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Description
iron x herbicide Captain Jack's Lawnweed Brew Selective Post-Emergent Weed Killer (Home – Green Earth Ag & TurfIron Selective Weed Killers (For Spraying on Turf to Kill Only Weeds) Captain Jack's Lawnweed Brew (formerly Bonide Weed Beater Fe)* is a selective, broadleaf weed killers that kill only the weeds and not the desired turf. Similar to FIESTA, the specially formulated iron solution in Captain Jack's Lawnweed Brew is a game changers in the organic lawn care industry, a weed killer that does not contain toxic synthetic compounds. The choice of
Iron Selective Weed Killers (For Spraying on Turf to Kill Only Weeds)
Captain Jack's Lawnweed Brew® (formerly Bonide Weed Beater® Fe)* is a selective, broadleaf weed killers that kill only the weeds and not the desired turf. Similar to FIESTA, the specially formulated iron solution in Captain Jack's Lawnweed Brew is a game changers in the organic lawn care industry, a weed killer that does not contain toxic synthetic compounds. The choice of professional applicators, this iron-based weed killer leaves lawns healthy and weed-free, now in small, easy-to-use sizes!
Captain Jack's Lawnweed Brew works quickly, delivering visible same-day results, even in cool weather. With a unique ground breaking iron-based formulation, Captain Jack's Lawnweed Brew 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 application (entire lawn) or spot treatment, Captain Jack's Lawnweed Brew helps your lawn look its best without toxic, environmentally-harsh synthetic chemicals. Now you can treat your own lawn with professional-grade results!
For larger concentrated formulas for your selective weed killer needs, check out FIESTA!
*Compared to Iron-X™ and Pulverize™ weed killer for lawns, Captain Jack's Lawnweed Brew are the same formulations available for much lower prices; but with the great technical service from the scientists at GrowItNaturally.com!
Bonide Captain Jack's Lawnweed Brew 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 about 1/8 the price!
Bonide Captain Jack's Lawnweed Brew Application Instructions
Bonide Captain Jack's Lawnweed Brew (Concentrate) Application Instructions
Large Areas (Broadcast Sprays):
- Add 5 oz. of Weed Beater Fe per gallon of water.
- 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).
- Repeat in 3-4 weeks for optimal knockdown of weeds.
Spot Sprays:
- Use 5 oz. of Weed Beater Fe per gallon of water and spray enough to wet weeds as needed.
Captain Jack's Lawnweed Brew Ready-To-Use Application Instructions
- Shake well before use.
- Do not dilute.
- Thoroughly spray weeds.
- Use a coarse nozzle setting to reduce drift.
- Repeat treatment in 3 to 4 weeks for best results.
Bonide Captain Jack's Lawnweed Brew 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.
Bonide Captain Jack's Lawnweed Brew Ingredients
Captain Jack's Lawnweed Brew Ready to Use:
Iron HEDTA (FeHEDTA) ............ 1.5%
Captain Jack's Lawnweed Brew Concentrate:
Iron HEDTA (FeHEDTA) ............ 26.52%
Captain Jack's Lawnweed Brew Available Sizes
- 1 Quart Ready-To-Use Trigger Sprayer (Coverage Varies by Use).
- 1 Quart Hose-End Sprayer (Coverage Varies by Use).
- 1 Gallon Ready-To-Use Sprayers (Coverage varies by Use).
- 1 Pint Concentrate (Covers 1,250 Square Feet).
- 1 Quart Concentrate (Covers 2,500 Square Feet).
For larger concentrated formulas for your selective weed killer needs, check out FIESTA!
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4.4 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 4
Very nearly the perfect frother for all your basic frothing & mixing needs
Color: Black
There are a lot of middle-of-the-road frothers out there. I've been through a few of them in my recent search for something that could mix and froth well, without taking up any more outlets in my basement kitchen. Of the three Maestri frothers I've tried so far, this one wins the race by a nose.
Most recently, these Maestri frothers come in basically three versions: A single-speed @ 8000 RPM, a two-speed @8000/5500 RPM, and this stepless variable-speed version. Aside from that, the only real difference in recent version pack-outs is which attachments they come with.
Look over the reviews of the single-speed version and you'll find that while it can and does froth well, it starts at a single, high speed and gets there fast. This makes it pretty easy to spin liquid right out of most common cups and mugs.
There is a two-speed version, but it's harder to find, only comes in one color (Grape Purple), and while it's much better than the Maestri single-speed, it still has a couple of quirks that make this variable-speed version win out.
This mixes and froths whole milk, half-and-half, or heavy whipping cream, or just about anything else very well. Like all frothers, it takes a little time to learn its nuances and nail down the technique, this will definitely get you there.
The best feature of this is easily the speed control. Turn the knob to turn it on at a low speed that's great to get things started, then turn the knob to crank up the speed just enough to do what you need, whether that's mixing or frothing. The low starting speed makes it easy to keep things under control without undue spilling, and the max speed is more than enough to make quick work of getting your froth on.
There are really only two complaints I have with this stepless, variable speed version:
- I'd really like to have a Press On / Release Off button in addition to the Speed Control knob. More than one time have I gone to turn this off, only to spin the knob the wrong way and crank the speed up to ludicrous, sloshing liquid on the counter. Being able to turn it Off just by letting go of the button would be quick and easy. This configuration would allow using a preferred speed right from the start, while still allowing speed to be adjusted on-the-fly when needed.
- Give it a bigger battery. It would cost mere pennies to give this a 2000mAH+ instead of a 1200mAH battery, and I can't think of any reasonable downside to that.
- Give the motor a little more torque. It's fairly easy for the current motor, at any speed, to get bogged down in a thick protein powder mix, or when pressing the frother or other attachment a bit too hard into the bottom or side of the frothing container. A bit more "oomph" would prevent that.
I really like the overall design and features of thes Maestri frothers better than many other, cheaper versions. This variable-speed version is pretty great as it is and probably the one I would recommend over the single- or two-speed, for most people. But I often find myself using two hands -- one to hold it steady, and the other to turn it on and tweak the knob to the desired speed(s) -- for a device that should arguably need only one hand to use. Just a couple of minor tweaks as noted above would make this the overall best frother of its type that I've used.
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Reviewed in the United States on May 23, 2025
★★★★★ 5
Hands down, the BEST handheld frother I've ever used!
Color: Black
Hands down, the BEST handheld frother I've ever used! I got the black one, but any color will have the same results.
Over the past 12 years or so, I've used so many different handheld frothers and they've ALL fallen short of expectations for quality, longevity, power, features, and usability.
I've used everything from cheap, $15 models to $50+ models and everything in-between. Some with fancy attachments for various types of mixing, frothing, beating, whipping, etc. Some with rechargeable batteries, some without. Some AC powered, some with fixed whisks, some with detachable/replaceable whisks, some with stands, etc. NONE have been spectacular. Most broke within 6 months and got tossed. ALL were major disappointments in the end, including the "revered" Zulay models of which I tried several.
I finally found this Maestri House branded, variable speed frother with detachable / replaceable whisks and got one to try. I was literally on Cloud Nine the first time I turned it on. Like, WOW! Not only was it FAST on the highest speed, but it was powerful enough to churn right through milk, eggs, cream, etc, without bogging down like many others.
This thing makes milk froth like a milkshake and Matcha Lattes like nothing else I've ever experienced. I used to have to sift my Matcha, then whisk it in hot water, then froth milk and then blend them together to make the perfect latte. and if the milk was cold (my preference), pre-whisking in hot water was a must to avoid lumps. However, with THIS frother? I literally pour my milk into a tall tumbler, drop in un-sifted Matcha powder, and spin up the Maestri House frother at first on a medium low speed to get it mixed, then jump straight to the highest speed to really whip that milk and match up. After about 30-45 seconds, I've got the thickest, richest, smoothest, most aerated latte around. And NO LUMPS at all!!! What a time and dish saver!
And cleaning? I just run it under hot running water to get the shaft cleaned and then spin it up in a dish with hot running water for a few moments, then spin it on high for a few seconds in the air to dry it off instantly.
Now, I'll be honest here, too. The specs say it can go months on a charge, using it for a couple minutes a couple times daily. Well, I guess it could do that and still spin. But I use it FULL SPEED, churning hard for at least a minute a couple times per day. After about 2 weeks, I can start to notice a speed reduction so I just plug it back in on the charger. All things considered, this is still better than all the other handheld frothers I've used over the years.
After using the heck out of this thing for the past 7 months, I've even decided to start selling these in our Japanese gift shop. The manufacturer is has been very responsive both in customer support (I called them about an issue I thought I was having, and they called me back with a couple hours even though I didn't leave voicemail when they didn't answer right away) and in reseller support. I have to give these guys an A+ for responsiveness and quick resolution when problems might arise.
HIGHLY recommended!!
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Reviewed in the United States on October 17, 2025
★★★★★ 5
Great Addition!
Color: Black
Why did you pick this product vs others?:
I just started a powdered drink routine recently and was having a difficult time mixing it with water. I would consistently end up with small nuggets of mix making it unenjoyable to drink. I knew I needed a mixer and was glad I found this device when I did. It works perfectly! I like the fact that it comes with its own stand and included two mixing heads. It is solid, well-designed, and you can feel the quality when you pick it up. The variable speed of the mixer is perfect for ensuring that everything is blended well. I haven’t used it to “froth” anything yet, at least not on purpose, but I accidentally found out that it can do that well. This is a great addition to our kitchen and is very easy to wash after use. So far…no issues. Highly recommend for those of you looking for the right tool to make sure those protein mixes aren’t full of unmixed nuggets.
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Reviewed in the United States on June 21, 2025
★★★★★ 4
Low foam
Color: Black
Love this frother. It is great quality and the turn speed is amazing. My only issue is this. It comes w 2 wands and they are both singles. The single is great for stirring things up. It does not make a lot of froth and for some things it’s perfect but sometimes I like a lot of froth and I wish it either came w a single and a double or you could purchase a double separately to intermix. I don’t want to buy a whole other unit just for the double. I wrote to them bc the double frother they sell doesn’t look as good as this one but sometimes a girl needs a lot of foam and sometimes th stirring is perfect.
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Reviewed in the United States on February 20, 2026
★★★★★ 5
Mixes my protein shake powder
Color: Blue
My husband and I both drink protein shakes daily. We have vortex mixers that work great, but they are plastic and getting old, and really needed to be replaced.
In an effort to reduce microplastics in our lives, I am trying to use less plastic mixing cups. I couldn't find anything small enough (other than regular blenders) with glass and metal parts that would work well for us.
During my search on here, several frothers showed up. This one caught my eye because of the amount of sales, quick delivery, and of course, decent pricing. Some of the reviews had me a little skeptical, and time will tell regarding the longevity, but so far I am pleased.
My protein powders are on the heavy side, but this little frother really gets the job done. Instead of having to use separate mixing cups (saving me on dishwashing), I just use my morning coffee cup (it's big enough) to mix my protein shake in. My husband just uses a regular glass.
Neither of us can believe the power this little thing has. We are getting smooth shakes!
Here is what I really like about it: It is powerful and mixes well; the frother is metal and not plastic; it cleans extremely easy; after making several shakes the battery has not died; can be used in glasses, coffee cups, even disposable cups (when we buy donut shop coffee); and I love the little stand which takes up barely any counter space. Less plastic, less clean-up, dependable (so far), and small, making it convenient even for travel.
I'm really glad I got this, and hope it will last. One last thing, do not turn it on while cleaning under running water. (Yes, you can laugh.)
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Reviewed in the United States on April 20, 2026