ID Weeds is produced by the University of Missouri's College of Agriculture, Food and Natural Resources' Division of Plant Science.

ID Weeds allows you to search for weeds by their common or latin name, view a list of weeds, or identify weeds based upon a number of different characteristics. Details about each weed are presented, along with photograph(s) of the weed specified.

What's New

Version 3.02

Fixed problem where thumbnails of newly added weeds were not displaying properly.

Ratings and Reviews

Makes it easier to ID those annoying weeds


I've done the image search online, Wikipedia, and the like, but here it is all in one place.

Now, if I understood some of the terminology better (had to look up petiole, ochrea), the search function would probably cut my selection down to just a few, as there are 16 different characteristics to identify your weeds by. And when you open each file, there is more than one picture, showing different stages in the weeds life-cycle, along with more information about the weed than you probably wanted to know, unless you are a botanist.

The only thing it doesn't tell you is how to control or eradicate the weed, but the name of the app is ID weeds, not exterminate them.

One of my problems with the app was that some of the IDs involve pulling the weed, and I planted a wildflower seed garden, and wanted to know whether something I couldn't identify yet (no flowers yet) was something I planted or a weed.

The only reason I didn't give it 5 stars is that:
a) the thumbnails for their weed guesses are tiny, so you often have to open them all up. If they were a little larger, or zoomable (or enlarged when you hovered over them), you could save the time of opening and closing each file.
b) the first picture in each file I looked at wasn't always a close up of a mature (or at least identifiable) plant. Sometimes you had to go 3 or more pictures in to see what the plant looks like when you're likely to be pulling it.

I'd really like to give 4.5 stars, as that's not a deal breaker, just gives them something to shoot for on the next version.

Wow, this app needs a LOT of work


I don't even really want to say that it's a good first try, because really it's not. The search functionality is pretty much useless and hardly, if ever, works. So it basically just becomes a long and monotonous list of every possible weed they chose to include. Even at that, it still fails as scrolling is clumsy, going back and forth from the tiny postage stamp sized preview to the actual grainy "full" photo starts the list at the top all over again! If your fingers can actually get the letter selector to work, the app will not let you scroll up past that letter, which just seems entirely unnecessary.

I will admit it's one of the few apps that even tries and it might be useful to some, but it needs a lot of work to actually be useful as an ipad app. As is, it's a very very rough app.

So if you expect this to magically identify the nuisance plants in your yard, with simplicity and ease, keep looking.
If, however, you just basically want a flat list with tiny thumbnails, grainy photos, and little else in a listing of all possible MO weeds, they chose to include, then this app might be for you.

Pretty Good


I think this is a solid, if not spectacular app for identifying weeds in the south central region. It walks you through a process of questions which limit your choices of possible weeds, the more criteria you select.

Found that some of the more technical questions didn't give any help to the layman except basic (sometimes very cryptic) photos. Some text explanation might be nice.

Also found that when scrolling through plant selections, it would interpret a pause in my scrolling as me choosing that plant and sending me into the detailed plant explanation.

Would really like it if all photos of plant came up when going into detail screen (current version makes me scroll through them).

Would also like if detail provided control strategies.


University of Missouri Extension
56.6 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© The Curators of the University of Missouri


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