<< I admit that I have no appreciable number of yellowing leaves. I had no disease of any kind last year, and none apparent this year. I do not use ANY herbicides at all. I do: >> We have basically had trouble free organic gardens for over 20 years then boom! Some plants we bought last year (hubby and I disputed this one) had yellow and dead leaves. Hubby "thought" he could nurse them back, I said sickies don't buy them. So this year we've been hit again with ? whatever it is. I'd like to think it's the white flies. We have now sprayed w/Savers as MIL insisted it's the best, is organic, etc. So now we will attack/spray every 3 days for 3 or 4 applications and HOPE!!!! It's dry here so no splash and we use a drip system. I did remove affected foliage (about half the leaves) and am hoping we will win this battle. Otherwise I guess we'll need to learn how to sterilize our soil and tools etc. for next year. *sigh* Mary-Anne Alamo, CA (1 hour from the largest tomato growing area in the US "Sacrotomato" , CA) USDA Zone 9B Sunset zone 14/15