Doctor Kirchner Natural Weed Killer

Last updated date: April 3, 2022

DWYM Score

8.6

Doctor Kirchner Natural Weed Killer

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We looked at the top Weed Killers and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Weed Killer you should buy.

Update as April 20, 2022:
Checkout The Best Weed Killers for a detailed review of all the top weed killers.

Overall Take


In our analysis of 40 expert reviews, the Doctor Kirchner Natural Weed Killer placed 7th when we looked at the top 10 products in the category. For the full ranking, see below.

From The Manufacturer

Doctor Kirchner Natural Weed Killer allows you to maintain a weed free garden and landscape as you still care for the environment. Our family Florida based business appreciates your support – To produce our product we have simply borrowed grandmas safe weed killer recipe and supercharged it. Our Natural Weed Killer quickly and safely takes care of your spot treatment weed killing needs. Ready to spray, this pet friendly weed killer is made from ocean water, food grade commercial vinegar and a dash of soap. We pride ourselves in our workmanship by filling, labeling, packing and shipping every bottle from our location in Fort Pierce, FL.

Expert Reviews

User Summarized Score

8.6
1,334 user reviews

What experts liked

Quick results
- Good Housekeeping
All natural ingredients safe for use around pets and children
- Bob Vila
Doctor Kirchner could be used sparingly in flower beds and around other delicate plants, where you have the patience and need for multiple, careful applications.
- Your Best Digs
What makes the Doctor Kirchner Natural Weed Killer unique is that it’s made from ocean water, vinegar and soap.
- Family Handyman

What experts didn't like

May need to use more to see results
- Good Housekeeping
Nonselective formula kills all plants
- Bob Vila
...Unfortunately, Doctor Kirchner was only moderately effective. Half the surface area we sprayed showed no visible signs of application.
- Your Best Digs

An Overview On Weed Killers

Also known as herbicides, weed killers are chemicals applied to control and eliminate unwanted vegetation like weeds and crabgrass. They can inhibit a weed’s cell division or photosynthesis and disrupt its amino acid production.

Other weed killers mimic natural plant growth hormones and cause deformities. You can spray them onto foliage or soils, and one of the best-known weed killer chemicals is glyphosate. This chemical is an amino acid disrupter with a broad spectrum and low toxicity to animals.

Chemical-based weed killers are more common, but natural herbicides can also work pretty well. Some contain citrus oil and vinegar, which causes weeds to dry out, curl up and die. These are good for people who have pets and small children, but the chemical counterparts can be just as safe when applied according to the label directions. The best ones work in 24 hours or less, so it’s best to keep everyone away from the area for the time specified on the product label.

Some retailers sell liquid herbicides in smaller, ready-to-use containers or in concentrate form; these methods can be cost-saving. You must apply granular weed control products with spreaders, which is easy to do if you need to cover a whole lawn.

Pre-emergent weed killers are not referred to as herbicides; they are weed preventers and attack sprouting weed seedlings before they emerge from the ground. You’ll want to use these in the spring and fall. Herbicides, which are known as post-emergent weed killers, control existing weeds instead.

The Weed Killer Buying Guide

  • Weedkiller and preventer granules can be combined with dry fertilizer and spread simultaneously. This method is an excellent way to kill two birds (and many weeds) with one stone.
  • Be careful with broad-spectrum weed killers because they are non-selective and may kill desirable plants and grasses. The labels usually specify which weeds the products work on.
  • If you are overrun with a tough weed like nutsedge, choose a selective weed killer that lists the particular one on the label.
  • Herbicides don’t have expiration dates and can last for up to five years. Shake well before using and follow the label directions carefully.
  • Keep the weed container lid on tightly and away from high heat, sunlight, children and pets.