How many lumens needed for seed starting?

Based

1. 1. A minimum of 2000 Lumens is recommended for seed starting, with options available for lights with 5000 Lumens or higher using white LEDs.
   Source: The Rusted Garden

2. 2. For faster seedling growth, using 20,000 Lumens per lamp and 7100 lumens per square foot of growing space is suggested.

Source: Riley's Garden

     3.  Vegetable seedlings and other "full sun" plants typically require about 2000 to 3000 lumens per square foot of growing space.

Source: Homestead and Chill

1. 4. A good grow light for indoor growing should provide at least 50–75 lumens per square foot for seedlings and young plants.
   Source: Botanical LEDs 

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3. 5.The high range of lumens per square foot can go up to 7,000, with 10,000 lumens being suitable for a few square feet of growing area.
   Source: Quora

In conclusion, the lumens needed for seed starting can range from 2000 to 3000 lumens per square foot for most plants, with higher lumens recommended for faster growth and better results. It is essential to consider the specific requirements of the plants being grown and adjust the lighting accordingly for optimal growth.