Gardening and Landscaping Stack Exchange
Gardening and Landscaping Stack Exchange

Questions tagged [greenhouse]

Glass building to shelter and heat plants

A greenhouse is a glass-walled building intended to shelter and provide a warm environment for plants. They are typically used in cooler climates. The glass allows the building to absorb the maximum amount of sunlight available, but restrict heat loss (roof sections typically allow ventilation and some heat control). Some greenhouses also have their own heating.

Use this tag for questions about greenhouses themselves, and growing in a greenhouse environment.

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Effect of white/black polythene floor in polytunnel

The oldish, commercial, heated hothouses I have have a floor with a layer of polythene which is black on one side and white on the other - with the white side facing up. What are the pros and cons of this ? Is worth throwing some down on the floor…
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Growing temperate and some tropical plants in an indoor 'winter garden' in Ireland

I am in the lucky position of building my own house in Southern Ireland and have have a 'winter garden' room which will have three tall walls of glazing with one side facing south. The roof is very high so a lot of light will be let in. I plan on…
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What is a 4 season greenhouse wall/ceiling made of?

What material would I want to use to build the walls, and ceiling of for a 4 season greenhouse around the 45N,93W (4a)?
black thumb
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Can I use the output from a house boiler to heat a greenhouse?

I live in relatively cold, rainy Manchester in the north of England and have been experimenting with growing chillies and tomatoes. I've found that they are fine indoors, but die quite quickly outdoors, presumably form the cold. I have an output…
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Is it OK that the polyethylene sheeting for our greenhouse is opaque, not clear?

We purchased 4mil polyethylene that was supposed to be 'clear' but it is opaque white. We can not see through it at all. Is this normal? Will this work for one year?
stormy
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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 and it is partially shaded by trees as well. Most…
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Protecting winter potatoes from frost with a growhouse

In the first week of August (2013) I started my first attempt at growing potatoes, in grow bags. Actually got the miracle-gro root vegetable bags from garden centre and seed potatoes, so the mix should be ideal. The seed potatoes are Maris Peers in…
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I keep getting differing answers to this cucumber question

I was always told to remove the male flowers from a cucumber plant or the fruits will be bitter, I then read "female flowers need to be pollinated with the male flowers or the fruits will not set", then I read "only outside growing of cucumbers need…
Roy Bonsall
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Is 90% - 95% humidity too much for mint / basil / tomatoes?

I just got a new Socker greenhouse from Ikea and have been trying to grow herbs inside of it. I noticed my mint and basil started to grow brown spots and a chopstick I inserted into the soil has this white mould growing on it after 3 days. The…
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How to setup a green house that loses heat but not humidity

I'm deciding to build a green house to grow some of my favorite plants. My place is quite hot and dry, and water is very precious. My priority is to keep humidity inside. But I couldn't find a solution about that. The normal green houses use fans…
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Should rain water be allowed to flow directly into greenhouse?

I see a lot of talk about storing rain for later use in a greenhouse... But what about letting the rain flow into the greenhouse instead of storing it? If a small 6'x9' greenhouse has gutters, would there be more harm than good if the gutters…
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Should I make a mini-greenhouse for my temperature-sensitive bonsai?

I have a 5 years old Fukien Tea, which just arrived in home. I live in the south of Spain, and my city has strong temperature changes. The temperature goes aprox. like this: Spring: 20 - 25 º Celsius / Fahrenheit 68 - 77 º Summer: 35 - 40 º C / …
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Do tomato plants like temperature and humidity changes?

I am growing some tomatoes in pots in a toy greenhouse. I've put a thermometer/ humidity meter inside. The relative humidity changes from around 55% to 75%, and correspond to highest temperature of 26 Celsius (79 °F) and lowest around 17 °C (63…
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How can I tell if my greenhouse plastic film is facing the right direction

I just built a polytunnel with pvc pipes and special greenhouse film. This film has an inside and an outside. I'm pretty sure the text on the film that says 'inside' was facing the correct way when I installed it, however, I'm now second guessing…
stemie
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What is this substance that looks like red sap on my cucumbers?

I have this weird red sap on a few of my cucumbers. I was wondering if anyone has seen this before? These cucumbers were grown in our conservatory in the back garden (facing south) in pots, grown up bamboo canes (not sure how helpful this…
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