During the vegetative period, nutrients are stored in plants as their roots soak up a high concentration of water and nutrients from the soil. During flowering, these carbohydrates are released as the plant sends up stalks to draw in more moisture. This prolonged soaking results in extensive loss of the plant’s water-soluble nitrogen (N) and phosphorus (P). This lost water-soluble N and P causes an imbalance of the plant’s water-binding capacity and allows excess nutrients to move out of the plant, creating the general condition of nutrient burn.
During nutrient burn, roots can be over- or under- watered, and excess N and P losses increase during flowering. Normally, healthy plants can recover most of the nutrient losses through dormant and dormant-aging (see more on that later). But if the damage is severe, root re-orientation and activation and the expression of N-P-S enzymes can result. Even a slight problem can derail a rooted plant. The plants exposed to acute nutrient deficiencies in nutrient burn are marked by a “canker-key” pattern of foliage scars, showing purple for this part of the season. Canker-keys have been described in real seedlings. The same damage is found on burned spots in mature plants, with smaller, more irregular scars on larger areas.
To learn more about nutrient burn in plants, Such as marijuana or tomatoes, Check out the prettyfrugal article about nutrient burn, what is it and how to fix it You can lower you chance of damaging your plant by using the proper nutirent, light and a really good growing tent. Check out these best indoor greenhouse, reviewed for you