Be aware of growth regulated plants

Wouldn't switching photoperiod have the same effects?

Not as cheaply.

In houses which total over a million sq ft under glass, what do you think? It is done with mums and poinsettia, but there are far less produced than flat packs of annuals. Also, mums and poinsettias come in as slips and most large factory greenhouse operations either grow their own or purchase plugs for annuals. Some annuals are direct seeded into flats, but that is usually limited to melons, cucumbers, and other squash.

Depends on the plant, and whether you're using natural or artificial light.

Okay, so I guess my instance which was very specific to giant greenhouse operations didn't seem to enter your mind, I'll say it again with the addition of natural light situation, huge operations under glass, shipping out tractor trailers of flats day and night, with hundreds of employees and a head house operation of three to six belts with 20-30 operators planting plugs on two shifts. It is cheaper to use growth inhibitors.

The only time artificial light is used are for very limited crops which are hugely smaller than that of annual flats production of impatiens and all the ordinary plants which people fawn all over.

No it doesn't. In a commercial environment it is always cheaper.

I'll be. This explains a growth problem I have experienced.

Thanks. I've had this problem with impatiens and thought it was something *I* was doing.

Appreciations, Charlie

And they count on that as part of their extended sales. They want people to come and buy more packs. It's such a dirty industry and I worked for one of the worst and largest of such operations before I went back into a 5,000 foot house where I transitioned them over to organic and that took three years to be certified.