Roundup Products

Roundup is a nonselective (kills everything) herbicide that is widely used to kill weeds. It is the most popular herbicide on the market due to its ability to kill to the roots and show fast results.

Roundup and glyphosate (the active ingredient) have been under attack in recent years due to a whole host of legal cases. In this article we will be discussing the chemical and its proper use only. For more information on our stance on the safety of Roundup, please click our pesticide disclaimer below.

Helpful Links Regarding Pesticides:

How to Use Pesticides Safely & Effectively
Our Pesticide Disclaimer for Controversial Products & Pollinators

How to Use & When to Apply:

– The rule of thumb with Roundup: Whatever you spray, Roundup will kill. It is a contact/foliar herbicide that is absorbed into the leaves and taken down into the roots of the plant for a complete kill. When used as directed, Roundup does not have any activity in the soil. So spraying the ground has no effect on the weeds. It only works when it’s sprayed directly onto the leaves.

– Since Roundup is a nonselective herbicide, take care and caution to protect desirable plants nearby the spraying site. Many gardeners effectively use large pieces of cardboard or even buckets or blankets to protect nearby ornamentals while spraying weeds. Avoid spraying on windy days to avoid drift.

– Apply when leaves are dry and weather is mild. Weeds need to be actively growing for Roundup to be effective. Spray must be on the leaves. Coat herbicide to the point of coverage but not dripping. Many Roundup products are rain safe within a half hour but read the label for specific instructions.

Pros to Using Roundup Products

  • Kills everything you spray–no need for different herbicides to get the job done.
  • Great for gardens, driveways, fencelines, or brush areas. 
  • Strong action to the root kills most difficult weeds.
  • Rainproof in minutes and results can be typically seen within a few hours.

Cons to Using Roundup Products

  • Kills everything you spray, including ornamentals and desirable plants.
  • Like all herbicides, wind drift (even in a gentle breeze) can blow tiny herbicide particles through the air into surrounding plants that you don’t want to kill.
  • Will kill lawn grass and turf.
  • Kills most weeds handily but may require reapplication for tougher brush type weeds, such as poison ivy, or honeysuckle if it rejuvenates.

Available Sizes:

Helpful Link: How to Use Pesticides in Their Various Forms

Roundup Ready to Use

Roundup ready to use (RTU) options are pre-mixed with water and are ready for battle right  away when you get them home. No mixing required. Simply point and spray.

There are several different options of RTU styles available. The 30 ounce RTU is a standard model in a squirt bottle. The 1.1 Gallon includes a battery powered Comfort Wand that reduces the amount of stress on your hand when you spray–very easy to use. And the 1.33 Gallon has a small pump that allows the container to act like a spray tank and is completely refillable.

Whichever RTU option you choose, they are all perfect for spot treatments around the house, in the garden, or when weeds appear in your sidewalk, porch, or patio. It is more expensive to buy these chemicals pre-mixed with water, but for small projects you can’t beat them.

Roundup Concentrate

Concentrated Roundup typically gives you the “best bang for the buck” per ounce of chemical. This Roundup is not ready to use right out of the bottle. It requires mixing with water in a spray tank according to the label directions. However, you pay less per ounce than you would with the RTU options.

These concentrates are great for larger yards and gardens where you need several gallons of mix to get the job done. Store in a cool dry place before next use.

Roundup Super Concentrate

Roundup Super Concentrate is the exact same chemical as the concentrated Roundup in the option above–just supercharged! It is more expensive, but you need to use less chemical per gallon of water than the normal concentrate. Great for large properties or farms where large quantities of Roundup are needed.

Roundup Gel

This new applicator allows you to use Roundup without spraying! It looks and applies much like a deodorant stick. This applicator is perfect for situations where weeds are growing closely to desirable ornamental plants. It allows you to apply herbicide to the targeted weeds without worrying about drift in the wind.

Roundup Extended Control


Roundup Extended Control is built for killing weeds and preventing new ones from growing for up to 4 months. Along with killing weeds and grass like typical Roundup, this product applies a chemical barrier on the ground that will stop new weeds from sprouting. Does not last an entire season but the extended control is nice to have along fence lines, in driveway cracks, or along walkways and patios.


Available in two sizes of RTU: a 24 ounce bottle for small spot sprays and a 1.1 gallon container with a battery powered Comfort Wand (which is great for driveways and sidewalks). Also available in a 32 ounce concentrate form for larger projects.

Roundup 365 Max Control

This product is very similar to the Roundup Extended Control above, except it prevents weeds for an entire year rather than 4 months. Comes in a convenient 1.33 gallon container with a battery powered Comfort Wand as well as a 32 ounce concentrate for mixing. Will kill grasses and weeds and prevent regrowth for 12 months.

Roundup Poison Ivy Killer


Roundup Poison Ivy Killer is specially mixed to attack stronger weeds like brush and poison ivy. Includes the active ingredient triclopyr for even more systematic killing action to the root. This product is great for overgrown areas that have a mix of woody and herbaceous weeds or if your yard is being overrun with brush.

This product follows the same principles and rules as any other Roundup product. But keep in mind that strong brush may rejuvenate even after the first round of application. In typical cases when you have heavy brush, the first application of Roundup Poison Ivy Killer will knock back the brush quite a bit, but may or may not completely kill it. Sometimes brush such as honeysuckle, poison ivy, or autumn olive will be able to regenerate because it has a strong root system. In this case, simply wait for regrowth to occur so you have leaves to spray, and reapply the chemical. The key is to wait for enough regrowth so enough chemical is able to be absorbed into the plants and translocated down into the root system for a complete kill.

Roundup Poison Ivy Killer is available in two sizes of ready to use: a 32 ounce spray bottle and a 1.33 gallon RTU container with a comfort wand. Also available in a 32 ounce concentrate for larger projects.

Recommended by Matt

Hello and welcome! I'm Matt and I started Mid Atlantic Gardening to help gardeners in the Mid Atlantic (and beyond!) with their lawn and garden problems and issues.

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