Exploring the root causes of diseases based on the phenomena of orchid leaves
Answering netizens' questions about the cultivation of orchid plants, exploring the root causes of diseases based on the phenomena of orchid leaves, and the following is a comprehensive introduction.
01, The leaf color turns yellow, the growth is normal: excessive sunlight.
02, The leaf color turns yellow, the new bud is small: excessive sunlight, lack of nitrogen fertilizer, or insufficient humidity.
03, The old leaves turn yellow and fall off: normal aging or improper potting.
04, The tip of the new leaf is burnt: excessive application of fertilizer or medicine, or unclean planting material.
05, Both the new and old leaves have burnt tips: excessive humidity in the pot, rotting roots in the root system, or few orchid roots, and unqualified planting material.
06, The new bud rots: unclean planting material, excessive bacteria causing bud rot.
07, There are burn spots on the leaves, with no yellow edges: scorching spots caused by intense sunlight.
08, There are yellow-brown spots on the leaves: caused by root heat.
09, There are water-soaked edges around the spots on the leaves: excessive humidity in the pot, excessive air humidity, incomplete environmental disinfection, or leaf rot disease; poor ventilation and aeration.
10, There are irregular yellow spots on the leaves, with the leaf flesh tissue necrotic and sunken: viral disease, also known as "Bai拉斯".
11, There are small yellow spots on the leaves: caused by scale insects or red spiders.
12, The leaf surface appears purple-black, while the back is still green: caused by low temperature frostbite. Phosphorus deficiency can also occur.
13, The leaves dehydrate, and the pseudobulb wrinkles: caused by long-term excessive dryness and dehydration in the pot.
14, The leaves wither from the leaf joint and break from the leaf joint, the leaf tip is still green but dehydrated, and the rhizome can sprout next year: severe water deficiency during the growing period.
The above is [] about the specific content of exploring the root causes of diseases based on the phenomena of orchid leaves, for everyone's reference and operation.