Juliana greenhouses are great if you have a small are to devote to gardening. A Juliana greenhouse is possible to move, and works well. You can find a range of Juliana garden green houses such as Juliana vinyl garden greenhouses as well as Juliana fiberglass garden greenhouses in large as well as small sizes. A portable Juliana garden house would be ideal if you have an interest in gardening, but you don't want to lay out any large amounts on your hobby. Garden green houses can be found in many different materials, sizes and designs, so no matter what type of outdoor structure you're looking for, you're sure to find something interesting. 
Juliana Mini 2 Greenhouse
"These small, lean-to greenhouses offer the same features that the larger greenhouses do. They are designed for customers with limited garden space, who want to grow only a few plants or carry plants through the winter. Polycarbonate panels fit inside of the greenhouse for a strong and clean design. The Mini 2 is constructed of an aluminum frame and 4mm twin-wall polycarbonate. It is 2'2"W x 4'3""L x 6'5"H in the back, with a front height of 5'3". Each unit includes a sliding door and a roof vent for ventilation." 
Juliana Premium 8.3 Cold Weather Greenhouse with Heater, Base Kit, and Vent Openers
"Everything about the premium series greenhouse model is premium ! Our Semi-Pro greenhouse is a beautiful addition to your yard and garden.The extra strength profiles used in the Juliana Premium make this the strongest hobby greenhouse on the market. The extra thick 10mm polycarbonate is perfect for the northern climates providing additional protection from the cooler temperatures and elements. Sit and relax surrounded by your plants, in a warm environment despite the cold outside."
These greenhouses can be found at amazon.com
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