Low Maintanance Landscape offers several different lower cost patio, walkway and open space options. A pit fine patio is the base preparation for a flagstone patio, minus the flagstone. Pit fines are finely crushed limestone gravel that forms a hard packable surface great for informal patio areas or future patio plans. Weeds have a difficult time growing in properly compacted pit-fines patios but spraying 1-2 times per year will be your only maintenance!