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Is it OK to repurpose plastic glasses as seedling containers for the mid-phase between initial development in trays, and final planting in the garden?

(I am going to make holes with a cigarette at the bottom of the each glass; this is the cheapest solution that I know)

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The glasses are available in sizes 200-500 ml.

EDIT: I read (see, for example, this question and this question) that light affects microlife in soil, and even that root can think it is a branch (!), so transparent or semi-transparent glasses would be in that sense unsuitable, but I hope, since this is only temporary, this won't have significant impact.

VividD
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1 Answers1

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Yes, it's ok to use them, and you can also make smaller holes with a hot metalic nail that you can hold with pliers. Just don't forget to trim the roots of the seedlings you are transplanting in plastic cups, especially if you have tomatoes. If the seedlings have a tap root, try to place them vertically.

And try to fill the cups with soil as much as you can, because rims may cast a shadow and lead to etiolation. If the soil becomes more compact after a week, push upwards the bottom of the cup in its center in order to raise the soil level, even if the plastic bottom becomes wrinkled.

Alina
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