Planting Tips

Chapter 51 What are the common physiological diseases of flowers?How to prevent and control common physiological diseases of flowers

There are the following types.

(1) The branches are slender and long, the internodes are long, the leaves are thin, and the color is light green, which is caused by insufficient light.The daylight hours should be increased or the light source should be moved closer.

(2) The leaves of the plant are curled and yellow-edged, and the new leaves are not large, which is caused by too much light.It should be properly shaded or the light source should be moved far away.

(3) The leaves shrink and the lower leaves of the plant fall off, which is the cause of water shortage.It should be watered in time, and the water should be sufficient each time. Do not water halfway, and make the pot soil moist.

(4) The branches and leaves are wilting, the color becomes dark and gradually rots, which is caused by excessive watering.The amount of watering and the frequency of watering should be properly controlled, especially during the dormant period of the plants.Always check the drain holes in the basin for clogging.

(5) The leaves are wrinkled and yellowish-brown, which is caused by insufficient humidity.In addition to spraying more leaf water, you should also sprinkle more water on the ground around the potted flowers.

(6) The leaves turn yellow, curl, and wither, which is caused by excessive temperature.The flowerpot should be moved to a cool and ventilated place, or watered or sprayed more.

(7) Yellowish-brown spots appear on the leaves, and the leaf tips and leaf margins are withered and yellow, which is the result of sunburn.Should be properly shaded to prevent direct sunlight.

(8) The plants have few buds, no flowering and only long branches and leaves, which is caused by excessive nitrogen fertilizer.Nitrogen fertilizers should be reduced, especially during the budding period, avoid using nitrogen fertilizers, and apply more phosphorus and potassium fertilizers.

(9) The new leaves and stems are not long, the lower leaves of the plant are drooping, and the leaf color is pale, which is the reason for the lack of fertilizer.The amount and frequency of fertilization should be increased during the growing season.

(10) There are white crystals on the surface of the pot soil and the edge of the flower pot, and the leaves of the plants are shrunken, rotten, and fall off, which is caused by excessive application of chemical fertilizers.You can water to dissolve the white crystals first, and after half an hour, water a lot to get rid of the excessively concentrated fertilizer.

(11) The basin is full of exposed fibrous roots, and the drainage holes at the bottom of the basin also have fibrous roots drilled out.After watering, the leaves are easy to wilt, and the new leaves are few and small, which is caused by not changing the pot for many years or the flower pot is too small.Change to a larger pot immediately.

(End of this chapter)