Causes and treatments of yellow leaves of calendula

Causes and treatments of yellow leaves of calendula

1. Improper fertilization

1. Reason: If no fertilizer is applied or insufficient fertilizer is applied for a long time during the growth period, yellow leaves will occur. When too much fertilizer is applied, it will be difficult for marigolds to absorb the excess fertilizer, which will cause root burns and affect the absorption of water and nutrients.

2. Treatment method: Fertilize once a week in summer, and avoid excessive fertilizer. If you apply too much fertilizer, you can water more to dilute the fertilizer in the soil. Lack of fertilizer will cause the soil to become compacted. Fertilizer should be applied immediately. The effect will be seen within a week. Fertilizer should be applied on schedule thereafter to ensure the normal growth of the flowers.

2. Pest and disease damage

1. Reason: The yellowing of calendula leaves is often caused by mosaic disease, and the leaves will turn yellow and have yellow-green spots.

2. Treatment method: Pay attention to timely prevention of diseases, increase fertilizer and water management, spray pesticides in time and provide sufficient light and ventilation.

3. Plants lack water

1. Reason: Calendula needs sufficient water during its growth period. If it is not watered for a long time or is watered too little, the plant will lack water, causing the leaves to droop and turn yellow.

2. Treatment method: At this time, spray water on the leaves immediately, and then water the pot. Pay attention to gradual watering and do not water too much at one time.

<<:  Causes and treatments for yellow leaves of goldfish spider plants

>>:  Reasons why cyclamen leaves turn yellow, first aid for yellowing leaves

Recommend

When is the best time to plant cabbage sprouts?

There are quite rich varieties of vegetables in C...

How to eat wax apple

1. Direct consumption 1. Wash the wax apple with ...

Characteristics of Kalanchoe

1. Appearance characteristics 1. Plant shape: The...

Medicinal value of Scutellaria barbata

For snake and insect bites You can take fresh pro...

What fertilizer should be used for potted golden diamond

1. Fertilizer selection Sufficient base fertilize...

How to grow Phalaenopsis at home? What to do if the flower stems do not grow

1. How to raise Phalaenopsis at home 1. Potting s...

Pest control methods for oleander

1. aphid Harm: Adult aphids gather on the tender ...

How to plant Bletilla striata and how much does it cost per pound

1. Cultivation Methods 1. Seed planting: You need...

How to eat Cistanche deserticola

1. How to eat 1. Soak in water and drink: Soaking...

Where is wood fragrance suitable for planting?

Wood fragrance planting area Costusroot is mostly...

Is Jade Plant Suitable for Deep or Shallow Pots?

Is Jade Plant Suitable for Deep or Shallow Pots? ...

Can grapefruit be potted?

Can grapefruit be potted? Pomelo can be planted i...