Can a robot mower cut long grass?

US product page for the Automower 410 iQ, read Oct 22, 2026: from $2,599.99, for lawns up to about half an acre (±20%), and slopes up to 45%. The page lists no camera-based obstacle detection. Re-read Oct 24, 2026: Husqvarna says its Automower iQ mowers "operate rain or shine"; IPX5 protection rating; connectivity listed as cellular, Wi-Fi and Bluetooth, controlled through the Automower Connect app. Safety features listed: anti-theft alarm, GPS theft tracking through the Connect app, GeoFence, PIN code and lift sensor. Re-read Oct 25, 2026: in the app's virtual map you set cutting areas, stay-out zones and pathways, and choose random, striped, checkerboard and other systematic mowing patterns; the specs list 0.5 acre for systematic mowing versus 0.25 acre for irregular areas. The page doesn't describe cutting close to edges. Cutting height about 1 to 4 in, adjusted electrically from the Automower Connect app; the page doesn't mention tall grass.

US LUBA mini 2 AWD page (read Oct 25, 2026): regular price $1,999 (on sale at $1,799 when read), for lawns up to 0.37 acre. Perimeter-wire-free with no antenna, using 360-degree LiDAR and dual-camera AI vision. All-wheel drive for slopes up to 80%. Avoids 300+ stationary or moving obstacles to protect plants, furniture and pets. IPX6 waterproof with rain detection. Built-in 4G module with 3 years of free data. Re-read later the same day: a fixed 4.7 in edge-cutting disc that reaches to within 2.1 in of a wall, and "Auto Multi-Zone Mapping" with map editing that doesn't require starting over. Cutting height: Standard Version 0.8 to 2.6 in, High Version 2.2 to 4.0 in; no maximum grass height is stated.

Husqvarna support article on preparing the lawn and Automower for the season (Australian site, read Oct 25, 2026): wait until the grass is 5 to 7 cm (2 to 2.8 in) tall before the first mow, start with a high cutting height and lower it gradually, because cutting too short stresses the grass. Selected models offer TargetHeight in the Automower Connect app, which lowers the cutting height step by step on its own. The article doesn't cover mowing tall grass.

Husqvarna guide to cutting an overgrown lawn (New Zealand site, read Oct 25, 2026): take off about half the height on the first cut, with a line trimmer for knee-high grass; trim again a few days later to about 6 inches; mow about 8 days after the first cut and lower the height by about a third each time. Only after that does it suggest a robot mower, to keep the lawn at height on a schedule.

US product page for the Luba 3 AWD, read Oct 22, 2026: from $2,399 (0.37 acre) to $3,299 (1.25 acres). All-wheel drive for slopes up to 80% (38.6°). Navigation by 360° LiDAR, network RTK and dual-camera AI vision; Mammotion says it detects obstacles and pets as it mows and recognizes 300+ obstacle types. Re-read Oct 24, 2026: lists IPX6 waterproofing and rain detection. Built-in 4G module with 3 years of free 4G data, after which a subscription is needed; NetRTK positioning through its iNavi service is free for the product's lifetime. Re-read Oct 25, 2026: the Standard Version cuts at 1.0 to 2.7 in and the High Version at 2.2 to 4.0 in.

UK product page for the Goat O800 RTK, read Oct 22, 2026: 800 m² cutting area, LiDAR-enhanced RTK navigation, AIVI 3D obstacle avoidance with a 3D time-of-flight sensor and AI camera. The page lists the maximum slope as 50% (24°) in the specs and 45% (24°) in the feature text; 3 cm barrier crossing. Re-read Oct 24, 2026: IPX6 waterproof; connects to the app over Bluetooth or 2.4 GHz Wi-Fi. Re-read Oct 25, 2026: TruEdge cuts to the edge, riding over passable edges with "zero-edge cutting" and leaving about a 5 cm gap near obstacles (Ecovacs contrasts this with 40 cm+ for other mowers, from its own tests). Multiple zones, each with its own speed, cutting height and obstacle-avoidance height; the map editor can add, merge, split and delete areas. Mows in U-shaped paths. Cutting height 3 to 8 cm, adjustable in 0.5 cm steps and described as automated.