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USA High Tunnel for Herbaceous Perennials Growing
A high tunnel for herbaceous perennials provides cost-effective season extension on both ends of the growing calendar, protecting early spring growth from late frosts and extending fall production beyond the first killing freeze. For growers producing large volumes of native perennials and landscape plants, high tunnels allow covering more acreage at lower cost than closed greenhouses while still capturing the critical shoulder-season weeks when retail prices are highest.
Technical Specs
Ideal Temperature
50 to 75 °F
Relative Humidity
50 to 72%
Crop Cycle
45 to 90 days
Yield vs Field
1.5 to 3×
Late frost and early freeze protection
A high tunnel adds 4-6 weeks of production on each end of the outdoor season, protecting early spring growth and fall extension from the killing frosts that end open-field production.
Lower cost per acre than greenhouse
For large-volume perennial production, high tunnels cover 3-4× more acreage than greenhouses at the same budget, scaling protected production efficiently.
Natural hardening conditions
The open-ended high tunnel provides natural air exposure that partially hardens plants, reducing the acclimation step needed before retail sale or field transplanting.
Agronomist Tip
Use high tunnels for the finishing stage of perennial production rather than propagation, start cuttings or divisions in a closed greenhouse for maximum control, then move established plants to high tunnels for the final growth phase where natural conditions improve hardiness.
Other crops in High Tunnel
See all High Tunnel crops →Ready to grow Herbaceous Perennials in a high tunnel?
Our team will help you design the right structure for your farm, no cost, no commitment.