Tomato stand-alone or multiple-bay greenhouses is on the increase, providing fruit during those times of the year when field-grown fruit is not readily available. Smaller sized fruit (cherry and grape), or cluster tomatoes (fruit-on-the-vine) are the fruit of choice for the large commercial greenhouse operators while the beefsteak varieties are the choice of owner-operator growers. Hydroponic technique is often used in hostile growing environments, as well as high-density plantings. To facilitate transportation and storage, tomatoes are often picked unripe (green) and ripened in storage with ethylene. Unripe tomatoes are firm. As they ripen they soften until reaching the ripe state where
Plum (color) Plum (color) Plum is a purple color with a brownish-gray tinge, like that shown on the right, which is a close representation of the average color of the plum fruit. As a quaternary color on the RYB color wheel, plum is an equal mix of the tertiary colors russet and slate. The first recorded use of "plum" as a color name in English was in 1805. At right is displayed the color pale plum, which is the pale tone of plum that is the web color called "plum". This color is paler than the color at the head of this