Best Robot Lawn Mower for Tall Grass

If you've ever come home after a couple of months to find that your lawn's grass has become tall and overgrown, you'll know that some robot lawn mowers just don't cut it — literally. This issue is exacerbated if your grass is perennial ryegrass or Bermuda grass that tends to grow very quickly. Robot lawn mowers tend to not handle tall grass well, but there are a few that can effectively manage thick, tall grass.

Our team at Mowrator is here to help you with purchasing a robotic lawn mower that can cut through tall grass like butter. We've outlined our three picks for tall grass mower robots and how tall grass may affect your lawn mower's performance.

Key Takeaways

• The Mowrator S1 2WD costs $2,999, has a blade height of 1.8 to 4.6 inches, 21-inch cutting width, and can cut 20” grass on slopes up to 45% (24°). Mowrator’s S1 2WD is also equipped with a LiFePO4 battery that has a 135-minute runtime.
• The Worx Landroid Vision AI W208 retails at $1,599, uses a lithium-ion battery, and features both rain and AI sensors. This model has a blade height of 1.5 to 3 inches, a 19-inch cutting width, and can handle slopes up to 30%.
• The Husqvarna Automower 450XH costs $3,299, with a blade height of 2 to 3.6 inches. This particular model sports a 10 Ah lithium-ion battery with a 270-minute runtime per charge. It also features GPS-assisted navigation and can manage slopes up to 45%.

The Best Robot Lawn Mowers for Tall Grass

There are a few factors that help a robot lawn mower with tall grass, including blade height, motor power, and slope handling. Here are the best robotic lawn mowers to look out for:

Mowrator S1 Remote Control Lawn Mower 2WD — $2,499

Our first pick for a robotic mower that can manage tall grass isn't a robot lawn mower at all, it's a remote control lawn mower called the Mowrator S1 2WD. Using a remote controller, the S1 2WD is specifically designed to tackle tall grass to mow grass that is up to 17 inches (43.18 cm) tall. This mower can cut through tall grass thanks to its powerful LiFePO4 battery, which grants it a runtime of up to 135 minutes on a single charge.

This remote control mower can also handle large slopes up to 45% (24°), perfect for mowing tall grass in difficult-to-reach places that traditional lawn mowers can't reach.

Worx Landroid AI W208 — $1,599

Our first fully robot mower is the Worx Landroid AI W208, equipped with GPS sensors that don't require a perimeter wire at all. The W208 boasts a blade height adjustment between 1.5 and 3 inches, which makes it an ideal choice for managing especially tall grass. These mowers cut up to 0.2-acre plots with ease, perfect for all types of lawns in a modest residential area.

Husqvarna Automower 450XH — $3,299

Our final pick is the Husqvarna Automower 450XH, an extremely capable robotic lawn mower tall grass should fear. This Automower can cut grass between 2 and 3.5 inches tall, which is more than the average blade height of robot lawn mowers in a similar category. In addition to a tall blade height, it has spiral blades equipped to ensure tall grasses and is capable of slope handling up to 45%.

Why do Robot Lawn Mowers Struggle with Tall Grass?

Robot lawn mowers often struggle with tall grass for several reasons, including:

• Cutting height limitations
• Uneven surface conditions
• Mulching challenges
• Difficulties with setup
• Lack of tall grass features

How Will Tall Grass Affect Your Lawn Mower Performance?

Tall grass can significantly impact the performance of your grass robot mower if it's not equipped to handle it. Here are the top factors that will reduce the efficiency of your robotic lawn mower:

• Battery and Power Consumption: Tall grass will drain your robot grass mower battery fairly significantly, which will require that you recharge it more often.
• Potential Damage to Your Lawn: It's generally considered a good rule of thumb to only cut a third of your grass' height at a time. By cutting tall grass all at once, you can shock the grass and weaken it to the point of becoming susceptible to pests and diseases.
• Strain on your Mower: Tall grass can place additional strain on your lawn mower's motor and battery, causing it to overheat or potentially damage the belt and blades.

Beat your tall grass issues with Mowrator’s S1 2WD today. Browse our collection of Mowrator lawn mowers and accessories today.

Robot Lawn Mowers for Tall Grass FAQs

Can Electric Lawn Mowers Cut High Grass?

Yes, while electric lawn mowers tend to cut high grass less effectively than traditional gas-powered mowers, they can still cut high grass well. Your lawn mower will reduce its viable battery consumption when it cuts the grass, so ensure you're aware of the battery capacity and size of your lawn.

Can Grass Be Too Tall for a Lawn Mower?

Yes, grass can be too tall for certain lawn mowers. Around 12 inches or more is generally considered to be very tall grass, which may damage your lawn and mower if you're not careful.

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