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.

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.