Season Extension
Cold Frame
Low-profile transparent structure for hardening off and season extension
Quick Stats
Difficulty Beginner
Est. Cost $50 - $300
Lifespan 10 years
Permits Not required
Size & Materials
Size Requirements
3x6 ft typical, 12-18 inches tall
Materials Needed
Lumber frame, old windows or polycarbonate
Benefits
- Low cost
- early season starts
- winter greens
Considerations
- Limited space
- manual ventilation needed
Planning Details
Best Placement
South-facing wall, protected from wind
Climate Considerations
South-facing for maximum solar gain
Maintenance
Daily venting in spring, seasonal cleaning
Permits Required
Not required
Cost Overview
$50 - $300
Estimated range for materials and basic setup
DIY: Beginner
Lifespan: 10 years
Planning Tips
- Research local building codes and HOA restrictions before starting.
- Consider future expansion when choosing location and size.
- Factor in access for maintenance and material delivery.