Solar, unheated and portable walk-in greenhouse for winter vegetable gardening

This portable greenhouse is available from Home Depot for $89 and has excellent reviews (it costs $200 from the manufacturer's website, ShelterLogic 6 ft. x 5 ft. Polyethylene Organic Growers Greenhouse). The store showroom unit had concrete blocks at the base ($1.49 each) to prevent from being blown away with strong winds. A indoor-approved heater may be needed during the winter (mostly at night).



The greenhouse features a mesh fabric cover, steel frame, fasteners and 4 earth anchors. Adjustable vents on all sides permit ventilation. There are a zippered screens and side panels with screens to keep bugs out.

The polyethylene fabric cover is designed to disperse sunlight for optimal plant growth.





Features of the greenhouse:

- 238 cu. ft. storage capacity
- 1-piece cover slips over frame
- 3/8 in. steel frame
- Adjustable vents deliver ventilation on all sides
- Half-moon zippered screens and rollup side panels with full-length screens keep bugs out
- Blocks harmful UVA and UVB rays
- Treated inside and outside with fade blockers, anti-aging, anti-yellowing and anti-microbial agents
- Includes 5 ft. x 6 ft. x 6 ft. 6 in. frame, 1-piece fitted cover, bungee fasteners and four 15 in. ShelterAuger earth anchors
- Complete hardware kit and step-by-step instructions (a PDF manual is available from the manufacturer website)

MFG Brand Name : ShelterLogic, MFG Model # : 70635, MFG Part # : 70635

A slightly bigger, and much more expensive, version is also available from Home Depot and Amazon: GrowIt Organic Growers 6 ft. x 8 ft. x 6 ft. 6 in. Peak-Style Greenhouse-70615.0 at The Home Depot - http://goo.gl/mDwMT

How to make a small greenhouse out of five pieces of plastic pipe, a plastic painter's drop cloth, some zip ties and a few bricks: DIY Instant Greenhouse For Under $20 - YouTube http://bit.ly/19m4jHf



Successful Gardener - Solar Greenhouse - YouTube - http://goo.gl/4TAEJ:



Cool-season Crops - WSU - Organic Farm http://goo.gl/cU1pI

Hardy
Asparagus
Broad Bean
Broccoli
Brussels sprouts
Cabbage
Chive
Collards
Garlic
Asparagus
Horseradish
Kale
Kohlrabi
Leek
Mustard
Onion
Parsley
Pea
Radish
Rhubarb
Spinach
Turnip
Parsnip
Potato
Salsify

Half-hardy
Beet
Carrot
Cauliflower
Celery
Chard
Chicory
Chinese cabbage
Globe artichoke
Endive
Lettuce

References:

6 ft. x 5 ft. Polyethylene Organic Growers Greenhouse-70635 at The Home Depot
GrowIt Organic Growers 6 ft. x 8 ft. x 6 ft. 6 in. Peak-Style Greenhouse-70615.0 at The Home Depot - http://goo.gl/mDwMT
ShelterLogic Grow-It Greenhouses (manuals can be downloaded from the website) http://goo.gl/2V0Iz
How to build My 50 Dollar Greenhouse » The Door Garden http://goo.gl/H14V
6 Months In the Greenhouse » The Door Garden http://goo.gl/oeIaa
Vegetables: growing in your greenhouse / Royal Horticultural Society http://goo.gl/qDaqU
Living Off the Land in Maine, Even in Winter - NYTimes http://goo.gl/OKqpS
Growing in a Small-Scale Greenhouse - Urban Farm magazine http://goo.gl/ZdT9D
Vegetables in Winter http://goo.gl/RLIqC
Why purchase a Green House? Growing Food in a Greenhouse - YouTube http://bit.ly/UBowaG
Harbor Freight Tool Visit and 6x8 and 10x12 Greenhouse Updates - YouTube http://bit.ly/UBozmT

Here are some options for heaters: