I just found some seeds I would like to germinate
My greenhouse gets to 100 on sunny days , do you think it would bee too hot for the seeds?
Should I do them inside the house instead then move them out when I see leaves?

Depends on what kind of seeds they are.

dianthus , milkweed , flowering tobacco , balsam

I don't think any of these need a cold period.

gardengus said:dianthus , milkweed , flowering tobacco , balsam

I don't think any of these need a cold period.

True, but all germinate at about 75F soil temp - impatiens (balsam) and nicotiana (flowering tobacco) need to be on soil surface. High temps could cook seeds (I've done it).

T'were me, I'd start them indoors.

I think I'd just do these outside now, in late-day shade. Perhaps cover the flats (or whatever) with some kind of permeable fabric for protection from critters, a possible hard shower, or drying winds.

I've been using Tulle and it's worked just great.

I think 100° is too hot, too. I'd also just plant them outside.

Karen

And I'd just about bet that GH gets hotter than 100. I left a plastic clock in mine one summer and it melted! I've had to open mine up even in the winter on really sunny days.

Ok outside it will be , thanks all for the input

and I should have said 100+ I'm sure it gets hotter too , my thermometer only goes to 120 and I have seen it pegged

I cover the top of mine with a tarp at this time of year, allowing any extra to drape down a bit on the south and west sides, and tie it down all around - this way, it's still possible to store materials and pot up stuff in it. Otherwise, it's too hot to even step inside for something I need. Mostly shaded, it also works pretty well for starting soft-stem cuttings.

I purchased a shade cloth last year, but never put it on , I think I will give it a try this year.

So how does one go about putting a shade cloth on a GH? Mine is a lot taller than I am, and I just don't DO ladders!

Ladders.

I'm dangerous with ladders, too.

Fold it so it's easy to flip over - then toss it up there. Flip, shimmy and slide it into position - then tie it down. I have to move the ladder about a dozen times.

Without a ladder ?? I guess you'd have to toss it up in a high wind and hope for the best , sounds even more frustrating, however.

I have been known to tie rocks to lightweight things to throw them.....

My greenhouse is a tiny little thing and my guys are 6'5'' so no problem , the tying it down will probably be staples and landscape timbers.

I have issues with rocks near the greenhouse

Hi Cinda, Chelle, Woofie, Karen, et al -- I also have seeds that I'm starting now (or soon) for fall crops and so on (cabbage and brussel sprouts, plus I'm always starting lettuce seed...), and I just start it in the house under the lights, same as in the winter; the temps are a lot more consistent and I've always had better luck this way (but of course, could just be me...). Hope everyone is having a GREAT gardening season !

I too have a small GH. Last year I put a shade cloth over the top of mine. It is soo much cooler in there. I don't do ladders either I took and rolled my shade cloth into one long roll. Then stood on the side of the GH and held the end of the 'roll' and tossed the rest up and over the top. Shimmied into place as Chelle said. I took 4 short pieces of rebar and folded it into a U shape, doubled up the end of my shade cloth and stuck the rebar through the cloth and shoved it into the ground. I did this on all 4 corners of the cloth. Has stayed in place for 1 year now and lookin good.

What do you keep in the greenhouse in the summer? if anything?