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Growing Zones in Colorado

Growing Guide for Fruits and Vegetables

Colorado has as many as nine climate zones for planting, both hotter & dryer and colder & more humid, depending on elevations above sea level. The higher the growing zone number is, the longer the growing season is and more varieties of plants can be grown.  To see which crops are suitable for your zone and dates to sow or plant by, click on the link and enter your City in Colorado or Zip Code for spring and fall planting options.

Remember to check seed packets for recommended planting zones. Hybrid and heirloom seeds of the same vegetable or fruit can have different days to maturity and even growing zones. Because greenhouses draw more heat earlier and later in the year than growing in ground without one, there is some flexibility to planting dates. 

Growing Challenges in Colorado

Crop Eating Animals:

Our Solutions: Critter exclusion

23 gauge, ¼” hardware cloth
19 gauge, 1” vinyl coated hex mesh

High Winds / Extreme Weather:

Our Solutions: Strong tie-downs, connectors & structural components

We use ratchet straps that have a working load limit of 3333 lbs / strap and a breaking strength of 10,000 lbs / strap. A 70-mph ind produces a force of 12.5 lbs/sf, which produces a total force on our 12’ x 20’ model’s surface area of 4583 lbs. We use 3 lengths of straps on this model, as pictured above, meaning the cover alone has a working load limit of 10,000 lbs with a breaking strength of 30,000 lbs. Overkill? We’re guilty.

Intense Heat and Sun

Our Solution: Adjustable low tech UV protected cover system for ventilation

Shade cloth blocks out mid-day hot sun

Low tech roll-up roll-down assembly provides more than adequate ventilation for cooling

Drip systems are easily integrated into raised beds, while mesh covers allow rain to add natural nutrients to the soil and plant roots

Colorado Soil

Colorado has a variety of soils, ranging from clay which is elastic and holds water to sandy soil which lacks organic matter and does not hold water to red silt, which is very common in the State.  To ensure success with growing plants and crops, soils may need to be amended and balanced with the right texture and by adding nutrients to ensure growth and allow water and air to reach roots properly. Raised beds help control the quality of amended soil for season after season. To have your soil tested, go to this link:

Our Solution: Structurally integrated container gardening system

Raised beds not only help control the quality of the soil; they also support the structure of the greenhouse so there is no digging or concrete involved, while lending long term stability.

Gardening Comfort / Colorado Demographics

Colorado’s total population is just under 5,500,000 and is the second fastest growing state in the U.S.  People from age 50 on up comprise roughly 33.3% of the population in Colorado. Retirees have more time to garden but are physically limited as they get older. Up and down movements required when sowing seeds and weeding, squatting, and reaching while planting and harvesting all take a physical toll on the body that may discourage this activity.

Our Solution: An outdoor living space built for gardening & comfort

Simple! Benches on top of the raised beds for potting and entertaining.