Here we are having a delivery of cement to make the footings. The hole was 40' long, 20' wide and 9' deep. You can not see it here, but we have a 10" deep 10' x 4' cavity in the floor that holds pea gravel and water. This inner reservoir of water is what creates the high 80-90 percent humility we need to over winter dahlia and gladiola tubers. The root cellarBeing embedded this deep in the ground ensures that the inner temperature of the root cellar will not exceed 50 degrees, perfect for dahlias.

Here we are having a delivery of cement to make the footings. The hole was 40' long, 20' wide and 9' deep. You can not see it here, but we have a 10" deep 10' x 4' cavity in the floor that holds pea gravel and water. This inner reservoir of water is what creates the high 80-90 percent humility we need to over winter dahlia and gladiola tubers. The root cellarBeing embedded this deep in the ground ensures that the inner temperature of the root cellar will not exceed 50 degrees, perfect for dahlias.

Here you see the early stage of the hoop house construction, where the base boards are being attached to the poles driven into the ground to secure the hoop house.

Here you see the early stage of the hoop house construction, where the base boards are being attached to the poles driven into the ground to secure the hoop house.

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The shaft on the right is built to accommodate a manual dumb-waiter that will extend from the top of the root cellar to the top of the hoop house. It will be used to lower and raise boxes of dahlia tubers. There will also be a three tier staircase built around the dumb-waiter staff. Then there is an inner door where that leads to the main chamber where the boxes of tubers will be stored on shelves that line the walls.

The shaft on the right is built to accommodate a manual dumb-waiter that will extend from the top of the root cellar to the top of the hoop house. It will be used to lower and raise boxes of dahlia tubers. There will also be a three tier staircase built around the dumb-waiter staff. Then there is an inner door where that leads to the main chamber where the boxes of tubers will be stored on shelves that line the walls.

Here you see the ribs of the hoop house, which are 4" apart from one another. The roof of the root cellar we are going to use as the floor of our inner germination room , our hoop house within a hoop house.

Here you see the ribs of the hoop house, which are 4" apart from one another. The roof of the root cellar we are going to use as the floor of our inner germination room , our hoop house within a hoop house.

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This picture shows the three ceiling panels that were placed on top of the root cellar roof. The three holes will be vents for warm air to escape and there are three tubes on the right that will be part of a cool air intake system that will enter the bottom of the root cellar and gently force warm air out, thus creating circulation.

This picture shows the three ceiling panels that were placed on top of the root cellar roof. The three holes will be vents for warm air to escape and there are three tubes on the right that will be part of a cool air intake system that will enter the bottom of the root cellar and gently force warm air out, thus creating circulation.

Here we see the hoop house completed. We've asked our neighbors to be patient, because by May be will make this corner very attractive, with gorgeous gardens, a cedar split-rail fence, new sidewalk and fruit trees.

Here we see the hoop house completed. We've asked our neighbors to be patient, because by May be will make this corner very attractive, with gorgeous gardens, a cedar split-rail fence, new sidewalk and fruit trees.