Earthworm Harvesters & Worm Bin Plans


OSCR blueprintsBlueprint for a Successful Vermiculture Compost System modeled on the famous continuous flow, Oregon Soil Corporation Reactor. Includes construction drawings, operators guide, operation plan, parts list, and site license. Build an OSCR from plywood and screws. Add insulation and heating cables to keep the bin at a constant 72 degrees F. Dimensions of bin are 36″ wide x 48″ long x 36″ high. Make out of new or used materials. Plans include directions to make harvesting screen and audit box. Many diagrams, charts and graphs. Add feedstock to top of system and harvest castings and worm tea from harvest chamber below. Use of these bins allows you to keep worms at their happiest in the coldest conditions. (VermiCo uses these as incubation bins throughout the winter). OSCR Blueprints, 56 pages

#108 OSCR Blueprints $50 + $5 shipping

VermiCo suggests Gro Quick Electric Soil Heating/Warming Cable-ea 24 Ft for use with the OSCR bins to keep the bins at optimum temperatures.


VermiCo’s Commercial Earthworm Harvester Plans

VermiCo Harvester VermiCo offers two models of earthworm harvester plans to meet the needs of today’s Vermicomposting Operations. These units have been specially designed to be easy to use and to offer years of reliable service. The versatile trommel screen can be used either to separate earthworms from their bedding or to screen castings to produce a uniform product.

VermiCo harvesters are capable of harvesting up to 50 pounds of earthworms per hour. That’s about 400 lbs. of worms over an 8-hour harvesting day. You will reduce labor costs, increase earthworm sales and increase profits from marketing castings by investing in apiece of machinery that will provide you with years of service. Our harvester plans are designed from years of worm farm experience and consist of rugged components.

  • Special features of the VermiCo Worm Harvester
  • 16 gauge steel drum construction
  • Quiet, dependable operation
  • Mounted on four 12″ pneumatic tires for easy movement.
  • All joints are welded to help hold the frame rigid for a cleaner harvest.


  • Portability: Move your VermiCo harvester from one location to the next, using a standard pick-up truck.
  • Maneuverability: Heavy duty, large pneumatic tires allow you to position your harvester anywhere along outdoor windrows.
  • Flexibility: Choose either the electric or gas-powered models.
  • Durability: The heavy-duty welded construction in every harvester we build is your guarantee of years of profitable use.

See the harvester in action

Two Plan Models Available:

VermiCo harvesterWe offer the flexibility of using either an electric-powered or gas-powered harvester, providing you with a safe, sensible, and economical alternative to harvesting worms by hand.

Detailed Harvester Plans

You can build your own harvester using these detailed plans. These blueprints provide detailed directions for building our Gas or Electrical Units. This design features what we believe is the most dependable and productive harvester of its size available. Our plans include:

  • Tools list
  • Materials list
  • Sheet Metal parts list
  • Laying out the drum and shaft
  • Laying out the harvester frame
  • Laying out the hydraulic tank
  • Final Assembly instructions and pictures
  • Operation
  • Color Photographs
  • Drawings

You will find the 33 pages of plans very easy to follow with pictures of your progress included for the different steps.

Electric Harvester PlansVermiCo’s Electric “E-Z Loading” Harvester Plans

This Electric Worm Harvester can be plugged into household current for immediate use. Heavy farm-duty motor used for drum drive is made for use with extension cords without motor damage. This unit is the most efficient electric-powered unit in the field today. Every part is tested in order to give trouble free harvesting.


  • MACHINE WEIGHT: 425 lbs.
  • DIMENSIONS: 12 ft long x 44″ wide
  • CYLINDER: 9 ft. long

E-125 optional feature: An “instant stop” electrical overload switch that will stop the motor instantly if the drum encounters an obstacle.

Electric HarvesterFits in the back of a pick up VermiCo Electric Worm Harvester

Electric Harvester Plans $250 includes shipping

Electric Harvester Plans ebook $200

Gas Harvester PlansVermiCo’s Gas “E-Z Loading” Harvester Plans

This harvester is powered by a sturdy, Honda gasoline engine. Our gas model adds greater versatility, allowing field use where electrical power may be unavailable. The drum turns on heavy duty ball bearings and is powered by a reliable 4 hp gasoline engine, via a hydrostatic drive using industrial grade components for quiet, dependable operation. An added benefit of this model is that it allows the user to vary the drum speed to optimize the harvesting process.


  • MACHINE WEIGHT: 425 lbs.
  • DIMENSIONS: 11 ft. long x 44″ wide
  • CYLINDER: 9 ft. long

OPTIONAL FEATURE: A Detent Valve in the hydraulic circuit of the gas harvester gives the operator “forward -neutral – and reverse” control of the drum, and will also “trip” to neutral if the drum encounters resistance while turning, thereby instantly stopping the drum rotation if it encounters an obstacle. An electric automatic stop switch can be installed on the electric harvester.

Gas Harvester engine4 hp Honda Gasoline Engine Front view



Gas Harvester Plans $250 includes shipping


Gas Harvester Plans ebook $200

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