![]() ![]() Nitrogen, manganese, or zinc deficiency: Yellowing on older or inner leaves first, spreading out to outer or younger leaves.Iron deficiency: Yellowing young leaves, working inward to older leaves.Here’s how to tell which nutrient is causing the yellowing leaves: Likewise, lack of manganese or zinc can cause chlorosis. However, if your soil has adequate nitrogen, but your soil pH is too low (in alkaline soils) or too high (like in a bog), then that nitrogen won’t be available for the plant to use.Īnother common nutrient deficiency that causes chlorosis is lack of iron. Is 40 Degrees At Night Too Cold For Tomatoes?įor example, nitrogen deficiency commonly causes yellow seedlings & plants. Soil pH that’s too high or too low can prevent nutrients from being available to plants. ![]() pests & disease Yellow seedlings caused by nutrient deficiency.damaged roots (which can be caused by soil being too wet).poor soil drainage (i.e., soil too wet).When seedlings turn yellow–whether it’s your cherished tomato seedlings, or any plant–yellowing leaves is called chlorosis.Ĭhlorosis is a general term–kind of a catch-all word, that simply means the plant is yellowed abnormally.Ĭhlorosis is a symptom of a lack of chlorophyll, the pigment that plants use to capture & use sunlight to turn water & air into carbohydrates.Ĭhlorosis, or yellow leaves, can be caused by a number of things: Observation of the specific symptoms & condition of the plant & its soil can often clue you in on the most likely cause–and steer you toward the appropriate fix. While it’s troubling when seedlings & plants turn yellow, there are a couple common causes, along with a handful of less-typical causes. Yellowing in seedlings & plants–called chlorosis–can also be caused by other factors, such as damaged roots, compacted soil, incorrect soil pH, other nutrient deficiencies, or pests & disease. The most common reasons seedlings turn yellow are root damage from wet soil &/or nitrogen deficiency. So what causes it, and how can you fix it? But it’s easy to get worried when seedlings turn yellow. Those little seedlings hold the possibility of a productive garden bursting with fresh vegetables, tomatoes, or maybe a flower garden. Starting seedlings–whether during spring or any time of year–is exciting. ![]()
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