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How to trim the roots of a living stone plant (Lithops)? Just cut off the old, weak, diseased and damaged roots.
How to trim the roots of a living stone plant (Lithops): cut off the old, weak, diseased and damaged roots.
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Control Methods for Spider Mite Damage on Cherry Blossoms
How to control the damage caused by spider mites to cherry blossoms? The spider mites that harm cherry blossoms are mostly hawthorn spider mites, also known as hawthorn red spider mites. Spider mites mainly damage cherry blossom leaves. In early spring, the adults and nymphs gather on the undersides of leaves, piercing their mouthparts into the leaf tissue to suck sap, causing the damaged leaves to show chlorotic spots; in severe cases, the leaves scorch and drop early. The female adult of the hawthorn spider mite is 0.5 mm long, oval in shape, with a total of 26 setae on its back. The body is red, with winter and summer forms: the winter form is bright red with a silky sheen; the summer form is red when molting, and after feeding
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How to prevent and control the damage of Lijuan spruce tip rust to Meijing?
Meijing tip rust is a newly discovered disease on Qinghai spruce (Picea crassifolia), mainly distributed in spruce forests at altitudes of 2600-2800 m in the eastern section of the northern slope of the Qilian Mountains in western Gansu, harming Qinghai spruce. Its harmfulness is second only to Qinghai spruce needle rust, and its onset period is about one month earlier than Qinghai spruce needle rust. Symptoms: Diseased buds of spruce sprout 10-15 d earlier than healthy buds. Starting in early June, the diseased buds swell into a conical shape, peach-red in color, with densely dotted small protrusions on the surface, which are the fungal spermogonia. New leaves emerging on the tender tips are deformed,
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Differences Between Herbicide Damage and Fertilizer Damage in Azaleas and How to Tell Them Apart
When azaleas suffer herbicide damage and fertilizer damage, they share some characteristics but also differ in their manifestations. What they have in common is that both are physiological injuries, causing leaves to wither and drop within a short time, but the patches do not slowly expand, nor do pathogens appear on them. The differences between herbicide damage and fertilizer damage are as follows: when azaleas suffer herbicide damage, they show sensitivity to a certain pesticide or a certain class of pesticides. For example, after a pesticide is sprayed on the leaves, within a few days the parts of the leaves touched by the spray solution turn yellow, wither and drop, seriously affecting the plant's growth, but it will not
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What are the remedial measures after eucalyptus suffers frost damage?
Frost damage to eucalyptus mainly manifests as frozen shoot tips, and in severe cases the aboveground parts freeze to death. The severity of frost damage varies depending on the eucalyptus variety and stand age. Eucalyptus camaldulensis, Eucalyptus grandis, Eucalyptus dunnii and others are among the more cold-tolerant species in the Eucalyptus genus, while Eucalyptus urophylla, Eucalyptus grandis x urophylla and others have poor cold tolerance. The main antifreeze technical measures are: 1. Mild frost damage (tip...
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How to handle a money tree after frost damage? A few remedies to teach you
How to handle frost damage on a money tree
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What are the remedies for osmanthus trees after frost damage
What should you do if an osmanthus tree is frostbitten? What methods can save it? For osmanthus planted in the open ground, the lowest temperature it can tolerate in the north is -5°C to -8°C. Beyond this limit, osmanthus will suffer frost damage to varying degrees. Therefore, when planting osmanthus in the open ground in the north, you should choose a sunny, wind-sheltered spot and add artificial winter protection...
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Is your tobacco suffering from pesticide damage? Teach you a quick way to identify it
What should you pay attention to when growing tobacco? Tobacco plants are tall with dense leaves and have a high water requirement during their growth period. However, too much or too little water is harmful to growth. Hunan has abundant rainfall, but it is unevenly distributed. During the rosette to rapid growth stage, tobacco leaves have a high water requirement, but rainfall during this period tends to be excessive, and flash floods often occur. Therefore, ...
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