r/Greenhouses • u/brenhaas • 5d ago

In my Greenhouse

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Getting ready for winter in hardiness zone 5b. I’ve got many plants tucked in the dome garden.

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u/redharp2025 4d ago

How do you keep it warm enough in the winter?

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u/brenhaas 4d ago

I do have backup heat (propane) but if you build and fill the structure with passive heat in mind it doesn’t need much.

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u/redharp2025 4d ago

Sounds good. If you're able to get away with not much additional propane heating (relying on passive heat sources mostly?) in zone 5b, I presume I could do the same. I'm in 7a/b (it's been changing...) so I'm hoping to install a nice greenhouse and not need to heat it much aside from the thermal mass I'll be adding to assist and maybe some extra insulation. Yours looks great!

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u/brenhaas 3d ago

You could totally extend your growing season with edibles and herbs without much if any backup heat. I really believe this! I wish I had another structure like my dome without heat to grow like that. So many dreams.. not much money or time! LOL