Gardena Robot Mowers

The SILENO flex is Gardena's 2025 redesign for the US and, at $599, the cheapest wired mower here from a major brand. It fixes the biggest complaint about the older SILENO City and Life: cut height now runs 1 to 4 in instead of topping out at 2 in, so it finally suits cool-season American lawns. Coverage is up to 8,600 sq ft, slopes up to 35%, and a 10 in cut on an 18V 3.6Ah pack gives about 90 minutes of mowing per 60-minute charge. Navigation is boundary wire plus a guide wire, which is still the most precise way to keep a robot out of the flower beds and lets it thread narrow corridors. It mows in the rain (there is no rain sensor by design, only a frost sensor), is quiet at 60 dB, and is hose-washable. The trade-offs are Gardena's usual ones: the app is Bluetooth-only with roughly a 33 ft range, so no remote start, notifications or GPS, and obstacle handling is a bumper. Anti-theft is a PIN plus a lift alarm. Versus the Worx Landroid M (around $900 street) you get a taller cut and a lower price but lose Wi-Fi control; versus a wire-free Segway Navimow i105 at $999 you give up couch control for a system that never loses satellite lock. Best for small, complex lawns under 0.2 acre where a wire is acceptable and quiet matters.

Best for Small, wire-friendly lawns up to about 0.2 acre where a quiet, cheap mower with a tall cut range matters more than remote app control.

The SILENO life 750 is a wider cut than the city and minimo: an 8.7 in disc against the 6.3 in on the city and minimo, rated for 8,100 sq ft and 35% slopes, at about $715 on Amazon for the US-spec 15101-41. The larger deck is the whole argument. It covers the same 65-minute mowing cycle and 60-minute charge as the city but clears a lawn in fewer passes, and at 58 dB it is still quiet enough to run at night. Setup is boundary wire plus guide wire with CorridorCut for gaps down to about 24 in, SensorControl scales the schedule to growth, it mows in the rain by design (frost sensor only), and it rinses off with a hose. Anti-theft steps up from the city to a PIN plus an alarm. What has not changed is the 0.8 to 2.0 in cut range, which rules out fescue and bluegrass at a healthy height, and the Bluetooth-only app, which means walking within about 33 ft to change anything and no alerts when it gets stuck. Obstacle handling is a bumper unless you add Gardena's optional radar. Gardena's international site lists the life as a legacy model, and the 1000 size (15102-20, 10,800 sq ft) has no published US price, so treat the 750 as the last of the line. The $599 SILENO flex cuts wider still at 10 in and climbs steeper ground, so the life is the pick only when its lower price or quieter 58 dB matters more.

Best for Warm-season lawns up to about 0.2 acre that want a wide-cutting, quiet wired Gardena and can live with a Bluetooth-only app.

The SILENO city is the small-lawn Gardena that Amazon has sold in volume for years, and the US-spec -41 revision is still listed there in two sizes: the 250 for 2,700 sq ft at about $611 and the 500 for 5,400 sq ft at about $821. Both share one body: a 6.3 in three-blade disc, a 0.8 to 2.0 in cut range, 35% slope rating, 57 dB, and roughly 65 minutes of mowing per 75-minute charge; the 500 simply carries a larger 18V pack and a longer schedule. Setup is a boundary wire plus a single guide wire, with CorridorCut for passages down to about 24 in and SensorControl that adjusts run time to how fast the grass is growing. It mows in the rain by design (there is a frost sensor, not a rain sensor), is hose-washable, and its 16 lb weight makes it easy to carry. The catches are the ones Gardena's whole wired line shares: the app is Bluetooth-only with about a 33 ft reach, so there is no remote start or alerts; obstacle handling is a bumper; and the 2 in maximum cut is too short for fescue or bluegrass, which points it at warm-season lawns. Gardena's international site now files the city as a legacy model, and the $599 SILENO flex cataloged here covers 8,600 sq ft with a 1 to 4 in cut range for less than the city 500, so the 250 at $611 is the only trim that still makes sense on price, and only if you want the quietest wired mower for a tiny yard. Against the Worx Landroid S you get less noise and a guide wire but lose Wi-Fi control.

Best for Small warm-season lawns under an eighth of an acre where a quiet, wired Gardena at about $611 beats app features.

The SILENO minimo is Gardena's smallest, quietest mower and, at about $530 on Amazon, the cheapest way to get a European-built robot onto a tiny lawn. It is rated for 2,700 sq ft, climbs 35%, and at 57 dB is about as loud as a refrigerator, so nobody will notice it running at 2 am. Setup is boundary wire and a single guide wire; CorridorCut lets it pass through gaps down to about 24 in, and SensorControl adjusts how often it mows to how fast the grass is growing. It runs about 65 minutes per cycle on its 18V pack and recharges in 75. Now the limits: cut height maxes out at 1.8 in, which is too short for fescue or bluegrass and really aims it at Bermuda, zoysia and other warm-season grass; the app is Bluetooth-only with a 33 ft range, so no remote start or alerts; there is no rain sensor (it simply mows wet), no edge mode, and obstacle handling is a bumper. Gardena has shifted its US lineup to the SILENO flex ($599, 1 to 4 in cut, 8,600 sq ft), and the minimo appears to be selling down remaining Amazon stock, so treat it as a closeout buy rather than a long-term platform. Against a Worx Landroid S it is quieter and cheaper but far less connected. Best for a postage-stamp warm-season lawn where silence and price beat features.

Best for Tiny warm-season lawns where a near-silent, sub-$600 wired mower is more important than app features or a tall cut.