Greenhouse humidity control

The internet shows lots of ways to build small greenhouses, but little info on heating and humidity control. I built a 8x16 and want info on humidity control. I’m using radiate , oil , electrical heat that works very well ! Any help would be appreciated! Thanks

  7 answers
  • Landsharkinnc Landsharkinnc on Jan 12, 2018
    two things to consider -- your grow zone and what you are attempting to grow -- some plants need LOTS of humidity, others don't -- ventilation with a kitchen or bath exhaust fan or one that automatically comes on at a preset temperature/humidity level -- check the internet for Greenhouse Ventilation Fans Automatic -- might have something for you

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    • Landsharkinnc Landsharkinnc on Jan 13, 2018
      reduce ventilation, and out 5 gal ( or smaller works too ) buckets of water around --if you have a way to heat the water that would help --- but just having open containers of water will help

  • Mogie Mogie on Jan 12, 2018
    You also need to consider something like a box fan to keep the air circulating. A oil filled portable heater would work well. Just make sure it is the type that turns off if it tips over. If you could find a portable heater that has a therostat so it only kicks on when the temp dips below a certain temp that would be even better.

  • Ken Ken on Jan 12, 2018
    If you are looking for a plug-in solution, you are correct. There is none available. I found a lot of sites that talk about practical steps for humidity control. All sound like they need a lot of active participation. You didn't mention if the humidity is too low, too high, or what your goal is compared with where you are. May be possible to find a semi-automatic solution if there is one issue that you are trying to solve.

  • Mogie Mogie on Jan 12, 2018
    If you want to make it more humid consider a homemade misting system. You can put very tiny holes in a hose and run that. Just turn it on and let it run the amount of time it runs depends on how much humidity you want. Had a friend in Texas who used that method in his greenhouse.

  • Gail Gail on Jan 14, 2018
    You can add gentle heat & moisture to the greenhouse by using a "vaporizer", which creates steam. Steam is created by evaporating water using heat. Place vaporizer on floor/ground for most effectiveness as heat rises & will gently heat the air from floor to ceiling. These units are not expensive & do double duty adding moisture & heat to air at same time.

  • Comas Comas on Jan 14, 2018
    Very good ! Thanks ! CA.