8 votes

If I harvest bell pepper, will it grow back? (I control the temperature in my small greenhouse)

Will the pepper grow back? Not exactly. However, after you harvest the pepper the plant likely will produce more flowers, which can be pollinated and grow into more peppers.
GardenerJ's user avatar
  • 5,879
7 votes

Plastic sheet for greenhouse

With greenhouse plastic there are some issues to keep in mind. First, if you are considering a longer term installation then UV light will quickly shatter regular plastic. UV resistant plastics are ...
Colin Beckingham's user avatar
6 votes

How to safely keep plants in greenhouse at low temperatures

Adding to @Ecnerwal excellent answer - Draped row covers will provide a little additional support by trapping in more heat - maybe 1-3 degrees c - the key would be to take them off during the day to ...
davidgo's user avatar
  • 4,093
6 votes
Accepted

How to safely keep plants in greenhouse at low temperatures

Plants grown warm, indoors, will need hardening off to transition to an outdoor greenhouse that's unheated. One aspect you may not have considered with a "simple greenhouse" is cooking the plants on ...
Ecnerwal's user avatar
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6 votes
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Should I cut tomatoes once they reach the top of the greenhouse?

You could do this, and it could indeed strengthen the remaining fruits - another option may be to encourage the plant to grow back downwards.
davidgo's user avatar
  • 4,093
5 votes
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Should perennials purchased at a greenhouse nursery be acclimatized before planting outside?

If the plants apparently have never (or not for a while) been exposed to strong sun and wind, I would definitively recommend hardening them off or shielding them a bit: If the plants look basically ...
Stephie's user avatar
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5 votes
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Effect of white/black polythene floor in polytunnel

White up reflects more light to the plants, and keeps the soil cooler (from sun) probably also keeps fuel-based heat in the soil better if the ground was what was being heated in the commercial ...
Ecnerwal's user avatar
  • 23.8k
5 votes

What color should a greenhouse be?

Several of the answers here are incorrect. Green plastic absorbs green light or reflects it which is why it appears green. Green is chosen because if you want to reduce the light intensity to the ...
Graham Chiu's user avatar
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5 votes
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How can I tell if my greenhouse plastic film is facing the right direction

It depends somewhat on "WHAT" the inside/outside properties are. If they include an "anti-drip" or AD coating, that should be on the inside, and you might be able to see that water beads up less and ...
Ecnerwal's user avatar
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5 votes
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How do you grow a plant not in your hardiness zone?

Growing plants in different climate zones can be a challenge. For people in warm climates. The first thing you need to do is make a plan. And research the climate your plant grows in likes. At our ...
David Wisniewski's user avatar
5 votes
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Big cactus identification and how long does it take?

The two plants on the left are either Carnegiea gigantea or Saguaro or Pachycereus pringlei or Mexican/Sonoran Saguaro. They look very similar at this stage. They look to be 10-15 years old. My ...
Tim Nevins's user avatar
  • 3,218
4 votes

What color should a greenhouse be?

While looking for an answer to this question myself, I came across this article which talks about actual studies that have been done regarding the colour of plastic greenhouse covers. In particular it ...
DuncanKinnear's user avatar
4 votes

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

I know this is an old post but I want to thank you Brian for bringing this very important and potentially costly topic to our attention. I am going through this same experience setting up 2 low ...
toesmcfoot 's user avatar
4 votes

Growing temperate and some tropical plants in an indoor 'winter garden' in Ireland

First of all, I want to caution you regarding the amount of humidity a grow room is going to produce, especially if it's heated. Depending on what your walls are made out of, the humidity may ...
Brōtsyorfuzthrāx's user avatar
4 votes
Accepted

Growing temperate and some tropical plants in an indoor 'winter garden' in Ireland

more light = more growth, although I'd imagine if you are growing this for personal edification rather then produce yield, this will be much less of a factor. If I understand the Light value of 62 ...
davidgo's user avatar
  • 4,093
4 votes

Growing temperate and some tropical plants in an indoor 'winter garden' in Ireland

Each pane of glass will reduce the number of lumens coming in which means less light for your plants, which as close to the arctic circle as you will be will starve your plants for light during the ...
Escoce's user avatar
  • 6,396
4 votes

How to safely keep plants in greenhouse at low temperatures

As a resource you can consider Eliot Coleman's The Winter Harvest Handbook: Year Round Vegetable Production Using Deep-Organic Techniques and Unheated Greenhouses which discusses growing in unheated ...
Graham Chiu's user avatar
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4 votes
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How to prepare plants to move to greenhouse from indoors?

Principle is basically the same; gradual acclimation to different conditions. In your case the different conditions are the greenhouse, not "outside" (or at least not yet) but otherwise the process is ...
Ecnerwal's user avatar
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4 votes
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How to get crisp lettuce in a green house

@Ecnerwal answer is correct, the book "The Winter Harvest" by Eliot Coleman [speaking of some vegetables including Lettuce] states "No only do many of them tolerate cold conditions and even ...
davidgo's user avatar
  • 4,093
4 votes

How to get crisp lettuce in a green house

Turn off the heat, open all the vents - add more vents if that's not enough, or just grow the lettuce outside, if you like outside grown lettuce better, or want other crops/plants that are not as ...
Ecnerwal's user avatar
  • 23.8k
4 votes

What are colors other than clear suitable for avoiding the heat inside a greenhouse?

I'm rather wondering why you need a greenhouse in such a hot region, but regarding shading of greenhouses, you can buy green coloured shading, usually plastic or polycarbonate of some sort, see link ...
Bamboo's user avatar
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4 votes
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What type of plastic covering would be good for a heated greenhouse in the winter?

They make "overwintering film" (4mil, I think) which is supposed to work for 1 season. I have no experience with it. I have considerable experience (by now) with 4-year, 6 mil, IR-UV-AntiDrip ...
Ecnerwal's user avatar
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4 votes
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Should rain water be allowed to flow directly into greenhouse?

One of the cool features of greenhouses is that you have more control. Storing water makes more sense rather than hit or miss by rain...to include over watering. Our gardens are always going to be ...
stormy's user avatar
  • 40.3k
4 votes
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How to setup a green house that loses heat but not humidity

One solution I've seen to balance the temperature in a green house without requiring you to vent is using an earth-air recirculating system or geothermal heat pump. A very simple DIY version if you ...
greggles's user avatar
  • 1,434
4 votes
Accepted

Is 90% - 95% humidity too much for mint / basil / tomatoes?

A greenhouse should have roughly 50-70% humidity depending on what you are growing. Yes your humidity is far too high. As far as throwing the thing away I would say no. It is still perfectly usable ...
Rob's user avatar
  • 1,670
3 votes

What are colors other than clear suitable for avoiding the heat inside a greenhouse?

I've used a product called Aluminet here in Phoenix, AZ. It's a shade cloth available in a variety of shade levels. It reflects some light and diffuses the light passing through, so it' different than ...
Tim Nevins's user avatar
  • 3,218
3 votes
Accepted

Material choices for DIY greenhouse

That's a pretty short season and your main issue is going to keep the greenhouse warm at night. During the day if it gets enough sunlight it can get quite hot on it's own. So much so you will probably ...
OrganicLawnDIY's user avatar
3 votes

How to safely keep plants in greenhouse at low temperatures

I have gardened for years,too many to count. The most success I have had has been to keep the greenhouse area above 10 celcius at night, water your plants so they do not take up all the moisture when ...
Helene's user avatar
  • 31
3 votes

What color should a greenhouse be?

There are other questions to ask. Where are these Green covers coming from and which market were they designed for? Perhaps for example these green plastic greenhouses were made in China. Now since ...
Izzzzzz6's user avatar

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