A Passive Solar Greenhouse – In the Alaska Garden with Heidi Rader

In this video, Emily Garrity, owner of Twitter Creek Gardens in Homer, Alaska gives us a tour of her passive solar greenhouse and describes what she uses it for.

For more information:
http://www.twittercreekgardens.com

Additional resources:

Solar Design Manual
http://cespubs.uaf.edu/index.php/download_file/1483/

Passive Solar Heating: An Energy Factsheet
http://cespubs.uaf.edu/index.php/download_file/1486/

Greenhouses for Homeowners and Gardeners
http://cespubs.uaf.edu/order-publication/?c=NRAES-00137

Greenhouses for Home Gardeners in Alaska
http://cespubs.uaf.edu/index.php/download_file/1240/

Controlling the Greenhouse Environment
http://cespubs.uaf.edu/index.php/download_file/1174/

46 Comments

  1. Shniggit on April 3, 2021 at 11:43 pm

    You don’t have pony walls in your greenhouse. Pony walls bear the weight of the floor above. You’re just letting everyone know that they should ignore you because you don’t know the meaning of the words coming out of your mouth.

  2. PNWgardenergal on April 3, 2021 at 11:43 pm

    Do you get flooding inside ?

  3. Stephen Erdmann on April 3, 2021 at 11:45 pm

    All welcome to join my website—-WordPress 507/Stephen Erdmann—-http://www.mymind.info/complete-history-of-the…/…

  4. TheMountainbobcat on April 3, 2021 at 11:49 pm

    are you able to keep the bears out???

  5. carlyleighb on April 3, 2021 at 11:54 pm

    Is there permafrost in Homer? Just curious about how the partially below grade design works in areas of permafrost…

  6. knuckledragging neanderthal on April 4, 2021 at 12:00 am

    If you use more fossil fuel and increase the level of CO2 in the atmosphere the growing season can be extended everywhere not just Alaska.

  7. Ronnie Being Ronnie on April 4, 2021 at 12:01 am

    Doorways need a “cold trap”. Think of when you open a fridge or freezer…the cold air is denser…it spills out like a waterfall.
    It is known that depressions and hills create “microclimates” outside. The greenhouse in this video is certainly doing the same thing!
    The door and stairs are creating excellent cold air spillage down to the floor level of the greenhouse. The air is pooling there and reducing the warmth of the grow beds and their soil.
    A “cold trap” would be an enclosed foyer at a level LOWER than the entry into the greenhouse. The coldest air is thus “trapped” in the foyer instead of being allowed to spill right down the inner greenhouse stairs. It thus modifies the “microclimate” in the greenhouse by reducing loss of heat.
    The concrete walls, I noticed, do not have insulation, which is another heat sink for the greenhouse. That will help cooling a bit in the summer, but it does not aid warming in the winter. All the concrete should have closed cell insulation with black bags or drums to hold water.
    They are not using the space effectively, either. Rotating tower gardens would make MUCH better use of the vertical space available.
    For a place that gets as cold as Alaska does, I would certainly build a rocket mass heater. The gas chamber can go over 1000 degrees F, and the bench holds temperature overnight. The extreme heat of the gasification chamber could be used to passively drive a radiator system to heat water stored in drums.
    The greenhouse is really nice…I hope they take some measure to improve it!

  8. Vicki Peterson on April 4, 2021 at 12:01 am

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  9. Jaye Curry on April 4, 2021 at 12:02 am

    Seems very well designed. That it works in Alaska is impressive.

  10. Sean McConnell on April 4, 2021 at 12:05 am

    how air tight is the building? and few inches of foam under the slab and around the outside of dug-in walls would help to maintain the heat for longer by not allowing the ground to sap the stored heat in the concrete, maybe be able to net a slightly longer shoulder

  11. Bigamehunter on April 4, 2021 at 12:05 am

    Nice set up, I would place some hardibacker or cement board between your wood boxes and the wood stove for added fire safety.

  12. Mimi B on April 4, 2021 at 12:05 am

    Love it

  13. Andre EWERT on April 4, 2021 at 12:06 am

    Have you considered <<grounding << your planters..ie connecting a wire to a rod in the Ground..I have heard that <<grounded<< planters do better than off-ground, ungrounded planters. Maybe Check into it.

  14. Ержан Шаркеев on April 4, 2021 at 12:07 am

    Мощно!!!

  15. webguyz1 on April 4, 2021 at 12:08 am

    Cost?

  16. bronze fennel on April 4, 2021 at 12:09 am

    Do you maintain a certain level of moisture in the air?

  17. Oby-1 on April 4, 2021 at 12:10 am

    A very well thought out greenhouse. Good job.

  18. Bruce A on April 4, 2021 at 12:11 am

    This is a basic greenhouse. Would be far better with a passive heat storage system (NOT the same as passive solar) using the earth around it. Homer is a tough situation because there aren’t many sunny days, winter OR summer.

  19. Greg Lewis on April 4, 2021 at 12:12 am

    Hey one quick question, no problems with 🐻 s breaking in?🤔

  20. Susan Bondurant on April 4, 2021 at 12:16 am

    Thank you so much for a video which gets straight to the point without "fluff chatter" and "annoying background music" that drowns out the speaker!!!!! Well done video! And I learned a thing or two!!!

  21. Francois Pienaar on April 4, 2021 at 12:16 am

    T5

  22. Camelot Daily on April 4, 2021 at 12:16 am

    Isn’t concrete toxic and killing the planet? https://www.bitchute.com/video/C3LMiOTA5uOT/

  23. Le Potager d'Adrien sur sol vivant on April 4, 2021 at 12:19 am

    A french experience mini bioclimatic passive greenhouse with sheep whool isolation and thermal blanket with french camargue reed
    https://www.youtube.com/watch?v=9dJB8cXqMIw

  24. J W on April 4, 2021 at 12:20 am

    So its a greenhouse?

  25. Tom Kelly on April 4, 2021 at 12:22 am

    It looks like a really nice greenhouse! Do you ever put an extra layer of plastic over the outside in winter to add a little bit of insulation there at night?

  26. Anthony Sinclair on April 4, 2021 at 12:24 am

    Now THAT’S a greenhouse! ; )

  27. Grow Your Heirlooms on April 4, 2021 at 12:25 am

    Smart planning in designing this greenhouse. Very nice

  28. Marty Mincer on April 4, 2021 at 12:26 am

    Emily Great job simple and functional, so many comments if you do this and put in a fan blah blah blah , it works thanks for sharing. I do have a few questions you said all in about 20,000, did you pour the walls your self and did you have a truck deliver the concrete or did you mix bags. I am asking because i am planning to build one of these. I would like to know also average day/ night temp without stove assistance. Thank you for the video and sharing your story wishing you the very best

  29. abundantYOUniverse on April 4, 2021 at 12:27 am

    Very good thanks!

  30. Greg Lewis on April 4, 2021 at 12:28 am

    Wow I love to come live up there !

  31. Genius by Design PRESS on April 4, 2021 at 12:28 am

    does NOT looks maxed to me

  32. Joseph Chepo on April 4, 2021 at 12:28 am

    Thanks greetings from TX!

  33. Super Sneak USA on April 4, 2021 at 12:28 am

    Just some food for thought lol … we’re trying to incorporate everything into one, as in we grow crops, raise quail & have a worm bin going. between the quail & worms, they are processing most of our organic waste, the quail manure goes into the worms, we get beautiful castings & tea. Just getting ready to put the plastic back on our green house, gonna bring all that in around the aquaponics table, hopefully the plan is the system will also produce heat for me …. planning on getting some chickens going to.

    I think that is why farmers of the past had their house about their livestock …. free heat ! I could see rabbits working well as their manure can be used immediately for fertilizer.

  34. bronze fennel on April 4, 2021 at 12:29 am

    Could you increase the temperature by adding composting materials to the floor during winter?

  35. noYOU'RE aHOOKER on April 4, 2021 at 12:29 am

    Please consider using black paint to coat surfaces that the sun shines on within your greenhouse. The color black absorbs and retains far more energy from the sun in the form of heat than any other color. Black stones and black water containers are particularly good at holding heat. Love the greenhouse, excellent work!

  36. ray bon on April 4, 2021 at 12:31 am

    thats pretty important getti g production all four seasons.

  37. larry .friend on April 4, 2021 at 12:32 am

    Your wood stove is archaic. Concrete walls are strong but of no real value as insulation or heat sink. Look at the rocket stove and also aircrete. Super insulating aircrete and the most economical heating available. With your temps, heating year round would require very little wood. Check out "Honeydo Carpenter" on Youtube.

  38. 【傳承道統】KJ on April 4, 2021 at 12:33 am

    The Chinese farmers living in northeast China has been using this similar techniques for two decades

  39. darthvader5300 on April 4, 2021 at 12:35 am

    Two layers of pre-measured and pre-cut and pre-chemically strenghtened glass that are flexible when very thin and can be folded like a ribbon (mid-1960s technology that all greenhouse owners should know, they are also used to make flexible glass springs!) but this time it will be thick (or glass ceramic panes). 2 layers of pre-measured and pre-cut and pre-chemically strenghtened glass (or glass ceramic panes) were used with a pre-measured and pre-cut silicone rubber interlayer in between them and bonded together with a dissolved silicone resin plastic. Neither extreme heat or extreme cold will past through the silicone rubber. This will be your outer layer greenhouse glass which will be bolted and glued air-tight and water-tight with the same dissolved silicone resin plastic. The second inner layer with be a single layer of pre-measured and pre-cut and pre-chemically strenghtened glass (or glass ceramic) that will be bolted and sealed with the same dissolved silicone resin plastic. Them the high-strenght military grade metal frame of the greenhouse on the outside and inside will be ELECTROSTATICALLY SPRAYED with a mixture of pre-dissolved silicone rubber-resin plastic coating to prevent heat and cold transmission from the outside to the inside. Then the space between the two greenhouse structures will be filled with pure carbon dioxide that will absorb and store the Sun’s heat which will be gradually transmitted through the inner pre-measured and pre-cut and pre-chemically strenghtened glass panes to provide warmth for the greenhouse.

    In Siberia we use the 2 layers of pre-measured and pre-cut and pre-chemically strenghtened glass were used with a pre-measured and pre-cut silicone rubber interlayer in between them and bonded together with a dissolved silicone resin plastic and the high-strenght military grade metal frame of the greenhouse on the outside and inside will be ELECTROSTATICALLY SPRAYED with a mixture of pre-dissolved silicone rubber-resin plastic coating to prevent heat and cold transmission from the outside to the inside. And inside are tanks made out out pre-measured and pre-cut and pre-chemically strenghtened pyrex glass tanks (or glass ceramic tanks) or yrttia-stabilized zirconia glass fiber reinforced KAPTON plastic tanks, sealed and contains BRINE that absorbs the Sun’s heat until it reaches near boiling point. The huge tanks will be able to capture store enough heat to be dissipated to keep the greenhouse safely warm for both plants and humans and animals.

    Other greenhouses uses the 2 layers of pre-measured and pre-cut and pre-chemically strenghtened glass (or glass ceramic panes) were used with a pre-measured and pre-cut silicone rubber interlayer in between them and bonded together with a dissolved silicone resin plastic. Neither extreme heat or extreme cold will past through the silicone rubber. But to grow also fast growing coppiced and/or pollarded willow trees or calliandra calothyrus trees for the Jean Pain Compost Method to simultaneously produce heat for heating through the winter through the compost fermentation process and produce carbon dioxide to help feed the plants (plants inhales carbon dioxide and exhales oxygen) and provide fertilizer once the compost has transformed itself into humus to be used as fertilizer.

    http://journeytoforever.org/biofuel_library/methane_pain.
    html https://www.google.com/search?biw=1600&bih=757&sxsrf=ACYBGNRGXUQSzIjmaC1_yT1p-zZ8Sq3LYA%3A1572129885581&ei=Xcy0XdqMI5at0PEPyJSZ-Ao&q=jean+pain+king+of+green+gold&oq=Jea&gs_l=psy-ab.1.0.35i39j0l7j0i131j0.1286847.1289501..1291798…1.2..2.78.483.7……0….1..gws-wiz…..10..0i71j35i362i39.xZv9k56UZBQ

    In the Siberian Arctic circle however, the greenhouses are vastly different. They use 2 layers of yrttia-stabilized zirconia glass fiber reinforced silicone rubber-silicone resin plastic panels with an interlayer of high-military grade strength stainless steel welded and interwoven silicone rubber over a greenhouse walls and roofs made out of Riveted bridge deck for flooringhttp://ohiogratings.com/Content/pdfs/product/bridge_brochure.pdf .

  40. Greg Lewis on April 4, 2021 at 12:36 am

    Thank you for making this video!

  41. jean-michel gauthier on April 4, 2021 at 12:36 am

    Whouiiiiii. Je suis le 45 000ieme visiteur.

    Vos videos sont toujours intéressantes.
    J’aime beaucoup la ferme d’Emily

  42. Heather Karow on April 4, 2021 at 12:36 am

    That’s an awesome greenhouse! Kudos to you!

  43. Annie Lariviere on April 4, 2021 at 12:39 am

    The glazing angle is for glass due to the reflection aspect of glass with polycarbonate its an issue

  44. Dale Val on April 4, 2021 at 12:39 am

    Tell me about the buds please 😉

  45. Robert Crain on April 4, 2021 at 12:40 am

    That is a well though out operation. One of the challenges I have here in Central Oregon Cascades is 2 to 4 feet of snow pack can cover much of lower part of greenhouse during winter.

  46. Александра Устинова on April 4, 2021 at 12:41 am

    Пассивная теплица?
    А печка не в счёт?

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