What are the reasons for yellowing leaves on pot marigold?

  When pot marigold leaves turn yellow, people often think it is disease pathogens at work, but in fact this is only one reason; improper watering, fertilizing and lighting can all cause yellow leaves. So what exactly causes yellowing leaves on pot marigold? Let us take a look below at the reasons for yellowing leaves on pot marigold.

  [Big flowers, small pot]

  Some pot marigold varieties have larger flowers and more roots, and need more water and nutrients; a small pot cannot meet their growth needs, and at this point the old leaves turn dry and yellow with no luster, while the new leaves are thin and weak. The pot should be changed every few decades, and 30% humus soil should be added to the soil to ensure normal flower growth.

  [Lack of water]

  Reduced watering will cause the plant's leaves to droop; at this point spray water on the leaves immediately, then water the pot, paying attention to proceeding gradually and not watering too much at once.

  When the weather is dry and indoor humidity is low, yellow leaves can also appear. This is especially severe in areas where coal fires or heating are used indoors in winter. At this point, frequently spray and wash the branches and leaves with water at a temperature close to room temperature to increase air humidity. In summer, frequently sprinkle water on the ground to make the local environment humid.

  [Improper fertilizing]

  During the growth period of pot marigold, not fertilizing for a long time or insufficient fertilizing will cause yellow leaves. When too much fertilizer is applied, the flower finds it hard to absorb the excess fertilizer, which can burn the roots and affect the absorption of water and nutrients.

  In summer, fertilize once a week, and by all means avoid applying too much fertilizer. If too much fertilizer is applied, water more to dilute the fertilizer in the soil. When fertilizer is lacking, the soil will become compacted; fertilize immediately, and results will be seen within a week, after which fertilize on schedule so the flower grows normally.

  [Cold damage]

  If pot marigold is moved outdoors too early and is hit by cold wind, or is not moved indoors in time during cold autumn weather, the flower is damaged by freezing and yellow leaves result. Therefore, do a good job of cold protection in early spring and late autumn.

  [Pests and diseases]

  Yellowing leaves on pot marigold are often caused by mosaic virus disease; when the leaves turn yellow, yellow-green mottled spots also appear, so pay attention to preventing the disease in time, spray medicine promptly and provide sufficient light and ventilation.

  The benefits and effects of pot marigold:

  The benefits and effects of pot marigold are two different meanings; pot marigold, also known as calendula, is a plant of the genus Calendula in the Asteraceae family. The pot marigold plant is dwarf, with dense flowers, brilliant and eye-catching flower colors, and a long flowering period; it is the most common herbaceous flower in gardens and cities in early spring.