Exploring the root causes of diseases based on the phenomena of orchid leaves
An introduction to topics related to orchid plants, exploring the root causes of diseases based on the phenomena of orchid leaves. Below, the editor will provide a detailed explanation for you.
01. Leaf color turns yellow, growth is normal: excessive sunlight.
02. Leaf color turns yellow, new buds are small: excessive sunlight, lack of nitrogen fertilizer, or insufficient humidity.
03. Old leaves turn yellow and fall off: normal aging or improper potting.
04. Tips of new leaves are burned: excessive fertilization or medication, or unclean planting material.
05. Tips of both new and old leaves are burned: excessive humidity in the pot, rotten roots in the root system, or too few orchid roots, unqualified planting material.
06. New buds rot: unclean planting material, excessive bacteria causing bud decay.
07. Leaf has burn spots with no yellow edges: scorching caused by intense sunlight.
08. Leaf has yellow-brown spots: heat damage to the roots.
09. Leaf has spots with a water-soaked edge: excessive humidity in the pot, excessive air humidity, incomplete environmental disinfection, or leaf rot disease; poor ventilation and air circulation.
10. Leaf has irregular yellow spots, necrotic leaf tissue with indentation: viral disease also known as "Baiラス."
11. Leaf has small yellow spots: caused by scale insects or red spiders.
12. Leaf surface appears purple-black, while the back remains green: caused by low temperature frostbite, lack of phosphorus fertilizer can also occur.
13. Leaf dehydrates, pseudobulb wrinkles: caused by long-term excessive dryness and dehydration in the pot.
14. Leaf dries from the node and breaks from the node, the leaf tip is still green but dehydrated, the rhizome can sprout the following year: severe water deficiency during the growing period.
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