You need to pay more attention to the temperature and moisture level in the containers. Park them in semi-shade, and make sure they stay moist. Apart from that, there's no difference. Most seeds don't need cold stratification, and germinate just fine with Spring, Summer and even early Fall sowing.

Is every thing done the same way? Not everybody winter sows the same way so you might have to explain your technique.

I grew a couple containers of seed last summer outside. I used milk jugs and I cut a large hole in one side of the jug for extra ventilation. I placed my containers on my north facing porch where they got just a tad of early morning sun. I had a problem keeping the Heuchera seedlings alive, but the others worked fine...Coreopsis, Scabiosa, and Lychnis.

- Brent

Hi Brent - I am just a state down below you in North Carolina and I do alot of Spring and Summer sowing. I use mostly cell packs. I still cover the seed trays till they germinate then uncover them. I use trays that will hold water and keep about 1/2" of water in them and bottom water - if the tops start to look dry I will top water also but generally the bottom watering keeps everthing moist. I also have a shade house that I keep them in. We seldom go on vacation (our back yard and gardens are our vacation) so I can keep on top of them every day plus my husband and I are retired - this is what we do 24/7. I hope that helps some.....

Lynne

Brent- whatever technique you use won't change...'style' is not as important as 'method' in this case.
As donn mentioned, the only thing you'll change is the location of the containers to part-shade, and the amount of time you're out there monitoring. Set your watch for 1/2-hour intervals ;)

Although I haven't done a LOT of spring sowing, I can tell you that the time you'll have 'covers on' will be significantly reduced. Don't want fried seedlings.

Good luck!