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+--- Thread: Greenhouse Runs In Spring (/showthread.php?tid=1089)
Greenhouse Runs In Spring - justicebzwiegandjlz832 - 09-03-2026
An unheated greenhouse or polytunnel lets autos go out a month earlier than open ground, and the extra warmth alone can cut a week off finish time. Humidity builds up fast in a closed tunnel though, so ventilation in the last three weeks is what keeps the dense buds from rotting. Layouts and spacing for tunnel grows are covered on https://turboautoflowerseeds.com, along with which strains handled the temperature swings without stalling. Three harvests a season is realistic under plastic at mid latitudes.