Zone 3: Greenhouse Upgrades | Boosting Heat Retention & Efficiency

Struggling to keep your Zone 3 greenhouse warm during some of the colder months? In this video, I reveal the latest changes I've made to my small hobby greenhouse to drastically 🤞 improve its heat retention and efficiency!

Discover practical, affordable tips for:
♨️ Harnessing Thermal Mass: Learn how I plan to use simple, low-cost thermal mass solutions to store daytime heat and release it at night, stabilizing temperatures.
🧱 DIY Insulation Techniques: See my methods for insulating the greenhouse structure and creating a smaller, easier-to-heat space for the coldest parts of the year.
☀️ Maximizing Solar Gain: I explain why I switched from opaque to clear twinwall polycarbonate panels and how this increases vital heat gain from the winter sun.
🧊 Year-Round Climate Control: Learn how this change also means I'll be using shade cloth in the summer to prevent overheating, making my greenhouse a versatile an indispensible garden tool.

These modifications are perfect for northern gardeners in cold climates who want to extend their growing season and protect their plants from cold. Whether you have a small hobby greenhouse, a mini greenhouse, or a cold frame, these principles ma help you create a more resilient and productive growing environment.

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