The lone voice of horticultural reason

Outstanding Plant Disease Diagnostic Web Site

The University of Maryland Plant Diagnostic Web Site

Now we’re talking—this is the Internet at its best. The University of Maryland has the most user-friendly, coolest plant disease diagnostic feature that I’ve come across on the ‘net. It uses photos to help visitors select from hundreds of potential pests and diseases, each click of the mouse taking you closer to a highly educated conclusion about exactly what it is that’s been fouling your foliage, annihilating your needles, or besmirching your blooms.

The next time you want to know what’s ailing your plants, don’t waste time e-mailing me. I can take forever to answer e-mails, and then half the time I’m just making stuff up. Instead, head over to and start following the simple prompts.

Don Engebretson
The Renegade Gardener