Helena Crossbow Herbicide Help - Questions and Answers

Helena Crossbow Herbicide

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Helena Crossbow Herbicide

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Asked by Sue from Oak Harbor, Wa

05/07/2023

Q

If I am careful to spray Crossbow only on horsetail will it kill my plants?
I have a major horsetail problem. It is mixed in with my plants. If i am careful to spray Crossbow only on the Horsetail will it kill my plants?

A

Helena Crossbow Herbicide will damage ornamental plants such as flowers, shrubs, and trees, so you should not apply it within the drip line of those plants. Crossbow also has soil residual, so you would not want to apply this where you intend to transplant new ornamentals, either. Keep in mind that …
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Helena Crossbow Herbicide will damage ornamental plants such as flowers, shrubs, and trees, so you should not apply it within the drip line of those plants. Crossbow also has soil residual, so you would not want to apply this where you intend to transplant new ornamentals, either. Keep in mind that Crossbow is labeled for control of horseweed (marestail, an annual weed), but not horsetail (a perennial weed).

You could use Sedgehammer Herbicide for control of young horsetail in areas with turfgrass or around woody ornamentals.

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Asked by Steve

12/09/2024

Q

What’s the least amount of Crossbow Herbicide I should use on cut buckthorn treating the cambium layer?
I want to mix the least amount of herbicide with diesel and cut the buckthorn and treat the stump

A

For control of susceptible woody plants and to prevent or control regrowth from cut stumps, Helena Crossbow Herbicide states mix 4 gallons of this product in diesel oil, No. 1 or No. 2 fuel oil or kerosene to make 100 gallons of spray mixture. That would be 4 gallons (512 oz) to 96 gallons (12,288 o…
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For control of susceptible woody plants and to prevent or control regrowth from cut stumps, Helena Crossbow Herbicide states mix 4 gallons of this product in diesel oil, No. 1 or No. 2 fuel oil or kerosene to make 100 gallons of spray mixture. That would be 4 gallons (512 oz) to 96 gallons (12,288 oz) of kerosene to make a total of 100 gallons. That would break down to 5.12 oz of Helena Crossbow to 122.88 oz of kerosene to make a 1 gallon spray mixture

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Asked by Patti from Wa State

10/24/2024

Q

Crossbow Herbicide spilled on my car carpet. How do I clean it?

A

We would recommend reaching to Chemtrec for information on chemical spills with Helena Crossbow Herbicide, they can be reached at 800-424-9300

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Asked by Dave from Merlin

08/30/2024

Q

Can I use Crossbow to spray out vegetation in a winter creek when the creek is dry?

A

No Crossbow Herbicide would not be safe to apply in creek beds at all.

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Asked by Christopher from Rainier Oregon

06/19/2024

Q

Will it take longer for the weeds to die if you have less sun after applying Crossbow?

A

Helena Crossbow Herbicide can be applied in any area you have weeds that need to be controlled that are listed in use areas on the label. The sun does not have a direct effect on the time it takes for weeds to die as long as the mix rates are applied per the product label however applications should…
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Helena Crossbow Herbicide can be applied in any area you have weeds that need to be controlled that are listed in use areas on the label. The sun does not have a direct effect on the time it takes for weeds to die as long as the mix rates are applied per the product label however applications should be made in early morning or late afternoon evening so avoid any accidental injury to desirable grasses.

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Asked by Steve from Center Hill, Fl

04/13/2024

Q

I am trying to clear a pasture of Lantana, will Helena Crossbow Herbicide work?
I have 78 acres of old orange grove, the pasture has areas very heavy in lantana and would like to kill it since we are using it for pasture grass and cattle can get sick from the lantana

A

Helena Crossbow Herbicide does not list lantana as a controlled weed on the label. PastureGard HL is a highly effective herbicide that controls unwanted weeds and woody plants including lantana in pastures.

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Asked by Edward

03/01/2024

Q

Using crossbow on Saint johns wort. The question is when I spray it how far down in the root system?

A

2,4-D compounds are systemic herbicides and will translocate slowly down to the roots. Helena Crossbow containing the 2, 4-D active ingredient would work with the same mode of action however St. Johnswort (goat weed) is not listed on the product label as one of the weeds it will control therefor
…
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2,4-D compounds are systemic herbicides and will translocate slowly down to the roots. Helena Crossbow containing the 2, 4-D active ingredient would work with the same mode of action however St. Johnswort (goat weed) is not listed on the product label as one of the weeds it will control therefore we cannot advise on the efficacy it would have on the weed.

Some alternative options that are labeled for St. Johnswort (goat weed) would be Bonide Poison Ivy and Brush Killer BK-32 Concentrate (Dicamba and Triclopyr) , Chaparral Herbicide (Metsulfuron methyl) or Alligare 2,4-D Amine Herbicide( 2,4-D). Also using a non selective glyphosate product such as RoundUp is commonly used to spot treat harder to kill weeds.

Review the product labels for application rates and information on Tank Mixing Herbicides if allowed for better results.

St. Johnswort is best treated by spot spraying when it is in flower (Nov–Jan) because it can be easily seen then and is at its most sensitive period to herbicides. Spraying should begin six to eight weeks after substantial rain and when St John’s wort reaches the 50% yellow bud – 50% open flower stage.

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Asked by Fran from Beaverton, Or

10/23/2023

Q

How can I determine if Crossbow or Roundup is in my soil?
I have replaced 4 Thuja evergreen trees in the same spot. I have them professionally installed, and in a few months, they die. I need to find a way to test the soil, as I work in it and it could affect a person's health.

A

If you would like to get your soil tested, we recommend consulting with your local extension office.

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Asked by Rodney from Gardendale, Tx

09/21/2023

Q

Will Crossbow Herbicide kill mesquite bushes?

A

Helena Crossbow Herbicide is not labeled for mesquite control. GrazonNext HL herbicide is an option depending on the area you are treating on.

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Asked by Chicka

09/11/2023

Q

Will Crossbow harm my chickens? They eat/peck at the ground where I plan to spray it.

A

Once Helena Crossbow Herbicide has dried it is safe for chickens to return, typically after 4-6 hours.

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Asked by Wilton from Ozark, Al

09/11/2023

Q

Will Crossbow kill Japanese climbing fern?

A

Helena Crossbow Herbicide is not labeled for Japanese climbing fern or Old World climbing fern. Unfortunately, there currently are not any selective herbicides labeled to control these invasive vines. Using a non selective such as Roundup QuickPro that contains atleast 41% glyphosate is recommended …
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Helena Crossbow Herbicide is not labeled for Japanese climbing fern or Old World climbing fern. Unfortunately, there currently are not any selective herbicides labeled to control these invasive vines. Using a non selective such as Roundup QuickPro that contains atleast 41% glyphosate is recommended and repeat application will be needed. Avoid contact with desirable plants by directly spraying or brushing the application onto the vine.

Please review this article from Alabama A&M Extenstion Office for more information.

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Asked by Edwin from Fouke, Ar

08/15/2023

Q

Can you use Crossbow for back and squirt applications
If Crossbow can be used for back & squirt applications - what would be the mix ratio?

A

The label for Helena Crossbow Herbicide does not mention using it with the method of hack and squirt.

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Asked by Carol from Fuquay Varina

08/04/2023

Q

Can Crossbow be applied to runners without killing mother plant?

A

You would not want to apply the Helena Crossbow Herbicide to any plant you didn't plan to kill completely. The systemic nature of the product would very likely move into more areas of the plant than just where you applied it. Products that are plant growth regulators would typically be used to r…
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You would not want to apply the Helena Crossbow Herbicide to any plant you didn't plan to kill completely. The systemic nature of the product would very likely move into more areas of the plant than just where you applied it. Products that are plant growth regulators would typically be used to reduce spread or new shoots/growth from plants that have been trimmed. The Sucker Punch RTU is a popular choice to stop "suckers" - new sprouts from a cut branch or stump. You can review the full Product Label Here prior to purchasing to see if you feel it would fit your needs.

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Asked by Doug from Laurelville Ohio

05/17/2023

Q

Will Helena Crossbow Herbicide kill cattail in a ditch?

A

Crossbow Herbicide is not labeled to control cattail. You may check out Roundup Custom Aquatic Terrestrial Herbicide as it may be applied to ditches to kill cattail. Please refer to product label for further instructions.

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Asked by Tom from Mt Olive, Nc

06/02/2022

Q

Will Helena Crossbow Herbicide Kill bamboo?

A

Crossbow Herbicide is not labeled for bamboo, however we have heard if you cut down the bamboo level with the ground and apply Crossbow or a similar Triclopyr based product undiluted to the fresh cut it can help kill it out. Bamboo is extremely stubborn, so it can take several steps to remove i…
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Crossbow Herbicide is not labeled for bamboo, however we have heard if you cut down the bamboo level with the ground and apply Crossbow or a similar Triclopyr based product undiluted to the fresh cut it can help kill it out. Bamboo is extremely stubborn, so it can take several steps to remove it completely. You can use Round Up QuickPro at the highest listed usage rate to help eliminate bamboo. You will be required to cut the bamboo down to a short stump and then apply the Round Up QuickPro. It can take several applications to achieve the desired results.

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Asked by Rosalie from Maryville

04/01/2023

Q

Will Crossbow herbicide be effective on wintercreeper in Early April in southwest Illinois?
Wintercreeper is invading my crepe myrtle vinca minor

A

Helena Crossbow Herbicide is not labeled to control wintercreeper/Euonymus/spindle though the active has been used for control. That is a kind of evergreen plant, so you would likely need to cut the plant down and then immediately treat the cust with glyphosate or triclopyr to prevent regrowth.

…
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Helena Crossbow Herbicide is not labeled to control wintercreeper/Euonymus/spindle though the active has been used for control. That is a kind of evergreen plant, so you would likely need to cut the plant down and then immediately treat the cust with glyphosate or triclopyr to prevent regrowth.

Keep in mind that a product that can kill the wintercreeper can also harm your vinca minor (or other groundcovers) and the crepe myrtle. So physical removal and/or careful spot treating with a non-selective herbicide will pose much less risk to the desirable plants.

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Asked by L. from Missouri

02/23/2023

Q

Will Crossbow kill Wintercreeper? We have it thick on almost a half acre surrounding our house.

A

Although not directly listed on the label, Crossbow contains Triclopyr which is known to be used on wintercreeper, we just cannot confirm that it would kill it since off label. Products containing Glyphosate are also used for treatment.

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Asked by Clay from Ridgefield, Wa

01/20/2023

Q

Will Crossbow harm dormant Snow Berry bushes?
I have a fence row of Snow Berry bushes that are slowly being taken over by blackberries. I've read Crossbow will kill dormant Blackberries, but I don't want to kill the Snow Berry bush too.

A

Crossbow Herbicide could injure desirable ornamentals plants. Care should be taken to avoid any contact and very carefully spot treat the weeds directly in these areas.

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Asked by Daniel from Skillman, Nj

01/12/2023

Q

Can I sell hay from a field treated with Crossbow or do I need to wait a full season?

A

Hay may be harvested 14 days after applying Crossbow.

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Asked by Moses from Hillsboro, Oregon

09/28/2022

Q

Is there any danger in handling plants killed by Crossbow?
I treated some blackberry bushes with Crossbow a few months ago. Now that the weather is cooling off, I'm wanting to clear out the dead vines. Is there any danger in handling the dead vines? Any precautions I should take?

A

Other than wearing normal work gloves to protect your skin from scratches and sharp parts of the plant when handling it, there would not be any need for gloves from a chemical standpoint as long as the surfaces aren't wet from an application of Helena Crossbow Herbicide. If everything is dry yo…
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Other than wearing normal work gloves to protect your skin from scratches and sharp parts of the plant when handling it, there would not be any need for gloves from a chemical standpoint as long as the surfaces aren't wet from an application of Helena Crossbow Herbicide. If everything is dry you can handle the treated bushes like normal to dispose of them.

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