Crossbow Herbicide applications should be kept at least 15 feet from edibles. Per the label, do not apply under circumstances where spray drift may occur to food, forage, or other plantings that might be damaged or crops thereof rendered unfit for sale, use or consumption. You should discard any edibles that may have been contaminated. You will need to wait at least 1 year after application to plant any edibles intended for human consumption. That being said, generally, the shelf life of Crossbow Herbicide is 3-5 years if stored in a area that does not allow the product to freeze or reach over 80 degrees. We would recommend contacting the manufacturer directly at 901-761-0050 for further information on how you should proceed since the product was used off label.
Yes, Crossbow Herbicide is labeled to kill cottonwood at the rate of 1.5 gals./acre broadcast application or 1 to 1.5% mixture.
Please view the full product label for more information.
Helena Crossbow Herbicide is labeled for leafy spurge and thyme-leaf spurge but does not list prostrate sandmat (prostrate spurge).
Alternative post emergents to kill prostrate spurge (sandmat) would be Ferti-lome Weed-Out Lawn Weed Killer with Trimec or Monterey Spurge Power.
Please view our Spurge Treatment Guide for additional information and product recommendations.
Per the product label, it is recommended to not allow people or pets to enter the treated area with Helena Crossbow Herbicide until the treated area has dried.
Helena Crossbow Herbicide would harm your hydrangeas, rhododentrons and other desirable ornamentals, flowers or plants if they were directly sprayed or contacted through spray drift. If the berry vines you wish to treat DO NOT have direct contact with the hydrangeas or rhododentrons and are NOT within the drip line of the desriable ornamentals, direct injection treatments to the vines should be fine.
As advised per the product label, “Do not apply Crossbow* directly to, or otherwise permit it to come into direct contact with cotton, grapes, tobacco, vegetable crops, citrus, flowers, fruit or ornamental trees, or other desirable broadleaf plants and do not permit spray mists containing it to drift onto them.
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.
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.
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.
We do not recommend burning any wood after it has been treated with an insecticide or a herbicide like Helena Crossbow Herbicide .
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.
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.
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.
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.
The best method to remove woody plants and shrubs is to first cut down them down to their stump and apply Helena Crossbow Herbicide on the fresh cut or spot treat as best as you can. If enough of the solution contacts the young trees roots it could injure them.
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.
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.
