turf like Bermuda, Bahia, and Zoysiagrass.
You should irrigate areas that have been treated with Gallery 75 DF Specialty Herbicide with about ½ in. of water within 24 hours of application.
It is important to apply pre-emergents like Gallery 75 DF Specialty Herbicide just before the soil reaches 55+ degrees, right before the seeds begin to germinate in the soil. For warm season grasses, this is typically around February-March. You may contact your county extension office for the specific time frame to apply in your county and also visit our Lawn Care Schedule Guide for more information.
We do carry a product by Fertilome that contains Gallery, it is called the Ferti-Lome Broadleaf Weed Control with Gallery and is a granule. It is currently the only "generic" isoxaben that we carry.
Gallery 75 DF Specialty Herbicide is a pre-emergent that prevents many more broadleaf weeds than other pre-emergent herbicides such as Dimension 2EW. So using both of these products is not redundant if you need to prevent weeds that are on each of those labels. Keep in mind that some plants will germinate more in the fall and others more in spring, so in an area where you have a very long growing season, we recommend using both spring and fall applications. Just be sure that you do not exceed the maximum annual application rate for any specific product you are using.
Another option is the newer product Crew Specialty Herbicide, which is a granule pre-emergent that has both dithiopyr (Dimension) and isoxaben (Gallery) in one product.
Any hand pump sprayer can be used to apply Gallery 75 DF Specialty Herbicide. Many of our customers like the Chapin Premier 1-Gallon Sprayer.
Yes, Gallery 75 DF Specialty Herbicide can be used to treat around knockout roses
Chamberbitter (also called mimosa, gripeweed, niruri) germinates when temperatures are warm, around 70 degrees F. You would need to apply Gallery 75 DF at the rate of at least 1 lb per Acre (0.38 oz per 1,000 sq ft) to prevent this weed from germinating. You can reappyl at 60 day intervals as needed, as long as you do not exceed 4 lbs per Acre per year, per the product label. The only temperature restriction we would recommend is that you should not apply pre-emergents when the ground is frozen, near freezing temperatures, or water-logged. So if you make a February or March application, then you could reapply at least 60 days from that.
Another great tool to help prevent this weed in ornamental beds is to keep a 2-4" layer of mulch in the beds to prevent these seeds from being able to germinate. Here are some articles with additional relevant tips and information:
http://blogs.ifas.ufl.edu/santarosaco/monthly-garden-tips/
https://ask.extension.org/questions/258303
http://extension.uga.edu/content/dam/extension-county-offices/lowndes-county/anr/chamberbitter.pdf