Lawn Dot brand vegetation barriers come in 3 sizes, as well as 5 colors, and here’s why.
Some yards are smaller and mowed with push style mowers, more easily maneuvered around lawn features. Some obstructions are smaller diameter and can be trimmed safely with a smaller Lawn Dot. Bigger lawns are usually cut with riding mowers that move faster and could cause greater damage. Or the obstructive lawn feature is a larger diameter. And some obstructions are large and need the added margin of a larger Lawn Dot.
So, which size to pick?
Consider the right margin for safe trimming with your lawn mower. Grass, your lawn, whatever vegetation, won’t grow straight up from the edge of the Lawn Dot. It will lay out over the edge, usually about as much as it is in height when you mow. Say you cut your lawn when it’s 4 inches tall. Grass will lay out onto your Lawn Dot about four inches. Then your mower needs to pass over it with enough margin to suck it up to the blades to cut it back to, say, 2 and a 1/2 inches. Then you want some clearance between the mower and the obstructive feature. From this criteria, pick the size that best fits your obstruction, feature, mowing circumstances. An 18 inch Lawn Dot with a 1 inch center hole will work best with push mowers and obstructions to, say, 3 inches diameter. A 24 inch Lawn Dot with its 1 inch center hole will work best with riding mowers and features to about 8 inches diameter. For utility poles, fire hydrants, telephone terminal boxes, etc., of seven inch diameter or larger, we suggest using the 30 inch Lawn Dot, which comes with a 7 inch diameter center hole.