Glass building to shelter and heat plants

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1answer
32 views

How much UV light should I block when shading my greenhouse?

I have a home greenhouse attached to our home. I was thinking about removing the existing shade cloth and replacing it with sunblock film on the upper glass panels. I grow a variety of foliage plants ...
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2answers
108 views

Improving heat retention and light availability of coldframes

I am currently planning on building some grow-houses/cold frames. Actually mostly raised beds 18" (45cm) high, with the ability to fit panels over it in winter turning them into cold frames. The rear ...
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2answers
234 views

What thickness of twinwall polycarbonate should I use for my greenhouse?

I bought a cheap grow house with 4 shelves for growing herbs but the wind has knocked it about and it is starting to lean to one side a bit more than it should. I plan to build a wooden frame, to ...
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1answer
71 views

What can be planted at this time of year in a greenhouse (in the UK)?

Normally we plant tomatoes and cucumber in our greenhouse during the summer here in the UK. We didn't do so this year, but I was wondering what could be planted in a greenhouse, if there is anything, ...
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0answers
71 views

Protecting winter potatoes from frost with a growhouse

In the first week of August I started my first attempt at growing potatoes, in grow bags. Actually just got the miracle-gro root vegetable bags from garden centre and seed potatoes, so the mix should ...
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1answer
55 views

Is drainage important in Greenhouse beds?

I just finished building my first greenhouse! I built in beds on the shelves along the wall that can have up to 10 inches of soil. (I'm planning on putting 8 inches in.) I lined the bottom of the beds ...
3
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1answer
1k views

Glass vs plastic greenhouse covering: pros and cons

When building or buying a greenhouse, it seems to me that the material to use is one of the first concerns. The two options I'm trying to compare right now are glass and plastic films. The ...
2
votes
1answer
92 views

How well would mediterranean plants/trees grow in a greenhouse in northern Europe?

This is the situation: I live quite far up north (Trondheim, Norway), and wish to achieve greater diversity in yield from the garden. Although the climate is not as tough as the position would suggest ...
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1answer
243 views

What chemicals react with greenhouse plastic and cause it to turn white?

I have a small PVC hoop house that I built last winter and plan on using again this winter. I found out first hand, then read about it later on, that the plastic used for greenhouses will react with ...
1
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1answer
155 views

Growing Lilies In Greenhouse References

I'm looking for any kind of references (book , video , PDF , ...) for growing lilies in greenhouse. I heard Lilies are like a child and they need standard growing plan such as irrigation plan , ....
5
votes
1answer
81 views

Is it important to keep greenhouse glass thoroughly clean?

My greenhouse is near some fruit trees and every spring when I come to start off the growing season I find a certain amount of grime has settled across the glass over the preceding year. Most years I ...
7
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1answer
157 views

Would an old refrigerated food display case make a good greenhouse?

I came into the possession of one of these: I want to know if it would make a decent greenhouse and, if so, how I could retrofit it to grow some kind of small plants or seedlings. I think the ...
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3answers
2k views

How to automatically vent a cold frame during the Winter?

I am working on building a cold frame and have purchased a Univent automatic opener to vent the cold frame by lifting the lid/light. However the Univent opener is not supposed to subjected to ...
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3answers
1k views

Building a DIY greenhouse - where to start?

I'd like to build an inexpensive, removable greenhouse over the back deck. The deck is approximately 20' x 8'. I'd like to build it for easy disassembly and storage in the summer. I've never seen ...
16
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3answers
3k views

How large a cultivation area to feed one person?

Consider a project like the Earthship. Supposing one would like to grow food (organic polyculture) indoors in such a habitat (i.e. in a green house). How many m² would be required to feed one person ...
12
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3answers
979 views

What is the point of a greenhouse?

How does putting my plants in a greenhouse help them grow? Is it purely to shield them from cold weather, or are there other benefits?