Reasons for Yellowing Leaves on Dendrobium Orchids and How to Fix Them
1. Environmental effects
Dendrobium orchids are suited to growing in partial shade. If a Dendrobium orchid is kept in a dry environment for a long time, its leaves will easily turn yellow once exposed to strong light.
2. Seasonal changes
Weather affects the color changes of Dendrobium orchid leaves. When seasonal changes occur, increase the amount of organic fertilizer appropriately to help the plant improve its resistance.
3. Control watering
Potted Dendrobium orchids must not be watered too much, otherwise the roots will rot, so the amount of water given must be controlled in good time; if the temperature is high, the soil easily becomes dry, so water promptly to keep it moist.
Now everyone knows how to handle Dendrobium orchids after they bloom, so we should cultivate them well and not just admire their beautiful flowers.
What to Do When Dendrobium Leaves Turn Yellow: An Analysis of the Causes of Yellowing Leaves on Dendrobium Orchids
Dendrobium dislikes dryness and fears waterlogging, and especially needs plenty of water from when the new buds begin to sprout until the new roots form. But if it is too damp, and especially if it encounters low temperatures, it easily rots. On clear, dry, hot days, besides watering, spray plenty of water onto the ground to maintain high air humidity. So what should you do when Dendrobium leaves turn yellow? Below, the editor of wed114 wedding website brings you the detailed content on the causes of yellowing leaves on Dendrobium orchids.
What to Do When Dendrobium Leaves Turn Yellow
As for the growing environment of Dendrobium orchids, we know which environments suit them. Dendrobium likes damp, partially shaded environments, and wild Dendrobium orchids in particular have even higher requirements for their environment.
Solution one
Only in a damp, partially shaded environment can the aerial roots of Dendrobium orchids breathe well. If Dendrobium orchids are kept growing in an environment with high temperatures, dryness and strong direct sunlight, the leaves will easily turn yellow, so the choice of environment is crucial.
Solution two
The influence of weather and seasonal changes will affect the color changes of Dendrobium orchid leaves. When seasonal changes occur, pay attention to increasing organic fertilizer. Ensure the moisture level of the leaves and help the plant improve its resistance.
Solution three
When the leaves of a Dendrobium orchid turn yellow, you must pay close attention: if it is not dealt with in time, it will cause the whole Dendrobium orchid to dry up, so you should act reasonably and adapt to the local conditions, gradually solving the main problem of yellowing leaves on Dendrobium orchids.
The growing habits of Dendrobium orchids
They often grow on tree trunks or rocks in forests at an altitude of 480 to 1700 m. They like warm, humid and partially shaded environments and are not cold-tolerant. The optimum growing temperature is 18 to 30°C; during the growing period, 16 to 21°C is more suitable; during the dormancy period, 16 to 18°C, with a nighttime temperature of 10 to 13°C, and keeping the temperature difference at 10 to 15°C is best. Daytime temperatures above 30°C have little effect on Dendrobium growth, and the winter temperature should not be lower than 10°C. Seedlings are easily damaged by cold below 10°C.
Dendrobium dislikes dryness and fears waterlogging, and especially needs plenty of water from when the new buds begin to sprout until the new roots form. But if it is too damp, and especially if it encounters low temperatures, it easily rots. On clear, dry, hot days, besides watering, spray plenty of water onto the ground to maintain high air humidity. Evergreen Dendrobium species can be kept with plenty of water in winter, but deciduous Dendrobium species can be kept somewhat dry while maintaining high air humidity.
Dendrobium grows wild in forests, but in cultivation it is still relatively light-loving; 50% shading in summer and autumn and 30% shading in winter and spring are suitable. If the light is too strong, the stems will swell and turn yellow, and the leaves will be yellow-green. But with ample sunlight, autumn flowering is good and the number of flowers is greater.
For the soil, use well-drained, airy crushed fern roots, sphagnum moss, charcoal chips, broken tile pieces, perlite, etc., mainly crushed fern roots and sphagnum moss.
Dendrobium is the largest genus in the orchid family, including about 1500 species of plants, mainly distributed in tropical Asia and the Pacific islands. China has about 63 species of Dendrobium plants, of which 39 species are used medicinally. Domestic Dendrobium is distributed south of the Qinling Mountains and the Huai River. In terms of latitude, most species are concentrated between 15°30′ and 25°12′ north latitude, with the number of species gradually decreasing northward, and the northernmost limit not exceeding 34°24′ north latitude. Vertically, they are distributed at altitudes from 100 to 3000 m. Dendrobium plants are a group that developed from the tropical Southeast Asian center toward subtropical climatic conditions. In China, Yunnan, Guangxi, Guangdong, Guizhou and Taiwan, China are the distribution centers of this genus in the country.
Solutions for Yellowing Leaves on Dendrobium Orchids
Solutions for Yellowing Leaves on Dendrobium Orchids
As for the growing environment of Dendrobium orchids, we know which environments suit them. Dendrobium likes damp, partially shaded environments, and wild Dendrobium orchids in particular have even higher requirements for their environment.
Solution one
Only in a damp, partially shaded environment can the aerial roots of Dendrobium orchids breathe well. If Dendrobium orchids are kept growing in an environment with high temperatures, dryness and strong direct sunlight, the leaves will easily turn yellow, so the choice of environment is crucial.
Solution two
The influence of weather and seasonal changes will affect the color changes of Dendrobium orchid leaves. When seasonal changes occur, pay attention to increasing organic fertilizer. Ensure the moisture level of the leaves and help the plant improve its resistance.
Solution three
When the leaves of a Dendrobium orchid turn yellow, you must pay close attention: if it is not dealt with in time, it will cause the whole Dendrobium orchid to dry up, so you should act reasonably and adapt to the local conditions, gradually solving the main problem of yellowing leaves on Dendrobium orchids.