Diagrammatic scales are valuable tools used in the assessment of plant diseases, allowing for more accurate and consistent evaluations of disease severity. These scales provide visual ...

Browse this list of plants to find out which common pests and diseases are most likely to affect a species or genus. If you know what is affecting your plant browse the pest and disease index.

Is a particular pest or disease affecting your plants? Use the A to Z links to determine what's wrong and to help you deal with the problem. If you're not sure, try our interactive Pest and ...

• Generally, most pruning of trees and shrubs is best done in late winter. Spring-blooming shrubs should be pruned after ...