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.
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 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.
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 a pre-emergent only and will not kill anything actively growing. We would recommend using Fertilome Brush Killer and Stump Killer. For the roots, apply the undiluted product with a paintbrush to completely cover the fresh-cut surface. Here is the link for the product:
http://www.domyownpestcontrol.com/fertilome-brush-killer-and-stump-killer-p-1545.html
Please let us know if you have any additional questions.
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.