Super Green Thumb
Posts: 2437
Joined: Mon Nov 15, 2010 10:31 pm
Location: Latrobe Pa.

Are black seed boxes best to start seeds.

I noticed that most seed trays are black. Is there a reason for that? Does the black plastic absorb the heat in the greenhouse better!
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Super Green Thumb
Posts: 2097
Joined: Fri Jul 25, 2008 7:27 pm
Location: Mid Ohio

No practical reason. The soil mix is dark so that masks any color of the plastic. Larger containers (gallon pots on up) are a diffent matter in that the sun can hit the sides and warm them up, but they are often grown outside by nurseries.

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