{"id":2149,"date":"2025-05-12T13:26:08","date_gmt":"2025-05-12T11:26:08","guid":{"rendered":"https:\/\/dryrocket.com\/2025\/05\/12\/vpd-explained-how-vpd-helps-you-dry-perfectly\/"},"modified":"2025-09-05T11:57:32","modified_gmt":"2025-09-05T09:57:32","slug":"vpd","status":"publish","type":"post","link":"https:\/\/dryrocket.com\/en\/2025\/05\/12\/vpd\/","title":{"rendered":"VPD explained: How VPD helps you dry perfectly"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"2149\" class=\"elementor elementor-2149 elementor-2094\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2a7c530 e-con-full e-flex e-con e-parent\" data-id=\"2a7c530\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b92b311 elementor-widget elementor-widget-image\" data-id=\"b92b311\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/dryrocket.com\/wp-content\/uploads\/2025\/05\/VPD-by-DryRocket-scaled.webp\" title=\"VPD-by-DryRocket\" alt=\"VPD-by-DryRocket\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bbe5b99 e-flex e-con-boxed e-con e-parent\" data-id=\"bbe5b99\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e48ea72 elementor-widget elementor-widget-spacer\" data-id=\"e48ea72\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-89e38b3 elementor-widget elementor-widget-heading\" data-id=\"89e38b3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How VPD helps you dry cannabis<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-aae475e elementor-widget elementor-widget-text-editor\" data-id=\"aae475e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>When it comes to drying cannabis, many people first think of temperature and humidity &#8211; of course, both are important. But their interaction is crucial. This is exactly what the Vapor Pressure Deficit (VPD) describes. It is therefore a real game changer for the quality and aroma of your flowers.   <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6bc2222 elementor-widget elementor-widget-heading\" data-id=\"6bc2222\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">What is perfect drying? <\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5590753 elementor-widget elementor-widget-text-editor\" data-id=\"5590753\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Perfect drying means preserving the valuable, volatile components of your flower &#8211; such as terpenes and cannabinoids &#8211; in the best possible way. To achieve this, it is essential to leave the cell structure of the plant intact. Removing water too quickly during drying leads to the collapse of these cell walls, resulting in a loss of aromas and quality in the flower. This is precisely where VPD-controlled drying comes in.   <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-be6bee0 elementor-widget elementor-widget-heading\" data-id=\"be6bee0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">VPD explained: What is behind the VPD principle?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c117856 elementor-widget elementor-widget-text-editor\" data-id=\"c117856\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>VPD stands for &#8220;vapor pressure deficit&#8221;. It describes the difference between the moisture in the plant and the air. If this difference is optimal, transpiration functions ideally.  <\/p><p>\ud83d\udc49 <strong>Is the VPD too low?<\/strong> Then the air is too saturated with moisture &#8211; the plant can only evaporate a small amount of water. The water remains in the flowers &#8211; a risk for mold. <\/p><p>\ud83d\udc49 <strong>Is the VPD too high?<\/strong> Then the air &#8220;sucks&#8221; water from the plant too quickly. The result: cell collapse, external shrinkage and structural instability of the flower. The broken cell structure causes the aroma to evaporate and with it the potency of your flower  <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0cb5ba6 elementor-widget elementor-widget-image\" data-id=\"0cb5ba6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/dryrocket.com\/wp-content\/uploads\/2025\/05\/VPD-Tabelle-1.jpg\" title=\"VPD-Tabelle\" alt=\"VPD-Tabelle\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f368abc elementor-widget elementor-widget-heading\" data-id=\"f368abc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">\ud83d\udcca VPD vs. humidity - why 60% alone is not enough<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2937e12 elementor-widget elementor-widget-text-editor\" data-id=\"2937e12\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Many growers focus primarily on the relative humidity &#8211; but without reference to temperature, this value is not as constant as you might think. This is because drying at 60% and 16 \u00b0C is much gentler than at 60% and 22 \u00b0C. Only the VPD shows the real drying speed.  <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-31ff5af elementor-widget elementor-widget-heading\" data-id=\"31ff5af\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">\ud83c\udf13 Attention: VPD changes with temperature changes <\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8dbec53 elementor-widget elementor-widget-text-editor\" data-id=\"8dbec53\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li><strong>During the day:<\/strong> Grow room usually slightly warmer \u279d VPD increases (at constant humidity)<\/li><li><strong>At night:<\/strong> grow room cools down \u279d VPD decreases (at constant humidity)<\/li><\/ul><p>\ud83d\udc49 You should therefore keep an eye on the 24-hour climate. Especially at night, there is an increased risk of mold if the VPD is too low. <\/p><p> <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4ad9fed elementor-widget elementor-widget-heading\" data-id=\"4ad9fed\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">The optimal VPD for cannabis drying<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8fe795d elementor-widget elementor-widget-text-editor\" data-id=\"8fe795d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The optimum VPD for drying is between 0.8 and 1.0 kPa &#8211; in this range:<\/p><ul><li>the plant material loses moisture evenly,<\/li><li>terpenes are largely preserved,<\/li><li>the risk of mold is significantly reduced.<\/li><\/ul><p><strong>\ud83d\udca1 Rule of thumb: As quickly as necessary, but as gently as possible.<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3480966 elementor-widget elementor-widget-heading\" data-id=\"3480966\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Conclusion: VPD = your new best friend<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-558fbe4 elementor-widget elementor-widget-text-editor\" data-id=\"558fbe4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>With VPD, you can precisely control the drying climate &#8211; independently of generalized RH values. The result: better quality, more intense aroma and reliable mold prevention. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1ea7ee8 e-flex e-con-boxed e-con e-parent\" data-id=\"1ea7ee8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fac8a58 elementor-widget elementor-widget-spacer\" data-id=\"fac8a58\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4f4b79d elementor-post-navigation-borders-yes elementor-widget elementor-widget-post-navigation\" data-id=\"4f4b79d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"post-navigation.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-post-navigation\" role=\"navigation\" aria-label=\"Post Navigation\">\n\t\t\t<div class=\"elementor-post-navigation__prev elementor-post-navigation__link\">\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-post-navigation__separator-wrapper\">\n\t\t\t\t\t<div class=\"elementor-post-navigation__separator\"><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<div class=\"elementor-post-navigation__next elementor-post-navigation__link\">\n\t\t\t\t<a href=\"https:\/\/dryrocket.com\/en\/2025\/05\/12\/terpene-saturation-in-the-air-the-invisible-influence-on-aroma-and-quality\/\" rel=\"next\"><span class=\"elementor-post-navigation__link__next\"><span class=\"post-navigation__next--label\">Next<\/span><span class=\"post-navigation__next--title\">Terpene Saturation in the Air: The Invisible Influence on Aroma and Quality<\/span><\/span><span class=\"post-navigation__arrow-wrapper post-navigation__arrow-next\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-right\" viewBox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><span class=\"elementor-screen-only\">Next<\/span><\/span><\/a>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>How VPD helps you dry cannabis When it comes to drying cannabis, many people first think of temperature and humidity &#8211; of course, both are important. But their interaction is crucial. This is exactly what the Vapor Pressure Deficit (VPD) describes. It is therefore a real game changer for the quality and aroma of your [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2580,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2149","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>VPD explained: How VPD helps you drying cannabis<\/title>\n<meta name=\"description\" content=\"The VPD (Vapor Pressure Deficit) is the key to perfect cannabis drying: optimal climate, terpene preservation and protection against mould.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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