Tomato seeds usually germinate with their first leaves in five to 10 days. The optimal planting temperatures range between 70 and 80 degrees Fahrenheit. More leaves grow as the plant matures. Temperatures lower than 50 degrees Fahrenheit and higher than 95 degrees Fahrenheit results in poor and slower germination.
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Joyce Starr is a freelance writer from Florida and owns a landscaping company and garden center. She has published articles about camping in Florida, lawncare, gardening and writes for a local gardening newsletter. She shares her love and knowledge of the outdoors and nature through her writing.