Covered Greenhouse Garden: The Oregon Trail look. Since we've moved here, we've had some windy nights and some CRAZY 30 mph windy nights. On top of that, the neighbors all comment on the foggy summers. So to help my future tomatoes out, I decided to build them a little green house to protect them from the wind and to elevate the temperature during the colder days. This should also help me with the "year round" gardening Bay Area people seem so keen on.