1. What is wrong with a lawn that has rings of dead grass; how can it be treated? I live in Colorado. Updated: February 14, 2012
2. What do I spray my apple and pear trees with to control insects and diseases? I live in Colorado. Updated: February 14, 2012
3. Why do tomato fruits have dark, circular spots on them? Updated: January 31, 2012
4. Why would the foliage of my potato plants be distorted, rolled, and not thrifty? Updated: January 24, 2012
5. Can partially decomposed wood chips from an elm that died of Dutch Elm disease be used as mulch? Updated: January 12, 2012
6. We have clubroot in our garden soil and can't grow cabbage, etc. How do we control and/or eradicate it? Updated: January 11, 2012
7. Why are the roots of my cantaloupe plants covered with knots and small swellings? I live in Texas. Updated: January 11, 2012
8. Some of my blackberry canes have large oval, grayish-white areas, and the affected canes eventually die. What is the problem? Updated: January 05, 2012
9. Can irrigating a lawn damage woody and herbaceous ornamentals? Updated: January 05, 2012
10. What are the large, black swellings that appear on flowering plum twigs and branches? Updated: January 05, 2012
11. What is causing the wet oozing on the trunks of several of my trees? Updated: January 05, 2012
12. How can I control viruses in tomatoes? Updated: November 27, 2011
13. What do virus symptoms look like on tomato? Updated: November 27, 2011
14. What virus attacks tomatoes? Updated: November 27, 2011
15. What is the recommended method for dealing with slime mold? Updated: November 27, 2011
16. What is causing straw colored patches in my lawn? I live in Colorado. Updated: November 27, 2011
17. What is the proper procedure for dealing with a cavity in a tree trunk? Updated: November 25, 2011
18. What causes brown spots with yellow margins on bean leaves? Updated: November 25, 2011
19. I have large translucent areas on my tomato fruit. What's going on? Updated: November 20, 2011
20. Why does the outer leaves of my cabbage plants develop yellow lesions with downy growth underneath? Updated: November 17, 2011
21. What causes the foliage of my beans to turn yellow on top and form a brown, dusty material on the bottom? Updated: November 15, 2011
22. What is the best approach to limit the damage done by snow mold? I live in Colorado. Updated: November 15, 2011
23. Occasionally, I lose one of my azaleas as the leaves wilt and turn brown; they gets water and fertilizer. What is causing this to happen? Updated: November 15, 2011
24. I live in Colorado. What is wrong with evergreens whose needles are turning yellow; can the problem be treated? Updated: November 14, 2011
25. What causes root and stem rots of beans? Updated: November 14, 2011
26. We planted tomatoes near a tree and, even though they get some sunlight, they are now more than 6 feet tall with few fruit. What is the problem ? Updated: November 09, 2011
27. What can be done about a spider plant whose tips are turning brown? Updated: November 09, 2011
28. The lower foliage on my tomatoes is beginning to turn yellow with circular, dark brown to black spots. What is wrong? Updated: November 09, 2011
29. My tomato plants wilted rapidly. When I cut the stems open, I found a brown ring around the inside. Updated: November 09, 2011
30. What causes the leaves of my tomatoes to turn brown along the edges? Updated: November 09, 2011

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