Friday 5: Making a Bee House from Recycled Wood


A native bee I came across recently.

I’ve always had a soft spot in my heart for bees, especially native (i.e. non-honey bee) bees.  I like them so much, in fact, that I considered studying bees in grad school when I first started.  Luckily, I have a friend who is a native bee expert.  One of the many things I’ve learned from her is how many cavity nesting bees there are in the world, bees that don’t build their own nests.  Instead, they fly around looking for suitable pre-existing cavities, holes made by other creatures.  They lay their eggs in these cavities and provision the nests with food before sealing them up.  The larvae/pupae develop inside and then chew their way out of the nest when they become adults before flying off and starting the whole process over again.

One great way to attract native cavity nesting bees to an area is to give them a lot of cavities that they can use for nests.  You can do this by making a bee house!  My friend has made tons of bee houses and writes about to make them on her blog, and I decided I finally wanted to make one this year.  However, I didn’t have a piece of wood that was deep enough to make the right sort of cavities.  I also didn’t want to buy a whole new board because my yard is small and I don’t really need more than one bee house.  Then I remembered the big pile of cut tree branches in my back yard.  Last summer, a HUGE branch from my eucalyptus tree fell during a storm and I cut it up and piled the pieces in the yard.  They were still there, and I thought that if I clumped a bunch of them together, they just might work!

For this week’s Friday 5, I present you with 5 steps I took to make a bee house from recycled tree branches.  This was a very easy project and took less than an hour altogether.  Here we go:

Step 1.  Gather supplies and equipment


Supplies and equipment

You can use hand tools to make a bee house like mine, but it’s going to take forever.  I used a power saw (just a little jigsaw – a table saw or circular saw will work well too!) and a power drill (or a drill press – oh, how I would love a drill press!) to speed things up.   You’ll need drill bits (I used 1/4 and 7/32 inch bits), a sanding block or power sander with medium grit sandpaper, and some jute twine.  You of course also need some dry tree branches.  Some of my branches were about 3 inches in diameter and others were less than 1 inch.  Use several different sizes if you have them!

(If you’re going to make one of these bee houses, it’s a good idea to pull out some safety equipment too, at least a dust mask and safety glasses.  If you have a workbench, use it to clamp your pieces down while you cut and drill to keep your hands well out of the way of your power tools.  As with any project involving power tools, please be very careful that you don’t accidentally remove a finger as you remove parts of the branches with your saw.  It’s probably going to hurt a lot if you do.  Your fingers also work just fine without perforations, so keep your drill far from them.)

Step 2: Cut the branches into equal length pieces

Cut your branches into pieces.  You want to have several nearly cylindrical pieces, so cut off any smaller branches coming off the main stem.  I cut 7 inch long pieces using my jigsaw.  It’s okay if they’re not perfectly even or exactly the same length.  Sand any sharp pieces down so the edges are smooth.

Step 3: Drill holes


Drilled branches

I made two different sized holes (different sizes will attract different bees!) in my tree branches.  I made my holes about 5 inches long, which is a little short for some bees, but I didn’t want to buy special long drill bits just to make my bee house.  6 inch holes are better for some bees, so if you have the long drill bits, now’s a good time to use them!  I left some space between the holes in the larger branches and only drilled one hole in the smaller branches.

Step 4: Wrap and tie branches together


Wrapped branches.

Lay a long piece of jute twine on the ground and start stacking your drilled branches on top of them, centering the pieces over the twine.  Make sure all the holes face the same direction!  Tightly wrap the twine around the whole bunch of branches 7 or 8 times and tie off with a secure knot.  You don’t want any loose pieces sliding around, so wrap the twine around the smaller branches as you’re stacking if you think they’ll come loose.  My branches are in a roughly rectangular layout, but you could make a circle or another shape easily too.

Step 5: Hang your new bee house!

completed bee house

Completed bee house.

After I wrapped the bundle of branches together, I cut a long piece of jute twine, folded it in half, and tied it to the twine on either side of the bee house.  This left a long loop I could use to hang my bee house.  I hung my house from a hook I embedded in my tree a while back.  I hung mine in the shade because I worry about my bees steaming to death inside the branches in the sun, but it may be better to hang the house in the sun in cooler climates.

That’s it!  Very easy to make.  I don’t know whether my design will work or not, but I’m hopeful I’ll have some bees checking in soon.  If my bee house is a success, I’ll write another post highlighting some of my visitors this summer!


Unless otherwise stated, all text, images, and video are copyright © 2011

Earth Day at the Biosphere!

The Biopshere II

Biosphere II. The habitat is the white section in the middle while the big pyramid to the left is the rainforest.

I’ve recently been hard at work preparing an educational display at the Biosphere II as part of my B2 Science and Society fellowship.  A lot of my free time has gone toward that and I unfortunately haven’t had much time to blog.  My next few posts will be about the project I’ve been working on, but until then I wanted to plug the event at which it will makes its debut: The Biosphere II Earth Day 2010!  The event takes place this Saturday, April 17th at the Biosphere II north of Tucson.

If you happen to be in the Tucson area, this is going to be a great event that I encourage you to attend.  The event planners promise heaps of educational displays, live music, sky gazing, green jobs panel discussions, and special tours all day.  They’re letting kids 12 and under in free, so bring the whole family and save!  The B2 Earth Day is a great way to celebrate a greener lifestyle and planet while having fun at a unique research facility.

The Biosphere Science and Society fellows will all be debuting their new permanent educational displays at this event.  My display is an aquatic insect pond.  I will augment my new pond with a display of live insects and information on the kinds of features you can include in your own pond to attract aquatic insects to your yard.  Come find me in the courtyard outside the orchard area of the Biosphere from 10AM-4PM and learn about the fascinating world of aquatic insects!  And while you’re there, check out my colleague Alandra Kahl’s rainwater harvesting wetland across the courtyard.

For more information about the Earth Day event, please see the Biosphere II website’s Earth Day 2010 page.  There you can download the flier for the event and watch a brief video.  The Biosphere website also contains directions and maps and has information about ticket prices and tours.  Hope to see you there!


Unless otherwise stated, all text, images, and video are copyright © 2010