Maintaining proper ventilation is key to the success of greenhouse plants. It helps regulate temperature, provide fresh air for photosynthesis, discourage pests, and encourage pollination. Johnny’s offers greenhouse vents and openers that automatically open in response to temperature increases, so your plants stay in their comfort zone. Choose from models designed for greenhouse and cold frame applications.
Keep your cold frame plants in their "comfort zone."
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Keep your plants in their "comfort zone".
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