Key takeaways
- Robot mowing waits until the crew confirms new sod is rooted, not just when a date passes.
- A tug test after about 10 to 14 days, according to University of Minnesota Extension, gives the crew a physical check.
- Vendor guides often cite two to three weeks, which is a starting point rather than a guarantee.
- Hand cuts lead the first passes, and the robot returns zone by zone only after sign off.
Why does the first mow on new sod matter so much?
New sod on a commercial site is most fragile in its first few weeks, while roots are still working into the soil beneath it. An early mow can lift edges, shift rolls and open seams, and the damage often stays hidden until the turf dries out and begins to pull up. The direct answer is that a robot mower should stay off new turf until the crew has confirmed the sod is rooted and has signed off the zone.
Treat any calendar date as a transition, not a promise. Trade guides commonly place the first mow about two to three weeks after installation, and some suggest waiting until the grass reaches roughly 3 to 4 inches. Those figures come from lawn-care and sod vendors rather than extension services, so they are starting points for a conversation with the client, not deadlines to hit.
How is a grow in window agreed with the client?
A grow in window is the span of time, agreed before installation, when the robot stays parked over the new turf and the crew manages mowing by hand. Write it as a window with an earliest release date and a review date, not a single day. Name who can release each zone back to the robot, and who can extend the hold.
Season and moisture move the window. A sod company guide states that spring or early fall installs generally root faster than installs made in summer heat or late fall, and that dry conditions slow rooting. A window written for a July install should not be copied onto an October job without checking those conditions.
What does the crew check before the robot goes back on?
The release decision belongs to the crew, and the calendar only sets when to check. University of Minnesota Extension, as published on Ask Extension, advises gently tugging the sod in a few areas after about 10 to 14 days. Resistance means the turf is rooting in. Little or no resistance means the zone stays on hold.
A tug test is one check, not the whole sign off. Before a zone goes back to the robot, the crew should work through this list.
- Tug test in several spots, including edges, slopes and the corners that see the most foot traffic.
- Lift check along seams and the perimeter, where sod usually pulls away first.
- Walk the zone for shifted rolls, gaps or soft spots that give under the boot.
- Confirm irrigation for that zone is steady, neither dry nor waterlogged.
Why do hand cuts lead the first passes?
The first cuts are hand cuts, and the crew sets the height. The working rule is simple: cut only when the grass is noticeably taller than the target height. Set that target from the sod species and the client's turf goals, not from a generic number copied from another site.
Hand cuts also give the crew a close look at how the turf responds to a blade. A pass shows whether an edge lifts, whether a roll tears, and whether the cut leaves footprints or scalps. Those observations are the best evidence the crew has before the robot is involved.
How does the robot return without undoing the grow in?
Release goes zone by zone, not site by site. Start with the most established area, confirm that the robot's boundary keeps unreleased sod excluded, and watch the first robot passes closely for lifted turf and wheel marks. If a pass causes damage, the zone goes back to hand cutting and the boundary is checked again.
Logs matter during this stage. Compare the robot's run record against the crew's observations for the first few weeks, and note any zone where the cut or the turf looked different. That record tells the client when the rest of the site is ready, and it keeps the transition from being judged by memory.
Where does this plan stop being a guarantee?
The plan does not guarantee a date. Weather, a delayed irrigation fix, a surge in foot traffic or a client event can extend the hold, and one dry week can undo an early release. The useful test is whether the crew's checks pass, not whether the calendar has reached a particular week.
Be ready to call a zone back to hold at any point. Lifting, shifting or new bare patches are reasons to stop the robot, and they should never be treated as a scheduling inconvenience.
How does Service Robot Co. fit into the transition?
Service Robot Co. builds this transition into deployment. Our site assessment maps the turf zones and sets exclusion areas before any robot runs, so the grow in hold lives in the robot's boundary and not only in a crew member's memory. The lease payment is quoted once that site assessment is complete, on a three year lease.
Go live support and our RoboCare™ service program cover the weeks when a zone needs adjusting. Regional service engineers in the states we serve can respond on site, and one partner handles the whole lifecycle, so the client is not coordinating a mower vendor, a sod crew and a service desk separately.
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