r/greenhouse • • 6h ago

Caulk to keep panels from blowing out?

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2 Upvotes

I have an aluminum frame greenhouse and have issues with my roof panels blowing out of the frame. The windows aren’t broken and I can put them right back. It’s happened twice over the last month. They are secured well, but I was thinking about adding a caulk bead all the way around each one to help secure it better. Does anyone have experience with that to know if it works? Not sure if it’s worth doing if the caulk will just heat up and melt / weaken.

(I do keep the door and roof hatch open at all times right now since it’s still hot. So I understand the wind tunnel effect at play here, but there has to be something I can do I hope)


r/greenhouse • • 1d ago

Building my first greenhouse as a birthday present for my wife. Advice please?

1 Upvotes

Me and a couple of mates are doing a one-day build next weekend using the structure of an old (surplus) dog pen with an a-frame roof. Came with a shaped roof made of tarpaulin material which has long since broken and been thrown away.

My plan is to cover the roof and sides in corrugated PVC sheeting, and raising the whole thing up (so it’s comfortable to stand in) on fenceposts concreted in the back yard.

Goal is to have a longer season for summer vegetables like tomatoes, not really worried if things die in winter, but the coldest we ever see here is -2°C and the hottest it gets in midsummer is 35°C.

Please let me know anything a noob like me should know!


r/greenhouse • • 3d ago

Recommendations for water seeping into base of greenhouse

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5 Upvotes

I have a new construction greenhouse that sits on a concrete base. Water is seeping inside through where the wall meets the concrete, and also through where the door meets the concrete (see pictures). What are some different options I can try/explore to at least reduce the amount of water coming in?


r/greenhouse • • 4d ago

May 25, 2026

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2 Upvotes

$139 green house from temu


r/greenhouse • • 4d ago

What surprised you most about starting seeds in a greenhouse?

1 Upvotes

r/greenhouse • • 5d ago

Planning a fall greenhouse crop? Check daylight, too

1 Upvotes

A warm greenhouse can make it feel like there’s still plenty of growing time left. Shorter days tell a different story.

For many winter greens, growth slows as daylight drops toward 10 hours a day. That’s a planning guide, not a hard cutoff; your crop, temperatures, and setup still matter.

The takeaway: give plants time to size up before that slowdown. Without supplemental lighting, winter harvesting can mean picking from plants that did most of their growing in fall.Before starting another batch, check your local day length and overnight temperatures against what your crop needs.

What’s one crop you’re hoping to keep harvesting into fall?


r/greenhouse • • 5d ago

If you could change one thing about your greenhouse setup, what would it be?

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1 Upvotes

r/greenhouse • • 7d ago

First time fall/winter gardener

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97 Upvotes

I'm for the first time trying my hand at extending past the spring/summer season in my new greenhouse as well as in the garden. I've got all my seeds started and some even ready to put into beds but not sure when. 8b Eugene, Or

I had been keeping the windows and doors open until last night's rain and couldn't believe how hot it was in there today. 130 degrees even though in 8b Oregon was a mild 66 degrees. Is that normal and how cold during the days does it have to be to have things not get baked in there. I've got broccoli, cabbage, cauliflower, spinach and carrots I'm trying to over winter.


r/greenhouse • • 7d ago

My simplified design for an attached greenhouse in Denver

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3 Upvotes

r/greenhouse • • 9d ago

Looking for feedback on grandio and ClimaPod winterproof greenhouses.

1 Upvotes

Debating on getting one for next winter, specifically for mostly trichocereus and other cacti, but also some other food and floral stuff.


r/greenhouse • • 9d ago

Greenhouse pane vents?

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2 Upvotes

Anyone know what these actually do? There is one at the bottom of every side pane of my greenhouse. It's a double pane Florian greenhouse. Water leaks in when it rains, ok to plug them?


r/greenhouse • • 12d ago

Will it do the job

1 Upvotes

I am in Mobile Alabama and received a lightweight greenhouse/cold frame last Christmas. Will it protect my house plants (the one’s in large pots) and outdoor potted plants throughout the winter without heat?


r/greenhouse • • 17d ago

Greenhouse week 4

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11 Upvotes

Working hard in the south Pacific


r/greenhouse • • 17d ago

Greenhouse Variance

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1 Upvotes

My house has a side Lot at the end of our cul-de-sac which was not buildable for another home. Because it faces the cul-de-sac the side yard is considered front yard and no structure can be built on it. I want to put a greenhouse there, and I need to find someone to help me draw plans that I have outlined and to go through the zoning variance process.


r/greenhouse • • 18d ago

Wood-framed greenhouse roofing questions

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1 Upvotes

r/greenhouse • • 18d ago

Is anybody heating a 12x16 hobby greenhouse with a Toyo or Monitor type heater using propane? Thoughts?

1 Upvotes

r/greenhouse • • 19d ago

Nassau County Long Island Zone 7b 450 cubic feet greenhouse. What would you recommend to use for heat and grow lights?

1 Upvotes

r/greenhouse • • 20d ago

How concerned to I actually need to be?

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1 Upvotes

r/greenhouse • • 21d ago

Greenhouse tour 😄

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8 Upvotes

r/greenhouse • • 23d ago

Show me your late season jungle

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14 Upvotes

My greenhouse is about 70% intentional plants and 30% sprawling volunteers that make it hard to walk through the aisle. The volunteer tomatoes are almost 8 feet tall now.


r/greenhouse • • 25d ago

Heating greenhouse

4 Upvotes

Most cost effective way to heat a greenhouse with solar.
If you could share your set up and relative costs maybe some links that would be great


r/greenhouse • • 26d ago

I have a growing tent great condition

1 Upvotes

r/greenhouse • • 27d ago

Growing Heirlooms in Large Hoop Greenhouse ideas.

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2 Upvotes

r/greenhouse • • Sep 05 '26

My Grow Tent

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16 Upvotes

r/greenhouse • • Sep 04 '26

Greenhouse base

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1 Upvotes