Any of various plant diseases characterized by yellowish discoloration and often by wilting, deformation, and stunted growth. Yellows may be caused by phytoplasmas, by ascomycete fungi of the genus Fusarium, or by a virus, especially of the genus Chlorogenus.
It yellows their teeth, makes their breath smell like a trash can, and ruins their health.
It was just as spectacular as those on earth, a brilliant mix of pinks, oranges, burnt yellows, reds, and purples.
In some parts of North America it is found that the white peaches are much less liable to the attack of a disease known as the "yellows" than are the yellow-fleshed ones.
These gave rise in due course to a second generation in which there were three yellows to one green.
In the third generation the yellows from the second generation gave the proportion of one pure yellow, two impure yellows, and one green; while the green seed of the second generation threw only green seeds in the third, fourth and fifth generations.