Each vegetable crop grows best in its own range of temperatures. The optimal temperature range for peppers and eggplants, for example, is 70Â° to 85Â°F; pollination will not occur if the night temperature falls below 55Â°F, and blossoms may fall if the temperature rises above 85Â°F.ach vegetable crop grows best in its own range of temperatures. The optimal temperature range for peppers and eggplants, for example, is 70Â° to 85Â°F; pollination will not occur if the night temperature falls below 55Â°F, and blossoms may fall if the temperature rises above 85Â°F.
Slab Foundations. The two basic types of slab foundations are the monolith and the stem wall. Monolithic foundations are poured as a single form, with the outside edge, about the width of the wall, being 10 to 12 inches deep and the center of the slab typically 4 to 6 inches deep. A stem wall foundation is poured in multiple parts.
1 Header-same size as a standard block but with the top notched out for the concrete slab (see photo below). 2  Half-high-same size, except only 4 inches high (8x4x16). 3  12-inch block - 12 inches wide (12x8x16) instead of 8 inches. 4  These are used to meet code requirements for tall walls.