I have 2 questions regarding polytunnels:
1. I have planted some spinach, carrots, lettuce seeds, and some onion small heads (no idea what the official name is) in a plastic poly tunnel (https://goo.gl/jqlIwv) a month ago. Onions and spinach have all germinated and are growing quite well although slowly. What I wanted to ask is how often should I water these vegetables during this season? it has been raining quite a lot lately and if I dig a bit the land is still moist. I am just not sure how should I go about watering (how often) during late winter/early spring in a polytunnel?
2. How often should I leave the door open during cold days (0-8 celcisus)? I am mostly leaving it closed but there a lot of water droplets in the polytunnel "roof". I am not sure if that is having a bad effect on vegetable growth.
Any advice will be highly valuable.