262.490.4464 // 373 Cascadilla St, Crested Butte, CO

BUILD. SOW. GROW. is a design and build company dedicated to using innovative building techniques to construct superior greenhouses that provide a versatile living space for both flora and people.

These highly efficient and healthy greenhouses are created by incorporating progressive building techniques such as:


Passive solar design is a design technique that maximizes solar heat gained through the southern windows and retains the radiation with thermal mass.

Passive Solar Design Info


A clay straw wall system uses deconstructed straw bales tumbled with a clay-slurry and packed into forms to create a structural  wall.

Clay Straw Wall Info


A climate battery is a Subterranean Heating and Cooling System that moves air underground to help maintain a stable temperature.

Climate Battery Info

A BUILD. SOW. GROW. greenhouse is more than just a growing space for plants. It will be your ‘Botanical Oasis’ – a place to relax and connect with the plant world during all four seasons.

Oases examples: Spa space, yoga platform, sleeping loft, office space, reading retreat and meditation room

Flourishing Flora: Veggie and flower production, dwarf food forest, seed start space, Aquaponics and vermicomposting

Below is a list of services offered by BUILD. SOW. GROW.

  • Design of Greenhouse Structures
  • Construction of Greenhouse Structures
  • Greenhouse Mechanical Systems Integration
    • Hydroponics Systems
    • Aquaponics Systems (Growing Fish and Plants)
    • Climate Battery (Using the Ground for Heat Transfer)
  • Greenhouse Plant Selection and Layout
  • Exterior Garden Design, Layout and Planting
  • Interior and Exterior Garden Maintenance

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Kara Holzmiller is a Wisconsin native with an Environmental Science degree from the University of Minnesota. Further education includes Permaculture Design Certification (Loveland, CO) and completion of the Endeavour Sustainable New Construction Program (Peterborough, ON Canada). During Kara’s extensive travels throughout the US and Central America, she has been involved with various internships, WWOOFing (World Wide Opportunities on Organic Farms) and volunteer experiences through which she acquired valuable work and education experience within environmentally conscious agricultural and construction settings.

Build.Sow.Grow was founded on Kara’s two passions; her desire to design and build the most healthy, low impact, efficient living spaces and the production of nutritious food grown locally through all seasons.


Kara Holzmiller - Owner of BUILD. SOW. GROW.

Kara Holzmiller

Owner of Build. Sow. Grow.



373 Cascadilla Street,
Crested Butte, CO 81224
(Crested Butte South)

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