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Thu, Jan 19, 12 at 9:31
| I planted some petunia seeds 3 days ago and they're already up using a heating mat. Unbelievable. Now, they are growing under fluorescent lights - once they have germinated (even though the leaves are tiny), do I discontinue the heat mat? The room temperature is approximately 70*. |
Follow-Up Postings:
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| Soil heat is used only for germination. Once the seeds germinate the warmed soil can quickly cook the tiny seedlings, especially roots. For growing-on cooler air temperatures are recommended. 60-65 degrees is recommended. Dave |
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