Side stems affect plant vigor. As a tomato grows, side shoots, or suckers, form in the crotches, or axils, between the leaves and the main stem. If left alone, these suckers will grow just like the main stem, producing flowers and fruit. Suckers appear sequentially, from the bottom of the plant up.
The perimeter of a two-dimensional shape is the total distance around the shape, or the sum of the length of its sides. By definition, a square is a four-sided shape with four straight sides of equal length, and four right (90Â°) angles.
The perimeter of an area of land is the whole of its outer edge or boundary. ...the perimeter of the airport. [+ of] Officers dressed in riot gear are surrounding the perimeter fence. boundary, edge, border, bounds, limit, margin, confines, periphery, borderline, circumference, ambit COBUILD Advanced English Dictionary.