RWC follower, John Claypool, recently wrote me an email sharing his passive approach to harvesting worms from his big bin. I loved the simplicity (and apparent effectiveness) of John’s method, so I asked if it would be ok to share it here.
Here is his description, with pictures:
Make a frame of 1×4 wood that will fit the top of your bin and cover
with 1/4″ hardware cloth or other open mesh screen. Place on top of
the bin and fill with food that is fine enough for the worms to work
easily (I use pulverized horse manure). Cover to keep out light and
wait a couple of days. The worms will come up to feed and you simply
need to dump the frame onto your table to seperate the worms from the
food. I will use this method to harvest my production beds but my
trial just this week proved the theory. I guess if you weigh the full
tray/food before and after you would have the weight of the harvested
The empty screen
Screen filled with horse manure.
Bin where the screen is placed. Please note I have harvested a couple of times from this bin in the past couple of weeks.
Screen in place on bed.
Screen covered with normal bed covering to exclude light.
Screen removed after 18 hours.
Harvest totaled 5 oz. with virtually no work.
I’ve tried various worm “trap” set-ups in my larger beds to see if I could concentrate (and remove) lots of worms – but with little success. I definitely want to give John’s method a try!
Thanks very much to John for sharing (and letting me share here)!