I'm a newbie from the Northeast and now live just north of San Francisco..I planted this tomato in March in an 8 gallon..it's been wilty like this for at least 3 weeks..the bottom leaves are curled but they have very few 'blight' spots..some brown along the outer edges..it's a determinate and I think I made the mistake of pruning the early suckers(my dad, a farmer in NY always did it but I realize now they were indeterminates)..the tomatoes are growing almost every day yet the couple of suckers are yellowish with green veins..

Any advice about what it is and what I should do?

Thanks very much in advance..

A light infestation can be washed off the plant with a blast of water or killed with a soapy water spray but I don't think that will help much in this case and something stronger may be needed. First I'd try the soap spray (1 T of liquid soap to 1 gallon of water). Let it sit on the plant for about 30 minutes and then rinse it off and check the plant closely.

If they return you may wish to consider using something stronger. Search here or Google aphid treatments for more info on treatment recommendations.

Once treated, I'd feed the plant some 1/4 strength food to help it recover. Keep in mind that aphids are attracted to high nitrogen fertilizers so go with something made for tomatoes. Good luck.

I'll let you know how it works out..

Thanks again for your quick help.