{"id":15579,"date":"2026-01-06T16:00:10","date_gmt":"2026-01-06T21:00:10","guid":{"rendered":"https:\/\/seeds.ca\/schoolfoodgardens\/?p=15579"},"modified":"2026-01-07T15:17:01","modified_gmt":"2026-01-07T20:17:01","slug":"why-are-greenhouses-so-humid","status":"publish","type":"post","link":"https:\/\/seeds.ca\/schoolfoodgardens\/why-are-greenhouses-so-humid\/","title":{"rendered":"Why Are Greenhouses So Humid?"},"content":{"rendered":"<p>Written by: Aryan Bharucha<br \/>\nEdited by: Mannat Malhan<br \/>\nDesigned by: Nabiha Khan<\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\"><span style=\"font-size: 18pt;\">I<\/span>\u2019m sure we\u2019ve all visited a greenhouse to explore the incredible variety of plants it has to offer, and it\u2019s always a relaxing experience. Many of you may have noticed the rush of warm, moist air as you step inside. This phenomenon is not accidental; it is the result of how heat and water interact in a closed environment. Let\u2019s take a closer look at why greenhouses are so humid!<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><span style=\"font-size: 18pt;\"><img loading=\"lazy\" class=\" wp-image-15583 alignright\" src=\"https:\/\/seeds.ca\/schoolfoodgardens\/wp-content\/uploads\/2026\/01\/greenhouses-1-300x200.png\" alt=\"\" width=\"410\" height=\"273\" srcset=\"https:\/\/seeds.ca\/schoolfoodgardens\/wp-content\/uploads\/2026\/01\/greenhouses-1-300x200.png 300w, https:\/\/seeds.ca\/schoolfoodgardens\/wp-content\/uploads\/2026\/01\/greenhouses-1-510x341.png 510w, https:\/\/seeds.ca\/schoolfoodgardens\/wp-content\/uploads\/2026\/01\/greenhouses-1.png 512w\" sizes=\"(max-width: 410px) 100vw, 410px\" \/><\/span><\/span><\/p>\n<p><span style=\"font-weight: 400;\">Greenhouses tend to be humid due to heat and moisture being trapped inside. The air becomes moist as plants continue to release water into the air, while the sunlight from the sun heats the inside of the greenhouse. The exterior portion of greenhouses is usually made from glass or plastic, through which sunlight can easily pass, and heats the plants and soil inside. The warmth these surfaces give off is called infrared radiation, which has a hard time passing back out through glass or plastic. This process is known as the greenhouse effect, and is the reason why they remain warm and moist.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><strong>The Greenhouse Effect<\/strong><\/p>\n<p><span style=\"font-weight: 400;\">The greenhouse effect is a natural process that keeps the Earth warm by trapping sunlight in the atmosphere. Greenhouse gases like carbon dioxide and methane act like a blanket, preventing heat from escaping. However, an excess of these gases is causing the Earth to become much warmer than it should be, leading to global warming.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\"><img loading=\"lazy\" class=\"alignnone  wp-image-15581\" src=\"https:\/\/seeds.ca\/schoolfoodgardens\/wp-content\/uploads\/2026\/01\/greenhouses-2-1-300x160.png\" alt=\"\" width=\"546\" height=\"291\" srcset=\"https:\/\/seeds.ca\/schoolfoodgardens\/wp-content\/uploads\/2026\/01\/greenhouses-2-1-300x160.png 300w, https:\/\/seeds.ca\/schoolfoodgardens\/wp-content\/uploads\/2026\/01\/greenhouses-2-1.png 320w\" sizes=\"(max-width: 546px) 100vw, 546px\" \/><\/span><\/p>\n<p>&nbsp;<\/p>\n<p><strong>How Greenhouses Work During The Winter<\/strong><\/p>\n<p><span style=\"font-weight: 400;\"><img loading=\"lazy\" class=\" wp-image-15582 alignleft\" src=\"https:\/\/seeds.ca\/schoolfoodgardens\/wp-content\/uploads\/2026\/01\/greenhouses-3-300x169.png\" alt=\"\" width=\"440\" height=\"248\" srcset=\"https:\/\/seeds.ca\/schoolfoodgardens\/wp-content\/uploads\/2026\/01\/greenhouses-3-300x169.png 300w, https:\/\/seeds.ca\/schoolfoodgardens\/wp-content\/uploads\/2026\/01\/greenhouses-3-510x288.png 510w, https:\/\/seeds.ca\/schoolfoodgardens\/wp-content\/uploads\/2026\/01\/greenhouses-3.png 512w\" sizes=\"(max-width: 440px) 100vw, 440px\" \/>In Canada, temperatures can drop to -30\u00b0C, which raises the question of how greenhouses manage to keep their plants warm and cozy during the harsh winter months. While it is true that heat is often trapped inside, the main reason these greenhouses stay warm is that sunlight continues to enter through the glass. Even when the sun may not be visible, it can still provide warmth. Additionally, insulation and heaters are effective methods for maintaining a warm environment, allowing the plants to thrive.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">In conclusion, plants thrive in greenhouses due to trapped heat and ideal conditions. It provides a VIP experience for them day and night, thanks to Earth&#8217;s natural phenomena!<\/span><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><b>Bibliography<\/b><\/p>\n<p><i><span style=\"font-weight: 400;\">Works Cited<\/span><\/i><\/p>\n<p><span style=\"font-weight: 400;\">Managing Humidity in the Greenhouse. (n.d.). Greenhouse Product News. <\/span><a href=\"https:\/\/gpnmag.com\/article\/managing-humidity-in-the-greenhouse\/\"><span style=\"font-weight: 400;\">https:\/\/gpnmag.com\/article\/managing-humidity-in-the-greenhouse\/<\/span><\/a><span style=\"font-weight: 400;\">.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Means, T., &amp; Lallanilla, M. (2021, June 9). Greenhouse Gases: Causes, Sources and Environmental Effects. Live Science; Live Science. <\/span><a href=\"https:\/\/www.livescience.com\/37821-greenhouse-gases.html\"><span style=\"font-weight: 400;\">https:\/\/www.livescience.com\/37821-greenhouse-gases.html<\/span><\/a><span style=\"font-weight: 400;\">.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Hansen, P. (2024, January 24). How Do Greenhouses Work In The Winter? Backyard Discovery Canada. <\/span><a href=\"https:\/\/www.backyarddiscovery.ca\/blogs\/news\/how-do-greenhouses-work-in-the-winter?srsltid=AfmBOooXuYtByw8rThHWrQ5LTTl6YW_aknlX8uZud-_dj2uUyK7UwlRq\"><span style=\"font-weight: 400;\">https:\/\/www.backyarddiscovery.ca\/blogs\/news\/how-do-greenhouses-work-in-the-winter?srsltid=AfmBOooXuYtByw8rThHWrQ5LTTl6YW_aknlX8uZud-_dj2uUyK7UwlRq<\/span><\/a><span style=\"font-weight: 400;\">.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Image Credit<\/span><\/p>\n<p><span style=\"font-weight: 400;\">How to reduce humidity in a greenhouse. (n.d.). <\/span><a href=\"https:\/\/zipgrow.com\/how-to-reduce-humidity-in-a-greenhouse\/?srsltid=AfmBOop6fFqY3BAP5GH0b8TEpByqAQ8Fp0BGLv9NeIXo9HylkB_s_HFg\"><span style=\"font-weight: 400;\">https:\/\/zipgrow.com\/how-to-reduce-humidity-in-a-greenhouse\/?srsltid=AfmBOop6fFqY3BAP5GH0b8TEpByqAQ8Fp0BGLv9NeIXo9HylkB_s_HFg<\/span><\/a><span style=\"font-weight: 400;\">.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Climate Change. (2024). <\/span><a href=\"https:\/\/www.epa.gov\/system\/files\/documents\/2024-09\/climate_indicators_2024.pdf\"><span style=\"font-weight: 400;\">https:\/\/www.epa.gov\/system\/files\/documents\/2024-09\/climate_indicators_2024.pdf<\/span><\/a><span style=\"font-weight: 400;\">.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Tatiana Grozetskaya. (n.d.). <\/span><a href=\"http:\/\/shutterstock.com\"><span style=\"font-weight: 400;\">Shutterstock.com<\/span><\/a><span style=\"font-weight: 400;\">.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">GIE Media Horticulture Group. (n.d). <\/span><a href=\"https:\/\/www.greenhousemag.com\/author\/giemediahorticulturegroup\/\"><span style=\"font-weight: 400;\">https:\/\/www.greenhousemag.com\/author\/giemediahorticulturegroup\/<\/span><\/a><span style=\"font-weight: 400;\">.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>I\u2019m sure we\u2019ve all visited a greenhouse to explore the incredible variety of plants it has to offer, and it\u2019s always a relaxing experience. Many of you may have noticed the rush of warm, moist air as you step inside. This phenomenon is not accidental; it is the result of how heat and water interact in a closed environment. Let\u2019s take a closer look at why greenhouses are so humid!<\/p>\n","protected":false},"author":1,"featured_media":15580,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"om_disable_all_campaigns":false,"_mi_skip_tracking":false},"categories":[25],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/seeds.ca\/schoolfoodgardens\/wp-json\/wp\/v2\/posts\/15579"}],"collection":[{"href":"https:\/\/seeds.ca\/schoolfoodgardens\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/seeds.ca\/schoolfoodgardens\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/seeds.ca\/schoolfoodgardens\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/seeds.ca\/schoolfoodgardens\/wp-json\/wp\/v2\/comments?post=15579"}],"version-history":[{"count":3,"href":"https:\/\/seeds.ca\/schoolfoodgardens\/wp-json\/wp\/v2\/posts\/15579\/revisions"}],"predecessor-version":[{"id":15586,"href":"https:\/\/seeds.ca\/schoolfoodgardens\/wp-json\/wp\/v2\/posts\/15579\/revisions\/15586"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/seeds.ca\/schoolfoodgardens\/wp-json\/wp\/v2\/media\/15580"}],"wp:attachment":[{"href":"https:\/\/seeds.ca\/schoolfoodgardens\/wp-json\/wp\/v2\/media?parent=15579"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/seeds.ca\/schoolfoodgardens\/wp-json\/wp\/v2\/categories?post=15579"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/seeds.ca\/schoolfoodgardens\/wp-json\/wp\/v2\/tags?post=15579"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}