Helena Crossbow Herbicide Help - Questions and Answers

Helena Crossbow Herbicide

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Helena Crossbow Herbicide

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Asked by Steven from Quinault, Wa.

04/30/2021

Q

Is crossbow effective in killing juncus effusus on pasture land and if so what mix would you recommend?

A

Helena Crossbow Herbicide is not labeled for juncus effusus also known as common rush or green bull rush. The 2,4D Amine Herbicide is labeled for rush control in pastures, but you will want to review the Product Label to be sure it meets all of your needs for your treatment area and use. The suggest…
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Helena Crossbow Herbicide is not labeled for juncus effusus also known as common rush or green bull rush. The 2,4D Amine Herbicide is labeled for rush control in pastures, but you will want to review the Product Label to be sure it meets all of your needs for your treatment area and use. The suggested rates are 2 quarts per acre with a surfactant used at roughly 1 quart per 100 gallons of water per acre. You can read more about Rush control on this article from NC State.

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Asked by Robert from Lake Stevens, Wa

04/30/2021

Q

Does Helena Crossbow Herbicide have Iron Oxides in it?
I need to kill weeds that are coming up through my artificial turf and it needs to be free from iron oxides.

A

The Helena Crossbow Herbicide does not state anywhere on its product label, or its SDS (safety data sheet) that it contains iron oxides or any form of iron. You should be safe to use this on your artificial turf lawn, but if you have further questions you can reach the manufacturer directly at 901-7…
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The Helena Crossbow Herbicide does not state anywhere on its product label, or its SDS (safety data sheet) that it contains iron oxides or any form of iron. You should be safe to use this on your artificial turf lawn, but if you have further questions you can reach the manufacturer directly at 901-761-0050.

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Asked by Deborah from North Rose, Ny

05/06/2021

Q

Will Crossbow kill the plants I have on my hill?
The plants that are well established on my hill are; Hosta, English Ivy, Peony, Bearded Iris, Vinca Major.

A

Crossbow Herbicide can typically control any woody brush type plants such as ivy, briars, trees, and many weeds. While not labeled to control the other plants you mentioned, its very highly likely it would also kill those if it was sprayed on them or if it got into their root system. If these are de…
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Crossbow Herbicide can typically control any woody brush type plants such as ivy, briars, trees, and many weeds. While not labeled to control the other plants you mentioned, its very highly likely it would also kill those if it was sprayed on them or if it got into their root system. If these are desirable plants you want to not harm, we would not recommend using the Crossbow near them.

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Asked by Lee from Hudson

05/12/2021

Q

What's a good handheld spray pump to use with Crossbow mix?
The ones I've used fail from the pump parts deteriorating after use.

A

Helena Crossbow Herbicide is very oily, so you want to be sure that you are not leaving any product in the sprayer for more than about 24 hours and that you are cleaning your sprayer thoroughly after each use.

Any of the hand pump sprayers that we sell can be used to apply this and other herbicid

…
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Helena Crossbow Herbicide is very oily, so you want to be sure that you are not leaving any product in the sprayer for more than about 24 hours and that you are cleaning your sprayer thoroughly after each use.

Any of the hand pump sprayers that we sell can be used to apply this and other herbicides, just be sure that you always clean the sprayer between uses and let it air dry completely before storing.

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Asked by Hugh from Bay Minette

05/23/2021

Q

Will Crossbow kill trifoliate plants in pasture? What amount per gal of water?

A

Helena Crossbow Herbicide is labeled to kill many broadleaf weeds, poison oak, woody brush, etc. Please check the product label for the specific Trifoliate plant you are targeting.

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Asked by Brandon from Owensboro, Ky

05/25/2021

Q

Why is there a delay of 3 weeks for planting vs 2 yrs for garden vegetables with Crossbow Herbicide?
Previous answers had some suggestions with replanting timelines and I'm curious if it's due to human consumption or plant growth with the previous responses

A

Correct, the replanting time will be considerably longer for vegetables for human consumption when using Helena Crossbow Herbicide as it is not labeled to be used around them and traces can persist in the soil for up to 2 years.

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Asked by Jes from Chicago Illinois, Zone 5

06/14/2021

Q

Will Crossbow kill Horseradish shoots that are comin up around Hibiscus plants? Should the Hibiscus plants be removed to treat the horseradish shoots and then replanted? How long would we need to wait to replant in that area?

A

Helena Crossbow Herbicide could kill or at least suppress horseradish plants however, it is not labeled specifically for this application. Horseradish can be prolific quite easily, so it is best to dig out the plants each year, being careful to get every possible root you can so that there are no r…
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Helena Crossbow Herbicide could kill or at least suppress horseradish plants however, it is not labeled specifically for this application. Horseradish can be prolific quite easily, so it is best to dig out the plants each year, being careful to get every possible root you can so that there are no remaining fragments that can grow into new plants. The Crossbow is not safe to use around hibiscus or other desirable ornamental plants, and can last up to 12 months in the soil and inhibit seed germination or plant growth. If you feel like the horseradish has invaded the area badly, then you could transplant the hibiscus but just be aware that you will need to be careful not to take any of the horseradish roots to a new location.

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Asked by Marilyn from West Palm Beach

06/15/2021

Q

What is the setting on an Ortho Dial Hose End Sprayer for using Helena Crossbow Herbicide on a lawn to kill wild violets?

A

Helena Crossbow Herbicide is not labeled to be used on turfgrass or lawns for weed control as it can injure the turfgrass. Also, this product is not intended to be used in a hose end sprayer like the Ortho Dial N Spray Hose End Sprayer and should be applied using a handpump sprayer, backpack spray…
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Helena Crossbow Herbicide is not labeled to be used on turfgrass or lawns for weed control as it can injure the turfgrass. Also, this product is not intended to be used in a hose end sprayer like the Ortho Dial N Spray Hose End Sprayer and should be applied using a handpump sprayer, backpack sprayer or pull behind sprayer. Please review our How to Treat for Wild Violet Treatment Guide for herbicide recommendations for treating wild violets.

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Asked by Bob from Springfield,tn

06/22/2021

Q

Two trees growing together will Helena Crossbow Herbicide effect them?
Will my magnolia bush absorb crossbow in its roots if I spray foliage of unwanted tree that is growing in the same root system?

A

Yes, the magnolia could absorb the Helena Crossbow Herbicide once applied as it stays in the soil for up to 1 year.

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Asked by Allen

07/29/2021

Q

Will Helena Crossbow Herbicide kill witch grass?

A

No, Helena Crossbow Herbicide is not labeled for witchgrass.

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Asked by Tom from Vinemont Al

08/15/2021

Q

Will Helena Crossbow Herbicide kill armyworms?

A

No, Helena Crossbow Herbicide is herbcide labeled for woody plants and brush. This is not an insecticide that will armyworms or other insects. Bifen IT is a popular choice for tent caterpillars aka armyworms and applied at the mix rate of 0.5 fl oz to 1 fl oz per gallon of water. Per the Bifen …
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No, Helena Crossbow Herbicide is herbcide labeled for woody plants and brush. This is not an insecticide that will armyworms or other insects. Bifen IT is a popular choice for tent caterpillars aka armyworms and applied at the mix rate of 0.5 fl oz to 1 fl oz per gallon of water. Per the Bifen IT product label to treat for armyworms: Directly spray the plant foliage and nest. The larvae are usually easy to contact if spraying is done in the late morning when the larvae congregate on the tent surface to warm in the sun. Mechanical control is also helpful with this pest. The egg masses are easy to spot after the leaves have dropped in the fall. Simply clip off and crush or drop into a bucket of soapy water.

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Asked by Colleen from Delia, Ks

08/16/2021

Q

What would cause the pump in our 45 gallon sprayer to quit while applying Crossbow Herbicide?
We sprayed crossbow through a 45 gallon sprayer and the pump quit

A

No, as long as you dilute what you need to use at a time Helena Crossbow Herbicide will not damage the pump of your sprayer. However, it is not recommended to store any pesticides in a tank for long periods of time because this will wear out the gaskets and pump faster. Mix what you will need to use…
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No, as long as you dilute what you need to use at a time Helena Crossbow Herbicide will not damage the pump of your sprayer. However, it is not recommended to store any pesticides in a tank for long periods of time because this will wear out the gaskets and pump faster. Mix what you will need to use within 24 hours and rinse out your sprayer after each use. Since your sprayer is a 45 gallon tank, we also recommend checking with the manufacturer.

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Asked by Gary from Charlotte, Nc

08/20/2021

Q

Accidentally sprayed a 1500 square foot Royal Purple Liriope yard with Helena Crossbow Herbicide thinking I grabbed a different container. Realized 15 min into spraying and immediately washed every single plant thoroughly with plain water hoping the plants didn't absorb it. Did I make this worse by the washed off application now being in the soil? Is there any chance my plants will survive?

A

Unfortunately, the extent of injury to the Royal Purple Liriope and soil is going to be difficult to determine. With the product label precautions and advising to be cautious of wind drift, preventing overspray and to avoid spraying desirable plants with Helena Crossbow Herbicide, it is really a wa…
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Unfortunately, the extent of injury to the Royal Purple Liriope and soil is going to be difficult to determine. With the product label precautions and advising to be cautious of wind drift, preventing overspray and to avoid spraying desirable plants with Helena Crossbow Herbicide, it is really a wait and see. The product label states, excessive amounts of this herbicide in the soil may temporarily inhibit seed germination and plant growth. The residual of Crossbow Herbicide in the soil can remain for up to 1 year therefore it is recommended to wait 1 year after an application to replant in the treated areas. Otherwise, remove and replace the soil with fresh untreated soil, wait 3 weeks to replant in that area where the Crossbow was applied.

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Asked by Stephanie from Hotchkiss, Co

08/23/2021

Q

After the application of Helena Crossbow Herbicide has dried, will the use of flood irrigation cause the herbicide to separate from vegetation and soil be carried across the land via corugates across the field.

A

While the product label for Helena Crossbow Herbicide does make reference to "non-irrigation ditchbank," this question is a little bit outside our area of expertise. We recommend contact the manufacturer directly Helena Agri-Enterprises at (901)761-0050.

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Asked by Sam from Toledo. Oregon

09/03/2021

Q

I sprayed Helena Crossbow Herbicide in my shed to kill ivy coming through the cracks. How long before I can re enter and use the shed?

A

Helena Crossbow Herbicide is not labeled to be applied indoors therefore we would recommend contacting the manufacturer for further details on the off label use for further safety and re-entry information. In the future, we would recommended to trim/cut the ivy from the outside that is growi…
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Helena Crossbow Herbicide is not labeled to be applied indoors therefore we would recommend contacting the manufacturer for further details on the off label use for further safety and re-entry information. In the future, we would recommended to trim/cut the ivy from the outside that is growing on the side or into the shed. Apply Helena Crossbow Herbicide directly to the freshly cut ivy and hand pull or manually pull ivy out from the cracks and gaps going into the shed.

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Asked by Jeff from Martinsville, In

09/04/2021

Q

Will Helena Crossbow Herbicide kill unwanted zoysiagrass that is growing in my lawn?

A

Crossbow Herbicide is not labeled to control zoysiagrass and unfortunately, there is not a selective herbicide labeled to control zoysiagrass. The best recommendation would be to spot treat the unwanted grasses with a glyphosate product like Roundup Quik Pro and reseed 2 weeks after the last applica…
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Crossbow Herbicide is not labeled to control zoysiagrass and unfortunately, there is not a selective herbicide labeled to control zoysiagrass. The best recommendation would be to spot treat the unwanted grasses with a glyphosate product like Roundup Quik Pro and reseed 2 weeks after the last application as it may take multiple applications to kill it.

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Asked by Tenley from Columbia

09/15/2021

Q

Will crossbow kill Japanese sedge ?

A

While Crossbow is labeled to to treat woody plants and vegetation, Japanese sedge is not specifically listed on the product label as a controlled weed and it is not labeled for sedges at all.

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Asked by Jean-marc from Peoria, Az

09/27/2021

Q

Can wood be burned that was treated with Crossbow Herbicide?
Tree was killed using Crossbow by pouring into bored holes into the trunk. The tree completely died and cut down. Is it safe to burn the wood?

A

We do not recommend burning any wood after it has been treated with an insecticide or a herbicide like Helena Crossbow Herbicide .

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Asked by Tom from Burnsvill, Nc

02/14/2022

Q

Can I mix a 20-20-20 liquid fertilizer with Crossbow in a tank mix for one application using a 200 gallon skid sprayer?

A

Helena Crossbow Herbicide should be used with a straight liquid nitrogen fertilizer for the best compatibility. Mixing with N-P-K solutions or suspensions may not be satisfactory even with the addition of compatibility aid. If using one with N-P-K then you can apply before or after application bu…
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Helena Crossbow Herbicide should be used with a straight liquid nitrogen fertilizer for the best compatibility. Mixing with N-P-K solutions or suspensions may not be satisfactory even with the addition of compatibility aid. If using one with N-P-K then you can apply before or after application but allow 2 hours for Crossbow application to dry before watering in if needed. Refer the to the Liquid Nitrogen Fertilizer Section at the bottom of page 7 of the product label for more information.

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Asked by Marcia from Papillion

03/26/2022

Q

Is the container of Helena Crossbow Herbicide still good if it has frozen?

A

Helena Crossbow Herbicide has a shelf life of 3 to 5 years as long as it is stored in a cool, dry place. The product may have lost some efficacy depending on how long it was stored in the area it froze and how long it was frozen for. You can test it by treating a small area to see if the efficacy ha…
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Helena Crossbow Herbicide has a shelf life of 3 to 5 years as long as it is stored in a cool, dry place. The product may have lost some efficacy depending on how long it was stored in the area it froze and how long it was frozen for. You can test it by treating a small area to see if the efficacy has been affected.

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