This is a public-interest archive. Personal data is pseudonymized and retained under GDPR Article 89.

Re: Seeds Under Lights Versus Greenhouse

You wrote: 
>
>I am new at starting seeds, and have used lights over the past couple 
of
>winters.  Here in Ontario, January days are short.  I always thought
>that leaving the lights on for 16 hours would be preferable to a
>greenhouse, making the plants believe we were having longer days than 
we
>really would be during the winter.
>
>But recently I had a conversation with a man who grows plants for the
>main street of our town, and he mentioned that a greenhouse is
>preferable to lights, and that many plants grow better in a greenhouse
>than under lights.  His comment was "impatiens will do ok under 
lights,
>but that's about it".
>
>Does anyone care to comment on this?  If it is true that some plants
>respond better to greenhouse conditions, and others to lights, does
>anyone have lists of which plants prefer which, and which plants don't
>care?
>
>Would really appreciate some direction on this subject.
>
>Thanks in advance,
>Heather in Markham, Ontario
>Cda Zone 6 / USDA Zone 5
>
>
Heather, 

    I don't have a greenhouse, but I wish I did! My plants accelerate 
dramatically once they move from grow lights to sunlight. The natural 
light is clearly more powerful than grow lights; plants have to be 
introduced to sunlight gradually.
    I've seen greenhouses outfitted with grow lights--best of both 
worlds?

Janet
Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index