No, Casoron 4G Herbicide cannot be applied to aspargus or any other edibles.
An alternartive recommendation would be Monterey Vegetable and Ornamental Weeder that is labeled for asparagus as a single application.
Per the product label for asparagus, apply after ferns are removed but before spear emergence.
Casoron 4G Herbicide can not be applied as a liquid. Per the label, you should distribute granules uniformly over the soil surface then water in with 1/2 inch of water or rainfall.
Depending on your target weeds, Barricade 4L or Dimension 2EW could be used in a liquid formulation for pre emergent control of weeds. Pleae view the product labels for information on weeds controlled and application rates.
Casoron 4G Herbicide is not labeled for use around asparagus therefore would not be recommended.
Monterey Vegetable and Ornamental Weeder would be an option for a pre emergent herbcide in established asparagus beds after ferns are removed but before spear emergents. Per the product label, this can be applied as a single application to established asparagus.
We would not recommend Casoron 4G for raised beds or flower/ornamental areas as many species have not been tested over and it could cause damage to the plants. A better option would be Snapshot for a granule to put down in beds as long as they are not vegetables. Snapshot TG is ideal for ornamental and flower bed areas to prevent a wide range of grassy and broadleaf weeds from emerging. Normally you will want an application of this to the top of the soil though as if you only treat deep in the ground you will not have a barrier on the surface where your first weeds would start to grow and appear. Since a pre emergent is designed to create a wall like barrier in the soil, it needs to be applied after all soil and plants have been put into place as disturbing the soil after application will remove the barrier.
We apologize but are not familiar with that spreader as we do not carry it so do not know the settings to use. The rate at which you apply Casoron 4G will be dependent on the weeds you are targeting. You will need to look over the Casoron Product Label to find the rates specific to your needs which can range between 100-250 lbs of Casoron per acre.
Casoron 4G Herbicide is not labeled to be used around bulb plantings, so we would not recommend this application. Gallery 75 DF can be used around ornamental bulb plantings 2-4 weeks after planting but prior to emergence of annual weeds. Per the product label: Gallery also may be applied following bulb emergence but prior to flowering and after flowering. For fall planted bulbs, apply Gallery 75 DF in late winter or early spring to weed-free soil surfaces. For bulbs, make a single applcation wtithin 30 days following planting and prior to bulb emergence.
Casoron 4G Herbicide is not labeled to be used around bulb plantings, so we would not recommend this application. Gallery 75 DF can be used around ornamental bulb plantings 2-4 weeks after planting but prior to emergence of annual weeds. Per the product label: Gallery also may be applied following bulb emergence but prior to flowering and after flowering. For fall planted bulbs, apply Gallery 75 DF in late winter or early spring to weed-free soil surfaces. For bulbs, make a single applcation wtithin 30 days following planting and prior to bulb emergence.
Casoron 4G Herbicide is not labeled to be used around bulb plantings, so we would not recommend this application. Gallery 75 DF can be used around ornamental bulb plantings 2-4 weeks after planting but prior to emergence of annual weeds. Per the product label: Gallery also may be applied following bulb emergence but prior to flowering and after flowering. For fall planted bulbs, apply Gallery 75 DF in late winter or early spring to weed-free soil surfaces. For bulbs, make a single applcation wtithin 30 days following planting and prior to bulb emergence.
Most pre emergents will not prevent tree seeds from sprouting. Casoron 4G Herbicide while safe to use around established Cottonwood trees, does not state that it would stop the cottonwood seeds specifically from sprouting, just annual weeds.
SureGuard SC is a potential option as its a post and pre emergent herbicide for use around established trees and plantations. Per the product label, the manufacturer states the following information:
"IMPORTANT: When applied as directed, poplars (Populus balsamifera, P. niger and P. tremuloides), hybrid poplars (P. sp. x sp.), and cottonwoods (P. deltoids and P. trichocarpa) have shown tolerance to this product. However, this product is a very active herbicide. Exercise responsible judgment and caution until familiarity is gained with this product. Test this product on a small number of plants to determine if this product can be used safely on a widespread basis. Do not apply this product over the top unless trees are more than one year old."
You can often reduce cottonwood fluff by making a cottonwood tree seedless through annual treatment with an herbicide containing ethephon, like Florel Plant Growth Regulator.
PGR herbicides are growth inhibiting, and they will prevent the seeds from forming when sprayed at the appropriate time of year. Getting a head start on treating your cottonwood tree with a growth hormone early in the spring is best and a full coverage spray of the fruit and tree is needed to prevent the seeds from dropping. You would not be able to spray a systemic application at the roots and have it impact the seed at the top.
