LOVE your greenhouse! What a great setup.

I think tomatoes will need additional light during the "Persephone Days" to encourage flowering and fruit production. Have you looked into additional light sources?

NIce!!! I am envious...

in Summer my GHS (8x12 homemade from old window) is way too hot for tomatoes, its a challenge in any GHS to keep the inside temps below the outside. I use Aluminet shade at 50% and that keeps things reasonable most of the time with a single circulation fan, so better for orchids than tomatoes.... Mostly I use mine for overwintering Zone10/11 tender plants and starting seeds of perennials in the Fall and Summer Annuals starting in March or so - in February I start seeds (peppers, tomatoes..) indoors under lights. My only heat in GHS is a string of lights and some heat mats.

Thanks for all the feedback.

Too much heat is my concern as well. Previously, my seedlings started in the greenhouse were weaker than those started on an uncovered patio table. Many never germinated at all.

We were somewhat successful at growing tomatoes in the GHS last year. We even had a few remaining vines from what we planted last spring. They were in a large tub, which was less than ideal. I am hoping they will do better with roomy growing beds.

I have a shade cloth up year round, but I am not sure it is 50%. I don't have a circulation fan, so that may be something I need to add. I hadn't even thought about light, it is pretty bright in there.