February 9, 2017

Greenhouse Construction

Bees N Blooms has completed construction of our first greenhouse. We chose a 20’x30′ low-profile quonset design from Oregon Valley Greenhouses (OVG) and assembled it in between the rain showers with about 4-5 days of work, with the expert guidance of David Brewer and assistance of Brian Hill. We had some great help from Kip at OVG, welding assistance from Kai Klaassen, and a very helpful YouTube video from the Michigan Farmers Market Association showing how to use tennis balls to pull the poly over the structure, a technique that made the work easy and kept the plastic intact.

The new structure will help us shepherd young trees from seed to sapling and launch our cut flower production early in the spring. We’ve already put the greenhouse to good use, with 48 Red Flowering gum trees now calling it home and another 80 or so to be moved down there soon. The flower starts won’t be far behind. The trees inside survived several nights of freezing temperatures, with the greenhouse staying a few degrees above freezing, even before the doors were installed. We still have plenty to do to fix up the greenhouse, including putting some base rock down for the floor, installing more permanent benches to hold the plants, and connecting the electric and water lines. Now, if only it would stop raining!

Susan and James take delivery of the greenhouse parts, wondering how it is all going to fit together.
PhDs (Post-hole Diggers) hard at work!
Those PhDs really know their stuff--a perfectly lined up set of posts!
Geoff inspecting progress on the construction.
David making sure the bows are solidly attached to the posts.
The bones of the greenhouse.
Susan checking out the structure in preparation for the next step--installation of the doors.
To install the poly, we used the tennis ball technique to provide a hold on the plastic to pull it over the bows and tighten it up--very effective!
David and Susan discussing how best to fit the polycarbonate on the door.
With our first night of frost after nearly completing construction, we decided to measure the temperatures inside and outside of the greenhouse.
The outside temperature was just at freezing.
But the temperature inside the greenhouse was (just barely!) above freezing. This is with only one door installed, so still a pretty leaky structure.
We covered the Red Flowering Gum Trees with plastic for extra protection from the cold, knowing that the soil would provide some heat overnight.
The soil in the Red Flowering Gum pots radiated the heat it had absorbed during the day back to the greenhouse at night. The soil temperature was about 50°F in the evening, and by morning it was 40°F.
Happy trees! The greenhouse worked to protect them from freezing temperatures. Yesssss! With both doors on, some insulation, and just a little heat, we'll be good for most of what Northern California can throw at us.
A frosty morning at Bees N Blooms.
Farm News
About Susan Kegley

Susan is one of the owners of Bees N Blooms farm. She loves farming and beekeeping because they provide a never-ending source of engagement with nature, opportunities for puzzle-solving, observation, and learning new things, and access to breathtaking beauty and wonder.