The high tunnel is in full swing. We've had mostly successes, but a few fails as well. Those, primarily due to the fact that I started planting in there 3-4 weeks late. I fully expected this to be a learning process. My 1st lesson was temperature regulation. If the sun is out, the tunnel HAS to be opened up. Even if it's just the window on cooler days. It can be 45 degrees out, but on a sunny day it will feel like a sauna in there! But, then if freezing temps are expected, we can't forget to close it up again in the evening. I'm pretty sure that's how I lost the 1st broccoli seedlings I put in.
We've been eating several varieties of lettuce for over a month, as well as spinach, snow peas & now broccoli.
My wife has very limited taste in veggies, so my main goal in building the tunnel is to be able to harvest a handful of crops as early & late in the season as possible. Primarily broccoli & a few leafy greens she'll eat.
I forgot to mention in my first post that there will be a center beam and a couple of support posts to hold the beam up in the winter months. Those pvc hoops will collapse under a moderate snow load. The beam & posts will be removed every spring. The main reason I went with the dimensions I did was so I could stand upright in it, & I'm 6'4"+. It's 12' x 18' & 6'6" high.
Thank you all for the kind words & the friendly advice