My first gardens were in northern California. Before then, I had been
assigned/granted various tasks in a family garden. In northern Cal, I cleared ground and set off on my own.
This was so very near the coast that I could see salt water from my front yard (Humboldt Bay

). The backyard had been a
tangled mess and required cleaning out blackberry vines that continued into neighboring property over the back fence and to the west that I couldn't do anything about. Once eliminated where I could, the ground was in fairly good condition for annual vegetables.
The weather was a tough situation. Growing Season warmth accumulates to almost exactly the same numbers as here, about 800 miles to the north and 2,000 feet higher in elevation. That is a seasonal and professional rating by meteorologists using horticultural standards for growing temperatures.
The limitations had to do with that great expanse of Pacific Ocean and the cloudy conditions. A gardening example: completely outside any danger of frost, growing 1 crop of Golden Bantam sweetcorn required an entire season. In contrast to here, with a much shorter growing season, some gardeners, in some years, plant sweetcorn as often as 4 times over 6 weeks at the start of the season.
Something like broccoli grew just fine there, just a stone's throw from the Pacific. It is interesting that the meteorologists consider the entire California coast as having a Mediterranean climate and extending that classification all the way up into central Washington State. Dry Summers are apparently the most important factor and I'm inclined to agree with them. Cold Winters creates a
boundary before coming to where I now live but for annual vegetables, the dry summertime weather is every bit as dominant as in the California Central Valley, especially in the northern part.
Tossing in a Mount Shasta and the Sierras and we are next door

. Your plants are under a greenhouse? I am sure that they will need the warmth. You make it sound as though the greenhouse is portable. Is that so?
Steve, a
neighbor
Steve