This little construction has once again allowed me to recycle more waste materials – with pleasing results. Appearing rough and ready, the structure has surprised due to its performance during the cold winter days and frosty nights. Able to maintain a warm daytime environment, even when cloudy, I have been able to bring my tomato crop forward by about two months. Built two years ago in 2009 it has survived strong winds on plenty of occasions, giving the impression it will “hold up” for many years to come. Hothouse Design Considerations There are enough gaps at the top of the hothouse for ventilation and plenty of light is both reflected from the north-facing wall of the implement shed, as well as directly through the plastic sides. The gaps also allow small birds such as Willie Wagtails to enter when looking for insects or worms. The hothouse has made it...