How can you tell which fertilizer is lacking based on the condition of the flowers?

Flower-growing experts can tell from the color of the flowers or the condition of the green leaves what is wrong with the flowers and which fertilizer they lack, because different levels of deficiency in various fertilizer nutrients cause different growth conditions in the flowers. Let's learn about it together.

1. Nitrogen deficiency in flowers stunts growth: the leaves are small and pale, sparse and prone to dropping, which affects photosynthesis, resulting in poor growth, smaller plants, fewer branches, and small, few fruits.

2. Phosphorus deficiency inhibits growth: the plants are short and small, the leaves turn dark green, dull gray with no luster, bear purple spots, and wither and drop off.

3. Potassium deficiency causes brown spots on the leaves, abnormal wrinkles, curled leaf margins, scorching, and a state that looks as if it has been burned by fire.

4. Calcium deficiency inhibits root growth: the roots are numerous but short, the cell walls become mucilaginous, and the root tip cells are damaged, leading to rot.

5. Magnesium deficiency causes chlorosis, yellowing disease and white flower disease. Flowers lacking magnesium usually begin to lose green from the lower leaves, showing yellowing, which gradually spreads to the upper leaves; at first the veins remain green, then the veins turn yellow, and soon the lower leaves turn brown until they wither and die.

6. Iron deficiency: when iron is lacking, the young leaves at the upper part of the branches are affected, while the old lower leaves remain green; with slight iron deficiency, the mesophyll tissue of the flowers is light green and the veins remain green; in severe cases, the young leaves all turn yellow-white and develop dead spots, gradually scorching and dropping off.

7. Manganese deficiency: when flowers lack manganese, the leaves first turn pale with a touch of gray, then brown spots appear at the leaf tips and gradually spread to other parts of the leaf; the leaves wither rapidly, the plants grow weak, and flowers cannot form.

8. Zinc deficiency: the auxin in the flowers is destroyed, plant growth is inhibited and disease occurs. Good zinc nutrition can enhance a plant's resistance to disease.

9. Sulfur deficiency causes chlorosis: the veins of the flowers turn yellow, but the mesophyll tissue still remains green, which can be distinguished from the symptoms of magnesium and iron deficiency. Sulfur deficiency first causes red dead spots starting from the base of the leaf; usually the top leaves of the flower plant are affected early, the leaves are firm and thick, and the branches are thin and lignified.

10. Micronutrient deficiency: the growth and development of flowers require relatively large amounts of nitrogen, phosphorus, potassium, calcium, magnesium and sulfur, and relatively small amounts of iron, manganese, zinc, copper, boron, selenium, molybdenum, etc. But a lack of micronutrients is likewise harmful to the growth and development of flowers. Therefore, micronutrient fertilizer must be applied appropriately to ensure that the flowers bloom brightly all the time.