Sod laid on graded soil with tight seams

What comes out before any sod goes down

Grindings are not soil. A stump ground out in place leaves a mound of wood chips mixed with sand, and that mix holds water like a sponge one week and dries to powder the next. Wood also pulls nitrogen out of the ground while it rots, so grass sitting on top of it goes pale and thin while the lawn a few feet away looks fine. All of it comes out, down past the color change where the chips stop and real soil starts.

Under an old canopy the ground is usually half bare, with a crust of leaf litter and whatever turf survived in the shade. That layer gets stripped, along with surface roots running out from where the trunk stood. Leave a big root in place and it rots down over a couple of seasons, and the sod above it drops into a trough you can see from the street. Better to cut it out now while the ground is open than to patch a sunken line later.

Then the hole gets filled back with soil rather than with what came out of it, and the grade gets set to the lawn on either side and to whatever the yard drains toward. Sod is about an inch thick with the soil on it, so the prepared ground has to sit that much low against a driveway edge or a patio slab. Skip that and the new piece stands proud of everything around it, and the mower scalps the high side on the first pass.

• Grindings and chips hauled out, not buried
• Surface roots cut out while ground is open
• Clean fill soil, graded to the existing lawn
• Grade dropped so sod sits flush at edges
• St Augustine laid tight with staggered seams

Sand, hardpan and the way this ground settles

Most yards around Palmetto sit on fine gray sand with a dark hardpan layer a foot or two down. Water runs straight through the top and then stalls on that layer, which is why a low corner can stay soggy for days after a storm while the rest of the yard is dry by lunch. St Augustine will take wet feet for a while, but sod sitting in a bathtub of standing water goes yellow at the seams and rots from the bottom up.

Loose backfill settles. Sand dropped into a stump hole and left alone will drop again the first time it gets a real soaking, so it gets wet down and compacted in layers instead of dumped in one lift. Even then a few low spots usually show up in the first month, and those get topdressed with sand worked into the seams rather than lifted and relaid. A flat lawn is not something you get on the day the sod goes down, it is something you chase for a few weeks.

Newer blocks off the highway were built on hauled fill with a thin skin of topsoil over it, and that fill is often compacted hard enough that a shovel bounces. Those yards need the top few inches broken up before anything goes down, or the sod roots sit on a pan and never get past their own soil layer. Older block and stucco houses closer to downtown usually have better ground, and the problem there is the opposite: decades of leaf drop and old root wood under the surface.

Laying it tight, seam by seam

Sod is a live thing cut off its roots, and in Florida heat it starts working against you the moment it comes off the farm. A pallet stacked in the sun heats up in the middle and comes apart yellow and sour smelling. So pallets get placed close to the work and laid out fast, starting at the longest straight edge on the property, usually a driveway or a walk, so every piece after that has something square to run off.

Pieces get butted tight against each other and the joints staggered like brickwork, never lined up row on row. A gap the width of a finger looks like nothing on the day and it is a dead brown line two weeks later, because the cut edges dry out first and the sand between them cooks. Every piece gets cut to fit rather than stretched, and sprinkler heads get cut around cleanly so the spray is not firing into a wall of grass.

Once it is down it gets pressed into the soil so the roots are touching dirt and not air, and then it gets a heavy first watering, enough to soak through the sod and into the ground under it. Air pockets are what kill a new lawn quietly. The grass looks fine for a week, then a patch goes gray and lifts like a rug because nothing underneath it ever made contact.

Water in the first weeks

New sod wants water every day at first, and more than people expect. The roots are cut off an inch below the blades, so until they knit into the soil underneath, the only water the grass can reach is what is sitting in that thin layer. In summer that layer can dry by early afternoon. Watering early in the morning gives the lawn the day to use it, and lets the blades dry before dark, which keeps fungus off a lawn that is already stressed.

After the first stretch the watering backs off and gets deeper instead of more often, which is what pulls roots down instead of keeping them sitting at the surface. The way to know where you are is to lift a corner. If it peels up clean, it has not rooted yet. If it holds and tears, it is in. Until it holds, keep the mower off it and keep traffic off it, because a footprint in soft new sod becomes a low spot you live with.

Season matters more here than most places. Sod that goes down in the rainy stretch gets help every afternoon and roots fast, and sod that goes down in the dry months needs someone paying attention to the irrigation or it will not make it. Chinch bugs are the other thing to watch: they work the hot open edges along driveways and walks first, and on a new lawn under water stress they can take a patch out before you notice the color change.

Full sun where the shade used to be

Taking a big laurel oak out changes the yard more than people plan for. Ground that spent its life in dappled shade is suddenly in full Florida sun from mid morning on, and the soil under it dries out at a completely different rate than the rest of the lawn. St Augustine handles sun well, which is why it is what goes down here, but new sod in that spot will want more water than the established grass around it for the first stretch.

Irrigation is worth looking at before the sod goes down, because the system was almost certainly set up around the tree. Heads that were throttled back or aimed away from a trunk now have to cover open ground, and a head that spent years spraying into a canopy may be doing nothing useful at all. Running each zone and watching where the water actually lands takes a few minutes and saves a brown crescent that no amount of hand watering will fix.

The other version of this is a yard that still has shade. St Augustine will hold in the light shade under a sabal palm or along the north side of a block house, but it thins out badly under anything dense, and no sod laid in deep shade will thicken up on its own. Where that is the situation it is better to say so up front and either open the canopy or put something other than grass there, instead of laying sod that looks good for a month and thins out by the end of the season.