best herbicide for weeds in lawn Fiesta Selective Post-Emergent Turf Weed Killer (Pro) – Green Earth Ag & TurfIron Selective Weed Killers (For Spraying on Turf to Kill Only Weeds) Fiesta Selective Weed Killer is a selective, broadleaf weed killers that kill only the weeds and not the desired turf. Using a specially formulated iron solution, Fiesta is a game changer in the organic lawn care industry, the first effective weed killer that Does Not contain the synthetic weed chemicals 2,4 D or Dicamba. The choice of professional applicators, Fiesta iron based

Iron Selective Weed Killers (For Spraying on Turf to Kill Only Weeds)

Fiesta^® Selective Weed Killer is a selective, broadleaf weed killers that kill only the weeds and not the desired turf.  Using a specially formulated iron solution, Fiesta is a game changer in the organic lawn care industry, the first effective weed killer that Does Not contain the synthetic weed chemicals 2,4-D or Dicamba.  The choice of professional applicators, Fiesta iron-based weed killer leaves lawns healthy and weed-free!

Fiesta works quickly, delivering visible same-day results, even in cool weather. With a unique ground breaking iron-based formulation, Fiesta is highly effective and has no unpleasant odor. Pets and people can re-enter the treated area as soon as the spray is dry, the minimal period allowed by the EPA. Suitable for broadcast applications (an entire lawn) or spot treatment, Fiesta helps your lawn look its best without using chemicals that are harsh on human and animal health or the environment. 

The top choice of professionals, we are now excited to offer Fiesta in smaller, more home friendly sizes under the Captain Jack's Lawnweed Brew label.  Now you can treat your own lawn with professional-grade results! 

*Compared to Iron-X^™ and Pulverize™ weed killer for lawns, Fiesta and Captain Jack's Lawnweed Brew are the same formulations available for much lower prices; but with the great technical service from the scientists here in the U.S. at Green Earth Ag & Turf!

Fiesta Benefits

• Liquid selective herbicide that effectively kills broadleaf weeds in the lawn.
• Works fast and weed control can be seen in the same day.
• Three benefits from one application – green-up, post emergent broadleaf weed control, and early post emergent crabgrass control (up to the four-leaf stage) per three years of data from Rutgers University.
• Made with iron, Does Not contain the synthetic weed chemicals 2,4-D or Dicamba.
• People and pets can enter treated area when spray dries.
• No unpleasant odor.
• Rain-fast in 3 hours.
• Effective even in cool weather.
• The exact same product ingredients as Iron X!™ Selective Weed Killer at a fraction of the price!

Fiesta Application Instructions

Large Areas (Broadcast Sprays):

1. Add 5 oz. of Fiesta per gallon of water.
2. Apply 2.5 gallons of water per 1,000 sq. ft. (or 12.5 oz. product per 2.5 gallons of water per 1,000 square feet).
3. Repeat in 3-4 weeks for optimal knockdown of weeds.

Spot Sprays:

1. Use 5 oz. of Fiesta per gallon of water and spray enough to wet weeds as needed.

Fiesta General Application Notes:

• Thoroughly spray weeds to point of runoff.
• Ensure turf is well watered prior to application.
• Do not apply when the daytime temperature will be below 50°F or above 85°F.
• Do not apply to bentgrass.
• Iron can stain some stone, concrete, clothes, equipment and other such things. Any desirable plants or structures accidentally contacted should be rinsed with water.
• Do not apply to stressed lawns, such as drought stress.
• Use standard spray equipment, with a coarse nozzle, such as a hand-held or backpack sprayer.  Hose-End sprayers are not compatible.
• Repeat treatment in 3 to 4 weeks for best results and a longer-lasting weed kill.
• Occasionally a darkening of the grass leaf blades can occur; however the grass will recover within a few days to weeks.
• Allow 3 hours before rain or watering so the product can dry.
• Do not apply during windy conditions to avoid over-spray.
• May leave a rusty stain on concrete, pavers or other lightly colored areas; avoid such areas when spraying turf.

Fiesta Active Ingredients

Fiesta: 
Iron HEDTA (FeHEDTA) ............ 26.52%

Fiesta Available Sizes

• 1 Gallon (covers 10,000 square feet).
• 2.5 Gallon (covers 25,000 square feet).
• 200 Gallon Tote Concentrate (Covers 46 Acres).

For smaller concentrated and ready-to-use formulas for your selective weed killer needs, check out Captain Jack's Lawnweed Brew Post-Emergent Turf Weed Killer.

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Home Orders

Homeowners can now order the same great products that the pros use through our online store by clicking below.