Greenhouses forum: Greenhouse Heating

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Bellingham, WA
MenehuneGrower
Aug 2, 2017 4:36 PM CST
Aloha fellow growers,

Ok so I am about to embark on my first greenhouse adventure. I'm moving to Bellingham, Washington in a couple of months and starting an ag business with my brother.

We are currently in talks with Monster Gardens and also Emerald Kingdom greenhouses to purchase a high-wall greenhouse kit from them. The big discussion, currently, is on the need to heat the greenhouse from October to May during the colder months. You can see our historical annual weather data here: usclimatedata.com

The greenhouse we are looking at is 30ft x 52ft (High-wall Design)

Does anyone have any experience and advice to offer me on what type of heating system to use? We wanted to stay away from gas powered systems and lean more toward an electrically powered heating system. We would like to keep our greenhouse between 60°F - 80°F through the winter months where the temperature dips to as low as the mid-30's (°F).

Thank you in advance to anyone who can shed some light on the situation and help us to make a good decision on our purchase!
Name: Carol
Santa Ana, ca
Sunset zone 22, USDA zone 10 A.
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ctcarol
Aug 2, 2017 6:14 PM CST
I can't help you, but we do have a greenhouse forum that would probably be helpful. Scroll through the communities at the top of the home page to find it.
Name: Kristi
east Texas pineywoods (Zone 8a)
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pod
Aug 6, 2017 11:39 AM CST
I'm afraid I have no experience with the size of your proposed greenhouse nor with those temps.

Before making a decision, I would tour the area greenhouses and pick their brains about the type of heating they use as well as the cost of heating.

May I ask what you will be growing that will require that high a constant temp?

Be content moving inch by inch because, by days end, the inches, will add up to feet and yards.

Fulfilling ambitious objectives is usually done one step at a time.
Name: Karen
NM (Zone 7b)
Region: New Mexico Region: Arizona Cactus and Succulents Greenhouse Sempervivums Bromeliad
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plantmanager
Aug 6, 2017 12:06 PM CST
I'm the same with no experience. My tiny greenhouse uses a small electric heater to keep it at 60 because I have tropicals. Kristi had a great suggestion to tour local greenhouses and pick their brains.

If you get a chance, visit Flower World which is about 75 miles from Bellingham, in Snohomish. They have large greenhouses and it would be a fairly similar climate.

http://www.flowerworldusa.com/
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Name: Julia
Washington State (Zone 7a)
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springcolor
Aug 8, 2017 11:24 PM CST
You might contact Steuber Distributing Snohomish, 360-568-2626
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Bellingham, WA
MenehuneGrower
Aug 8, 2017 11:58 PM CST
Thank you! Great advice. I will be contacting Steuber and Flower World. I've found a lot of info since my last post. I will be sure to check back in with an update as soon as we get it figured out so anyone else looking here for the same answer can benefit.

Happy growing and thanks again!
Name: Julia
Washington State (Zone 7a)
Garden Photography Region: Pacific Northwest Celebrating Gardening: 2015 Forum moderator Plant Database Moderator I was one of the first 300 contributors to the plant database!
Dog Lover Foliage Fan Greenhouse Container Gardener Heucheras Sedums
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springcolor
Aug 9, 2017 12:07 AM CST
You might also pop in to the snohomish Garden Center , they have big greenhouses see what the setup is there. Think it's gas though. Just minutes from steuber.
Sempervivum for Sale
[Last edited by springcolor - Aug 9, 2017 12:08 AM (+)]
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Name: Julia
Washington State (Zone 7a)
Garden Photography Region: Pacific Northwest Celebrating Gardening: 2015 Forum moderator Plant Database Moderator I was one of the first 300 contributors to the plant database!
Dog Lover Foliage Fan Greenhouse Container Gardener Heucheras Sedums
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springcolor
Aug 9, 2017 12:10 AM CST
Have you looked a Joe's Garden, close to Hagen in Bellingham. They have good sized greenhouses, maybe he could help!
Sempervivum for Sale
Name: Karen
NM (Zone 7b)
Region: New Mexico Region: Arizona Cactus and Succulents Greenhouse Sempervivums Bromeliad
Adeniums Garden Ideas: Level 1 Tropicals Xeriscape Garden Art Plumerias
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plantmanager
Aug 9, 2017 9:47 AM CST
We'd love to know what you plan to grow!
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rogersmithiii
Aug 10, 2017 12:45 PM CST
Curious about why those two companies? I too am looking for a quality greenhouse in 30 by 40 by 10. Looking at Rough Brothers, and Greenhouse Megastore.

So much of what's out there is cheap, poly film hoop houses that tend to collapse when my world welcomes winter.

Bellingham, WA
MenehuneGrower
Aug 10, 2017 1:41 PM CST
rogersmithiii said:Curious about why those two companies? I too am looking for a quality greenhouse in 30 by 40 by 10. Looking at Rough Brothers, and Greenhouse Megastore.

So much of what's out there is cheap, poly film hoop houses that tend to collapse when my world welcomes winter.


Those companies are offering competively priced kits that are pretty strong. I decided after research and consideration to just build one myself, modeling it after emerald's design.

I'm putting more hoops in to beef it up and my brother, who happens to be a structural engineer, is drawing up the plans for me and calculating snow loads.

I know, that's really lucky, but honestly if your going to buy a kit you will be building it yourself anyway. Might as well source the parts yourself too.
Name: Karen
NM (Zone 7b)
Region: New Mexico Region: Arizona Cactus and Succulents Greenhouse Sempervivums Bromeliad
Adeniums Garden Ideas: Level 1 Tropicals Xeriscape Garden Art Plumerias
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plantmanager
Aug 10, 2017 2:17 PM CST
I agree, and it would have been much cheaper to buy the parts and build one ourselves.
What will you grow?
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Name: Sandy B.
Ford River, Michigan UP (Zone 4b)
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Weedwhacker
Aug 10, 2017 4:07 PM CST
rogersmithiii said:Curious about why those two companies? I too am looking for a quality greenhouse in 30 by 40 by 10. Looking at Rough Brothers, and Greenhouse Megastore.

So much of what's out there is cheap, poly film hoop houses that tend to collapse when my world welcomes winter.



Roger, are you speaking from experience, or just making an assumption?

I have a cheap, steel-frame, 7x15' hoop house covered with inexpensive 3-mil plastic that has had no problems whatsoever in the winter (other than the year my cat decided to jump onto the top of it from a snowbank...) The snow for the most part just slides off on its own due to wind or when the inside of the HH warms up when the sun comes out. I do put a couple of center support posts inside the HH for the winter, though -- just in case. Smiling
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Name: Kristi
east Texas pineywoods (Zone 8a)
Winter Sowing Cat Lover Dog Lover Vermiculture Birds Bulbs
Canning and food preservation Butterflies Composter Bromeliad Bookworm Greenhouse
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pod
Aug 10, 2017 7:59 PM CST
We don't see snow too often but an interesting side effect in my greenhouse was when we did have snow, it helped to insulate the interior and kept it warmer. That wouldn't work long term as the snow blocked the light as well.
Be content moving inch by inch because, by days end, the inches, will add up to feet and yards.

Fulfilling ambitious objectives is usually done one step at a time.
Bellingham, WA
MenehuneGrower
Aug 10, 2017 9:13 PM CST
plantmanager said:I agree, and it would have been much cheaper to buy the parts and build one ourselves.
What will you grow?


I'll be growing Industrial Hemp. I tip my hat to you.
Name: Karen
NM (Zone 7b)
Region: New Mexico Region: Arizona Cactus and Succulents Greenhouse Sempervivums Bromeliad
Adeniums Garden Ideas: Level 1 Tropicals Xeriscape Garden Art Plumerias
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plantmanager
Aug 10, 2017 9:44 PM CST
Interesting! I thought it was grown outdoors.
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Bellingham, WA
MenehuneGrower
Aug 11, 2017 7:40 PM CST
plantmanager said:Interesting! I thought it was grown outdoors.


Eventually everything will be grown in greenhouses hydroponically. We have to maintain some controls for our data to be accurate
Name: Karen
NM (Zone 7b)
Region: New Mexico Region: Arizona Cactus and Succulents Greenhouse Sempervivums Bromeliad
Adeniums Garden Ideas: Level 1 Tropicals Xeriscape Garden Art Plumerias
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plantmanager
Aug 11, 2017 9:12 PM CST
True! Good luck with it. From what I've read the hemp will be used more and more for everything.
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