{"product_id":"gorilla-total-vpd-control-kit-up-to-50m2-coverage","title":"Gorilla Total VPD Control Kit (Up to 50m2 coverage)","description":"\u003ch2\u003eWhat Is VPD\n\u003c\/h2\u003e\u003cp\u003eVapor Pressure Deficit (VPD) is the difference between the current amount of moisture in the air and the maximum amount of moisture the air can hold when it is fully saturated at a given temperature. This measurement is expressed in kilopascals (kPa) and reflects the dryness of the air relative to its temperature.\n\u003c\/p\u003e\u003ch3\u003eWhy Does VPD Matter?\n\u003c\/h3\u003e\u003cp\u003eVPD is a crucial factor in plant growth, as it directly influences the rate of transpiration, nutrient uptake, and overall plant health. When VPD is within the ideal range, your plants can breathe easily and absorb nutrients efficiently. \n\u003c\/p\u003e\u003cp\u003eHowever, incorrect VPD can negatively impact plant health. A VPD that is too high causes excessive water loss, leading to dehydration. Conversely, a VPD that is too low creates overly humid conditions, which can hinder the plants’ breathing, cause root rot, and encourage fungal growth.\n\u003c\/p\u003e\u003ch4\u003eThe Ideal VPD of Every Growth Stage\n\u003c\/h4\u003e\u003cp\u003eFor indoor growers, Leaf Vapor Pressure Deficit (LVPD) is more important than the room’s VPD. Due to transpiration, plant leaves are typically 3°F to 5°F cooler than the surrounding air, resulting in a slight difference between LVPD and the room’s VPD. This cooling effect, caused by foliar evaporation, makes LVPD a more accurate measure of conditions directly affecting plant growth.\n\u003c\/p\u003e\u003cp\u003eTo determine the optimal VPD, you should consider the plant’s growth stages. Here are the recommended Leaf Vapor Pressure Deficit (LVPD) levels for each stage of the plant's life cycle. Note that variations may occur between different strains.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/wdl-cdn.fra1.cdn.digitaloceanspaces.com\/app\/highlight\/img\/orig\/5ac11258.jpg\" alt=\"vpd\"\u003e\u003c\/p\u003e\n\n\n\n","brand":"Hawthorne Horticulture","offers":[{"title":"Default Title","offer_id":53060030857562,"sku":"51158","price":1200.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0835\/0200\/6618\/files\/cbaba009.jpg?v=1765456598","url":"https:\/\/hawthornehorticulture.com\/products\/gorilla-total-vpd-control-kit-up-to-50m2-coverage","provider":"Hawthorne Horticulture","version":"1.0","type":"link"}