Rooted Agritourism

Heated High Tunnel Lessons: What I Learned My First Year Growing Flowers in Zone 4B

June 1, 2026·13 min
Episode Description from the Publisher

TakeawaysHeated high tunnels create more control, but they also create new management challengesCrop planning and data tracking made recovering from crop losses much easierOverwintering flowers may be the key to earlier blooms and higher profitabilitySummary of the EpisodeThis week, Dr. Liz Fiedler Mergen shares a transparent look at her first year operating a heated high tunnel in Zone 4B Minnesota. From grant funding and installation costs to propane failures and frozen crops, this episode dives deep into what worked, what failed, and what changes are coming next season.If you've considered adding season extension infrastructure to your flower farm or agritourism business, this episode offers practical lessons about costs, crop selection, risk management, and scaling production.Key Topics Covered:Heated vs unheated high tunnelsHow NRCS grants work for high tunnel fundingHidden costs of greenhouse and tunnel infrastructureCrop losses caused by heating failuresOverwintering ranunculus and cool flowers in Zone 4BPlanning earlier blooms for Mother's Day salesScaling flower production strategicallyManaging inventory and storage for wedding flowersSave $25 on your CoolBot: https://storeitcold.referralrock.com/lv1/6R543BWF/Podcast Website: https://www.sunnymarymeadowcoaching.com/rootedagritourismPodcast Instagram: https://www.instagram.com/rootedagritourism/Business Coaching: https://www.sunnymarymeadowcoaching.com/Farm Website: www.sunnymarymeadow.comFarmerstoFlorists: https://www.farmerstoflorists.com/Farm Instagram: https://www.instagram.com/sunnymarymeadow/Podcast Facebook group: https://www.facebook.com/groups/888196709178852

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