1,000 Weeds of North America

1,000 Weeds of North America

500 - 1,000 downloads

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1,000 Broadleaf Weeds of North America, an Interactive Guide to Identification.

The must-have plant identification app for gardeners, landscapers, farmers, Noxious weed control personnel, botanists, horticulturists, nature-lovers, wildflower enthusiasts, hikers, ranchers, homeowners – for anyone who has ever wondered, “what is that weed?” The app is as useful to the amateur enthusiast as it is for professionals in the field of weed science.

The app allows you to identify plants by specifying characteristics from a variety of categories (e.g. flowers, leaves, stem) and sub-categories (e.g. flower color, leaf shape, stem cross-section). You simply examine your plant and make choices based on its traits. You can choose to focus on very sophisticated characteristics like ovary position, or you can choose to focus on more obvious characteristics such as flower color, plant height, or leaf shape. All characteristics are displayed via detailed scientific illustrations in the interactive botanical glossary, which is as useful to novices as it is to professionals. With each choice you make, the list of possible plants shrinks.

For example, to identify dandelion:

Flower color > yellow: reduces the remaining species from 1,000 to 385
Milky juice > yes: reduces the remaining species from 385 to 44
Plant height > 2 - 4 inches: reduces the remaining species from 44 to 8

Now compare

Highly interactive, the app can even provide suggested characteristics based on ease of use, effectiveness, and the remaining species.

It is easy to confirm your identification by comparing your specimen to the many colored photos or be directed to the specific page number in your favorite weed reference book.


Multiple color images of each species (over 4,000 images)

County/Province-level distribution maps for each species

Page number references for each species in over 50 of the most commonly used weed identification books

An interactive glossary of botanical terminology, with beautiful scientific illustrations

Access to the full data for each species

Alphabetize the species list by either common or scientific name or search by text string

In printed form, the information in the database would be over 4,000 pages!

All images and data can be cached to your Android device, allowing the app to be used in the field where phone and internet access may not be available

Full in-application documentation is available by pressing Menu > Help and can be printed from xidweb.com

This app is based on the 1,200 Weeds of the 48 States and Adjacent Canada DVD (see http://www.xidservices.com ) created by Dr. Richard Old. The interactive DVD is the most comprehensive weed identification reference ever created for North America.

Dr. Old is a renowned national and international speaker on the subject of weed identification and newly invasive weed species. He also chaired the session on Interactive Identification Systems at the XVI International Botanical Congress. An expert in forensic botany, he has worked with many law enforcement agencies to solve crimes where plant evidence was involved (see the Forensic Files episode "The Smiley Face Killer" on Discovery Channel). Dr. Old has been the weed identification specialist for Washington State University since 1976 and has also performed the weed identifications for the University of Idaho for many years. He received the Idaho Weed Worker Hall of Fame award in 1990 and was presented the highest award of the Washington State Weed Association in 2005.

Flora-ID-Northwest.com has used the XID Identification System to produce PC based databases similar to this one for ALL plants, native and naturalized, in 18 western states and 4 Canadian provinces.

Want to create your own interactive database for identification of any subject matter? Contact us!

Richard Old rold@xidservices.com

Illustrations and design by Yuna Wu

Programming by Jeremy Scott


Tags: xid expert identification, 1000 weeds of north america, 1000 broadleaf weeds, leaf identification, weeds of north america, southern broad leaf grass weeds, 1000broadleaf weeds, broadleaf identification key, north american weeds identification, leaf id.

Recently changed in this version

1.0.4 - 5/15/2012
- Added 'filter' menu option for devices that do not have 'search' buttons
- Checks for the presence of both internal and sdcard storage


In an effort to provide the most stable, robust program possible, we are offering a bug bounty: anyone who finds a crash bug and provides information to help us track down the issue will receive a 100% refund of the purchase price. Please contact us via the developer information below.

Lists with 1,000 Weeds of North America

Some lists where this application appears: PLANTS!.

Comments and ratings for 1,000 Weeds of North America
  • (69 stars)

    by Tom Speirs on 10/10/2013

    While it can't help you id all of the 4000+ plants that can be considered weeds when misplaced, it is the most comprehensive guide available. Actually a good deal for ten bucks.

  • (69 stars)

    by John Karp on 30/08/2013

    The search key is really well done, and it's very comprehensive. Overall it could use some polish though. For example the way it stores pictures, they end up mixed in with my photos in my phone's gallery app, slowing it to a crawl. I don't have this probl

  • (69 stars)

    by Lucas Edwards on 17/07/2013

    Update: So I contacted the dev about a refund and got it the same day! Google only gives 15 min to request a refund now so that is in no way the dev's fault. The app is probably best in it's category as far as I'm concerned. However it didn't have what I

  • (69 stars)

    by Marie Morrill on 08/06/2013

    This is a great app. I have 1200 weeds on my computer, Flora of Alberta on my computer at work, and this app on my tablet. I hope they come out with Flora of Alberta for android. They are excellent to deal with as well,

  • (69 stars)

    by victor osaka on 26/12/2012

    I tried a bunch of these. But, this has the best interface and most species of them all.

  • (69 stars)

    by A Google User on 19/07/2012

    Much easier than carrying around multiple field guides, and faster to ID to boot!

  • (69 stars)

    by Alan on 12/04/2012

    The first time I used this app (on my shiny new android flavored asus tf-101) I managed to identify two plants I had been unable to identify. This is a very nice app, does what it should, and I look for more field guides like this. Thank you. PS: WSU a