Greenhouse plants

[Traveller]

We're just coming into our planting season and so the greenhouses are full of beautiful plants.
Can someone tell me how long one should wait before feeding any of these plants that are grown at the greenhouse?
I'm sure there's chemicals used and tonnes of fertilizer on them.
Thanks for reading.

 

[Crazy1]

If pestisides or fertilizers that are not organic are used you should give them a minimum of 3 months so that the chemicals can leach out of them.

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[Traveller]

Thank you I thought it would be at least that if not more.
Heading out to a greenhouse this morning that I believe
only uses natural pest control, but will ask to make sure.
For the fertilizers, would repotting the plants and leaching
work, do you think?

 

[Crazy1]

I've done that to several of my plant I still give it at least 3 months. Those chemicals are absorbed by the leaves and roots so they are (so to speak) ingested by the plant and it takes time for it to work its way out.