Unheated greenhouse

[Stoney Meadow Maple]

I decided to scrap the 3 greenhouses I received and buy a new one. My wife and i have been discussing when to get started with it, we are in zone 5a/4b want to avoid plants being ready too soon and or freezing in the greenhouse, i am thinking starting seeds mid April, but maybe that is too soon?
any opinions?

 

[Brooks_]

This may help. Click your zone under the map.
https://www.ufseeds.com/planting-schedules.html

 

[Yardmom]

I start mine in March but only bring them to the green house on warm days. Do you usually still have frost in May? You want to start seeds 8+ weeks before last frost.

 

[Yardmom]

I just look at the map that was posted. It has either changed since I had looked at it or this is a different one. It puts me in zone 6 so we would plant earlier than you would.

 

[Stoney Meadow Maple]

I start mine in March but only bring them to the green house on warm days. Do you usually still have frost in May? You want to start seeds 8+ weeks before last frost.

I dont figure we are out of the woods until about Memorial Day. We went camping (at high altitude) 2 Memorial Day weekends ago, trees weren't leaved out and it w as snowing. Just rain where we live 30 minutes away but it gives you an idea

 

[21hens-incharge]

I also start seeds indoors then use my greenhouse more as a hardening off location.

Interesting thing last year though. I had heat loving peppers in there during a cool outside/warm in the greenhouse day. I thought the forecast was ok so left them in overnight. We had 6" of snow that night. While a bit droopy they all were ok.

If you don't count it safe to plant in the ground until late May I think mid April for most things and early April for things that take a long time to grow much is a good plan.