Diagnosis of orchid disease from orchid leaves
The root causes of the disease are:
1)Yellowish leaf color, normal growth: light is too strong.
2)Yellowing leaves, smaller buds: excessive light, lack of nitrogen and necessary humidity.
3)Old leaf yellowing and shedding: caused by normal aging or pot turning.
4)Rapid yellowing of old leaves: too much watering, improper pot turning.
5)Scorch of new leaf tip: excessive fertilization, unclean planting material.
6)New leaves and old plants are black tip coke: excessive moisture in the basin, roots have rotten roots.
7)After the new bud unearthed and stop growing: there are rotten roots or unclean things next to the new bud, open the surrounding seedlings around the new bud, remove the unclean things and resume growth.
8)There are burnt spots on the leaves, and no yellow at the periphery: scorching sun burn spots.
9)Leaf-end dip scalding shrink head: watering water temperature is too high; watering temperature is too high; summer high temperature when showering.
10)New bud rotten heart: water irrigation into the bud after the evaporation of water and absorption can not be, the pot is not clean to produce leaf rot, etc.
11)There are spots on the leaves and water-soaked edges: excessive humidity, basin humidity and air humidity produce suffocation, accompanied by leaf rot bacteria. Poor ventilation and ventilation.
12)Chloasma on the leaves: caused by heat at the roots.
13)Irregular yellow spots on the leaves, mesophyll tissue necrosis and depression: virus disease also known as "Baras" caused by.
14)Small yellow spots on the leaves: caused by beetles.
15)Purple-black leaves appear, the back of the leaves is still green: caused by low temperature frost. Phosphorus deficiency also occurs.
16)Leaf dehydration, pseudo-corm crinkle: basin caused by long-term drying dehydration.
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What kind of plants do you grow in the courtyard in the north? These are not bad.
Many people say, what kind of plants should be planted in the courtyard in the north? But the weather outside in winter is too cold, which makes many flower friends helpless. Next, let's explain what to plant.
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2018 photo taken in flowering period of Cymbidium
2018 Cymbidium flowering photo 2018 Huilan flowering photo.
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