Curly Top Virus      

A.  Your tomatoes probably have the curly top virus.  The leaves start to curl up, showing the underside of the leaves, the overall color becomes more yellow, and the veins in the leaf may take on a purple color.  There is no cure.  The virus is spread by the beet leaf hopper, and when it feeds on the tomato plant it infects the plant.  Remove the affected plant to keep from spreading the virus.  If still early in the season you can try replanting and still get some tomatoes.
While there is no cure you can help prevent infection with weed control.  The beet leaf hopper feeds on mustard weed, which was quite prevalent this year.  When the weeds die back in late May, the leaf hopper looks for other plants to feed on.  Early spring control of weeds will help keep the beet leaf hopper under control.

Tomato with
curly top virus.

                               
Healthy tomatoes in this small
vegetable garden.  The wall,
grass, light shade and lack
of weeds helps discourage

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