What Is A Rotary Spreader

what is a rotary spreader

Definition and Function

A rotary spreader is a gardening tool designed to evenly distribute fertilizer, seeds, or other granular materials across a specific area. The key function of a rotary spreader is to ensure uniform coverage of the material being spread. It consists of a drum or hopper that rotates to disperse the contents. The speed and width of the spread can usually be adjusted to meet different requirements.

How Rotary Spreaders Work

Rotary spreaders operate by utilizing centrifugal force. When the drum or hopper inside the spreader rotates, it creates centrifugal force that propels the granular material outwards and onto the ground. This mechanism enables the spreader to evenly distribute the material, ensuring that every section of the area receives an equal amount.

Benefits and Usage

There are various benefits associated with using rotary spreaders. First, they provide precise and uniform spreading, ensuring that all parts of the target area receive an adequate amount of the material. Second, they are highly efficient for covering large areas quickly. The rotating mechanism facilitates wide coverage, reducing the time and effort required for spreading manually.

Rotary spreaders are commonly used in lawns, gardens, and agricultural fields. They are suitable for spreading a range of materials, such as fertilizer, grass seeds, ice-melting salt, and leveling sand. However, it's important to consider the flow characteristics of the material to prevent clogging the spreader.

Selection and Maintenance

When choosing a rotary spreader, several factors need to be considered. These include hopper capacity, spread width, calibration mechanisms, and the type of material it will be primarily used for. Proper maintenance, including regular cleaning and lubrication, ensures optimal performance and extends the spreader's lifespan.

Popular Brands and Models

Several reputable brands offer rotary spreaders suitable for different needs. Scotts, Agri-Fab, and Earthway are well-known manufacturers in the market. Popular models include the Scotts Turf Builder Classic Drop Spreader, Agri-Fab 45-0463 Tow Behind Broadcast Spreader, and Earthway 2150 Commercial Walk-Behind Spreader.


Rotary spreaders are essential tools for efficient and uniform distribution of granular materials on lawns, gardens, and agricultural fields. Understanding their function, benefits, proper usage, maintenance, and available options can help users make informed decisions and achieve desired results.

FAQ (Frequently Asked Questions)

  1. Q: How do I calibrate a rotary spreader?
  2. A: To calibrate a rotary spreader, start by measuring a specific amount of the material to be spread. Then, set the spreader to its lowest setting and walk a designated distance. Afterward, check how much of the material has been spread in that area. Adjust the spreader settings as needed to achieve the desired coverage.

  3. Q: Can a rotary spreader be used for liquid products?
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    A: No, rotary spreaders are specifically designed for granular materials and are not suitable for liquid products.

  5. Q: How often should I clean and maintain my rotary spreader?
  6. A: It's recommended to clean the spreader after each use to prevent leftover material from clogging the mechanism. Additionally, regular maintenance, including lubrication of moving parts and inspection for any damage, should be done at least once a season or as advised by the manufacturer.

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