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Thu, May 29, 08 at 12:40
| My Dahlias are in an unheated greenhouse. Do I need to harden them off before planting outside? Temps can get down to 35 in the greenhouse at night and I keep it at 90 degrees during the day. I didn't harden them off last year but I'd like to make sure. I have 175 in pots with pro-mix. Most are ready to go into the ground. TIA!
GreenhouseChik |
Follow-Up Postings:
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| Hardening off involves not only the temperature, but also and primarily the degree of radiation from the sun. Yours will probably harden off faster than those started indoors, but I think that the glass in greenhouses also diminishes the amount of radiation the plants receive indoors. If I were in your shoes, I would harden them off for a few days in filtered light outside. I had almost as many pots are you have so I know the anguish of moving them all. Fortunately, I think we are over the risk of frost here in Southern Ontario, but I will still be watching with care. John |
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