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In the greenhouse at night?

Discussion in 'Indoor & Greenhouse Gardening' started by PlantNurse15, Apr 15, 2019.

  1. Apr 15, 2019
    PlantNurse15

    PlantNurse15 Chillin' In The Garden

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    Hey all,

    My greenhouse is finished which is very exciting but I am wondering if I can leave my flower seedlings in there at night? The lowest it is going to get at night in the next week is 33 degrees Fahrenheit.

    Thank you!
     
  2. Apr 15, 2019
    PhilaGardener

    PhilaGardener Deeply Rooted

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    Get some water containers in there to add thermal mass (or run a small space heater if it gets critical) and you should be fine. Congratulations on finishing it up in time for the season!
     
  3. Apr 15, 2019
    PlantNurse15

    PlantNurse15 Chillin' In The Garden

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    Thank you PhilaCardener!
     
    flowerbug likes this.
  4. Apr 15, 2019
    flowerbug

    flowerbug Garden Addicted

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    yes, thermal mass, you can also use rocks or bricks, or barrels of water. :)
     
    Carol Dee and valley ranch like this.
  5. Apr 15, 2019
    valley ranch

    valley ranch Garden Addicted

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    That's pretty cold 33 F ~ yeh containers will work if there is direct sun ```
     
    Carol Dee likes this.
  6. Apr 16, 2019 at 1:36 AM
    dickiebird

    dickiebird Garden Addicted

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    Depending on the day time temps you could possibly set new starts out there, but I wouldn't until the temp, in the greenhouse stays above 45 at night.

    THANX RICH
     
  7. Apr 18, 2019 at 2:18 AM
    SprigOfTheLivingDead

    SprigOfTheLivingDead Deeply Rooted

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    I'm with this advice. I'd be scared :( but I'm also risk adverse
     
  8. Apr 19, 2019 at 7:28 PM
    ducks4you

    ducks4you Garden Master

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    Exactly!! Horse breeders with very expensive stock heat their barns in the winter to...you guessed it, 45 degrees, constant. I have my tomato seedlings in a leaky 10 gallon fish tank, sitting on the ledge on my windowed but unheated east facing front porch. I have a heat mat underneath them. I have been unplugging and replugging it all week. This really is work, but the payoff is you haven't brought in any insects or mold from plants sold at box stores, which is where I am certain I picked up squash vine borers and squash bugs.
     

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