r/Greenhouses 5d ago

Assembly help

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2 Upvotes

Hi, I got the jiliusure greenhouse model FBY-LEY-SGH02-GY off Amazon. In trying to assemble it we have run into the issue of the vent panel support beam not fitting snugly. If it’s put in the groove its supposed to fit into, the top of it isn’t flush to the roof (see pictures). We've tried flipping the beam around. We've tried just forcing it (see scratches). Does anyone have any advice to make this fit? thank you


r/Greenhouses 5d ago

Level this ground or build greenhouse on deck?

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6 Upvotes

Looking to install a 6ft x 10ft greenhouse in this corner. The ground slopes away slightly, as you can see compared to the horizontal beam on the left fence. I will also be building a deck along the back fence up to the greenhouse, but am open to extending the deck all along and putting the greenhouse on the deck if it’s safe to do so.

Would it be easier/better to:
A) create a level foundation at ground level to install the greenhouse on
B) install the greenhouse on the deck since I’m only planning on growing in pots and containers anyway

If I went for A how should I go about creating the foundation? If I went for B (if it’s even okay to do so) how can I get around the deck boards being wet and the void beneath making the greenhouse cooler?


r/Greenhouses 5d ago

Looking for advice on creating greenhouse

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7 Upvotes

I bought some 6mm UV resistant greenhouse plastic to wrap around our old chicken coop frame to create a greenhouse, was wondering if anyone had advice on the best way to attach the plastic to the coop frame

I was thinking zip ties or something but other ideas are wanted, thanks


r/Greenhouses 5d ago

Zone 7B Balcony Greenhouse!

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9 Upvotes

I built this PVC greenhouse yesterday as many of my vegetable plants were burning from the sun, and getting damaged from the wind.

Wondering if anyone has suggestions in keeping it 100% windproof, and a more sustainable door situation? Right now, the door is built with two hinges/pvc pipe at the top of the roof, so it’s quite heavy.


r/Greenhouses 5d ago

What are these?

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28 Upvotes

Pests of some kind, I imagine. I hope they're not thrips. I'm catching this fairly early on so I'm hoping to take care of them. Any help is appreciated, thank you


r/Greenhouses 5d ago

Inspired, I built my own custom greenhouse from scratch

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1.3k Upvotes

r/Greenhouses 6d ago

When to utilize shade cloth in greenhouse?

9 Upvotes

I’m in a 100 x 32 foot greenhouse in southern Virginia. When should I take the shade cloth off? Im thinking October…. My dad grows 550 tomato plants in the other greenhouse and he has already taken his shade cloth off already. Weed and tomatoes are different though…Right?


r/Greenhouses 6d ago

First DIY greenhouse help/advice

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35 Upvotes

Hey Everyone, I am building my first greenhouse and I wanted to post my rough thoughts and questions here for feedback. I have built other structures before, but nothing so close to the house and quite as robust as I would like to for this. I am just outside Atlanta GA in Zone 7a/b, I have a ton of tropical and citrus plants so I would like to try and keep 50+ degrees in the winter so I could grow year round, but really anything over freezing would work. Any and all feedback would be greatly appreciated.

The attached picture is where we plan to build the greenhouse. The size of the greenhouse is 9'x16' and will fit between the two paths/doors shown here. I will pretty much sit right on top of all the green material.

After reading some threads on here, I am shying away from actually attaching it to the house, but instead just going to build it kind of like a floating deck... just adjacent to the house, but open on one side to the brick. I want it open to try and take advantage of some of the house "heat sink" effect but also for easy access to the hose and so I can open the window shown in the picture.

For the floor I was thinking of laying down a line of cinderblocks or thick pavers (I would prepare the soil underneath the pavers with sand and gravel) around the perimeter for the structure to rest on so it is off the ground and then inside the cinderblocks I was going to just do a floor of gravel.

For the 4 corners I was going to sink 4x4 in a hole filled with concrete, making sure the concrete ended above the soil level so the 4x4s stay dry

For framing I planned to use lumber, pressure treated for the lower boards and any 4x4s needed for corners/support. Anyone have any experience with this and how well the wood holds up?

For walls, I found some double pane glass windows (picture here) for pretty cheap. Any issues people see with having glass window walls? I plan to use these and just frame them in with wood.

For the roof I want something with a little more protection and the consensus on here seems to be for double thick poly carb. I would love any additional thoughts on this, but one question I have is for venting. How have people built venting into their roof? I obviously want to be able to open and close it easily and I would love something that I can make automated for when temperatures get to a certain point, but not really sure how to DIY. I also don;t want to leak like a sieve when its closed.

For venting I also plan to have a large fan fixed into the top of the wall on the far wall (facing the fence) and then have a large vent opening on the opposite wall so air can pull through) does this seam like it would be enough? The spot gets a good bit of shade in the summer time from the surrounding trees.

Other misc. items

I plan to pull water from that spigot shown and put a small mud sink in, I will bury a corrugated pipe out to the back of the property with the rest of the rain pipes for drainage. I also plan on using a rain barrel to help capture additional water as well. I eventually want to have a serious of misters and drip lines running so that I a couple weeks and have the entire system automated to run

I plan to pull electricity in from the house to run lights and things like that.

I would love to incorporate some food grade diatomaceous earth in somehow to help with pest control, anyone know if this would cause problems or have any experience with pest control in a greenhouse?

Like I said, these are my rough thoughts before I start investing time and money. I would love to hear peoples thoughts on these plans or if they see any major concerns or something I missed. I would also love to hear about any tips or tricks people have used with their own builds that have been super helpful and might be applicable.

I will make sure to keep updating as I make progress and thanks everyone in advance!


r/Greenhouses 6d ago

Flashing for Polycarbonate Panels to House Siding for Attached Solarium/Greenhouse

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3 Upvotes

Before we begin: I am aware that the polycarbonate panels in these pictures should not have been installed horizontally the way the previous owners had it done. I am about to redo the whole double walled polycarbonate roof and do it the correct way- with cells aligned vertically.

With that out of the way:

Bought this awesome 40+ year old house in Colorado about a year ago with an attached solarium/greenhouse that's a little less than 1000 sq ft on the ground. It has this domed / curved roof that directly attaches to the house as a passive solar heat source that worked VERY effectively this winter. The roof material is about 15 years old, is leaking and obviously showing its age, some is hail damage which has penetrated the top layer of cells, but a lot more of which is from the incorrect horizontal installation, where tons of the cells are filled with water and debris (causing freeze/thaw damage), I don't think thermal expansion was accounted for, and they used tiny washer metal roof screws instead of 1" washers, etc etc.

I've already bought all the new 10mm double wall polycarbonate panels to replace the roof, they are sitting in my garage, so can't back out on that. My question for y'all because my supplier who's sold these panels for 40 something years has never seen this done: How should I seal to the house siding above the curved edge along the top of the panels?

A few other factors worth also noting:

  • I'll be replacing the wood siding seen in the pics with new TruWood (particle board) painted exterior grade siding panels before installing the new roof panels, so a flatter surface without the wood siding open flutes to deal with. Already bought those panels too.
  • It's curved, with a ~10ft radius (the 10mm double walled polycarb I got is rated up to 6ft radius curves, so we're good there).
  • Standard metal/steel flashing probably won't play along that curve without cutting the top side, which seems to me to defeat the purpose of flashing by introducing new water entry points, but if there's a way it can be done correctly, I'm open to it. Just need pics/descriptions of an example that works if such a thing exists. Is aluminum flashing a thing?
  • Polycarbonate shouldn't have silicone or adhesives that isn't rated for plastics attached to it, and even if it is rated for it specifically (no acid/solvents that degrade plastic), it still becomes a maintenance issue because generally things don't like sticking to polycarbonate long term with thermal expansion/adhesion issues. I'm aware of Sikaflex 521-UV or OSI Quad Max Clear as possibilities.
  • I'm hoping to find a solution that doesn't require annual or any less than say 3 years of regular reapplication to keep leaks from happening, and I'm not sure a sealant like these would give me that unless someone has had a different experience.
  • It currently leaks along that edge in spite of the metal roof overhang above and previous attempts at silicone along that edge (former owners and me, using something that I knew was plastic safe, but also plans to replace it all soon enough to not matter too much).
  • Was considering EPDM / rubber butyl flashing tape like they use on standard flat roofs (flexible!) but am concerned that might degrade with our 9000ft altitude UV and won't adhere long term to polycarbonate.

I'm more interested in trying to do this right (low maintenance) than I am concerned about the cost. If there are miracle material(s) that can help me accomplish this with all the curved dome plastics to flat siding factors in play, I'm all ears.

Hopefully someone out there has seen something like this done successfully! I know it's unique and that's one of the many things I love about this house- the coolness and the challenges.


r/Greenhouses 6d ago

Small 5 x 6 greenhouse suggestions? Canada

2 Upvotes

I have a slab in the yard already that can accommodate a 6 x 5 greenhouse. Ideally with the door on the long side but I could make the end work if necessary with some digging and concrete.
So many brands!!
Willing to spend a bit more but want something I can see through- not opaque- so I can enjoy being in there and watch birds etc when it’s cooler out.
It gets little sun in winter but would be for seed starting and hot plants in summer (eggplants etc) when it gets about 6 hours.
Im in Canada so something I can buy here.
Suggestions??
Thank you!


r/Greenhouses 6d ago

CEA vs Hydroponics vs Aeroponics: What Vertical Farms Use in 2026

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2 Upvotes

r/Greenhouses 6d ago

Newbie Building a Greenhouse.

1 Upvotes

Like the title says, I am a newbie looking to build a greenhouse for some urban growing. I live in about a 7a zone and want to extend my growing season a bit more.

My plan right now is to build a half-hoop greenhouse out of some pvc and spare wood I have from other projects. For the most part, I want it to have raised beds and bucket planters because the city soil is just clay filler dirt from all over the county. Last year's garden couldn't even grow tomatoes directly in the ground lol. What I have planned is:

H.) 8'

W.) 8'

L.) 8'-12'

And I plan to build it in my small back yard about 2 feet off of my existing house as to not disturb the existing structure.

Any tips are helpful and I can divulge more as the questions come.

Edit to add: I have about 1000sqft of 6mil polyvinyl plastic wrap that I plan to use as a cover.


r/Greenhouses 6d ago

Put this up and day one was over 100 degrees in April. Now even with the vent fan and doors open it’s over 100. Shade cloth advice for poly greenhouse?

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119 Upvotes

I’m hoping others could advise, I’m considering some shade cloth across the side and top but am worried about it affecting the UV coating. Am I overthinking that? We have trellises and hangers on the inside that would make it tough to do them inside.


r/Greenhouses 6d ago

Passive Solar Thermal Heat Transfer Design Question

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1 Upvotes

r/Greenhouses 7d ago

How to attach raised shade cloth?

5 Upvotes

I’ve read it should be 12” above the roof but I cannot build a frame around my greenhouse to hold the shade cloth. Many suggest using spacers but I cannot find any examples of people using spacers and how they attach them to their greenhouses. Most pictures I find seem to just put the cloth right on the roof but I’ve read that doesn’t really help with cooling as much

can anyone with spacers share pics of what you use and how they’re attached?


r/Greenhouses 7d ago

Seeking Heating Options

1 Upvotes

I’m building a Walipini greenhouse, hoping to have it operational by the end of summer. The more I dig, the larger I want it to be. Heavy clay soil. Earthen walls, pallet wood, framing and support for repurposed windows.

I have leftover solar from an old project and am considering a 12v heat source. Should I find an ordinary blower, heat mats? Is it practical to fashion a cavity out of clay like a rocket stove? Please advise.


r/Greenhouses 7d ago

Rainstorm

165 Upvotes

There’s something magical about being in the greenhouse during a rainstorm.


r/Greenhouses 7d ago

Greenhouse Planting Setup

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84 Upvotes

r/Greenhouses 7d ago

Fan size for greenhouse

1 Upvotes

Have a 6x8x6 greenhouse, what size fan do I need to circulate air and pull some heat out?


r/Greenhouses 7d ago

Brown algae removal

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2 Upvotes

I have brown algae on the frame and glass in my greenhouse. On glass I can generally remove it with dish soap and a plastic mesh scrubber.

On the frame I was able to scrub some off with vinegar and dish soap and a rotary scrubbing tool but it only works on flat surfaces and takes forever (picture 2).

I tried a stain remover with bleach that didn’t make it easier.

Anyone else found a solution to remove this stuff?


r/Greenhouses 7d ago

Does anyone know what these gap sealers are on our greenhouse? Need to replace some.

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4 Upvotes

r/Greenhouses 8d ago

ANTS

9 Upvotes

Omg theres ants everywhere all the time!! Every time I move something in here I find a new colony. I always throw whatever they're nesting in outside and they quickly dismantle and move somewhere else (I think). But its driving me crazy!!! Just started to harvest my potatoes but had to stop because there's another colony living in there. I'm pesticide free so I don't really know what to do other than rearrange the greenhouse every couple of days.

Also really don't know what to do about my potatoes. There's too many ants to harvest them and I can't easily throw this container outside and encourage them to leave.

I have found and evicted 10+ ants colonies already this season. Any ideas?


r/Greenhouses 8d ago

Greenhouse base advice

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7 Upvotes

Hi everyone!

First time homeowner here so a lot of learnings are coming by doing, so I would appreciate advice from more experienced people.

We bought a wall greenhouse and the best location in terms of light is the wall in the picture. Previous owners were old so the garden, even though it's nice, is in a quite wild state. I'm going to see if some of thoses plants can be moved but we don't mind if they need to go completely.

The question is, what is the best wag to build a proper base for the greenhouse? My initial uneducated guess is to remove the plants, use sand to level it and then use similar tile/stones like the ones pictured around the plant area. Any precaution to avoid having those plants come up again and ruin the new base? Any generic advice?

The greenhouse we this one bought is for reference. It comes with a base.

Thank you very much!


r/Greenhouses 8d ago

Greenhouse Update

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14 Upvotes

Major Update!

I was so closeeee 😭 removed the last piece of glass today on this project. On the very last row I let my patience slip and yanked on a stripped bolt that was stuck, cracked the interior of a roof panel and glass started raining down. The exterior pane is still good though.

75.5 out of 76 pieces (I am sure there is a chance I will break some more in the reconstruction haha) not broken is pretty successful for someone who’s never done this before I think. 😂

Tomorrow I’ll be dissembling the frame and loading all the brackets. Ground more for reassembly is beginning next week. I appreciate all the helpful folks who commented on my original post!


r/Greenhouses 9d ago

Yardistry 8x10 from Costco - question for those who've built it!

3 Upvotes

We purchased the 8x10 Yardistry greenhouse from Costco, and are just now getting to putting it together. We're planning to put it on an exact fit wood foundation. My big question for those who have built the 2025 greenhouse - are the dimensions included in the manual the exact largest outer dimensions? Or is there some variability?

We'll be using 4x6 posts for the base, and I'm overthinking it but want to see if I should plan on the dimensions they provide as the outermost edge of our foundation, or if that should hit dead center on the 4x6, etc.

Thanks for input from those who've built this giant Ikea project 😄!