Identification and Control Methods for Scale Insect Pests on Maidenhair Fern
1. Cause One: Delayed Pruning
When dead leaves are found on maidenhair fern during care, they should be removed promptly to keep the plant fresh and attractive and to encourage new leaf growth. Otherwise, the branches and leaves will become too messy and crowded, leading to weakened growth and yellowing, withered leaves.
Solution: When the leaf clusters of maidenhair fern become too dense, the old leaves can be pruned appropriately each autumn.
2. Cause Two: Unsuitable Potting Soil
Maidenhair fern needs repotting every spring. It prefers loose, well-drained, fertile calcareous sandy loam. Attention must be paid to soil selection when repotting. If the soil is unsuitable, the leaves of maidenhair fern are prone to turning yellow, withering and dropping.
Solution: Maidenhair fern likes calcium fertilizer. When dividing and repotting, a small amount of lime and crushed eggshells can be added to the pot to supplement calcium fertilizer.
3. Cause Three: Improper Watering
During the growing period, maidenhair fern needs sufficient watering and high air humidity to maintain dark green leaf color. If water supply is insufficient or the air is dry, its leaves will turn yellow or wither.
Solution: During the peak growing season, maidenhair fern needs to be sprayed with water on the branches and leaves 2-3 times a day.
4. Cause Four: Improper Lighting
Maidenhair fern is a shade-loving plant. Direct strong sunlight can easily cause scorched leaf edges and yellowed, withered leaves.
Solution: When cultivated outdoors, maidenhair fern needs shading, but it also needs sufficient sunlight. Indoors, it is best to place the pot on a windowsill facing east or north.
Like other aspects, pests and diseases also have a major impact on the ornamental value and normal growth of maidenhair fern. Below is an introduction to the symptoms and control methods of its common pests and diseases.
How to Control Pests and Diseases of Maidenhair Fern, Control Methods for Maidenhair Fern Pests and Diseases
The flower language of maidenhair fern is "no regrets." Because its stems are slender and dark in color, people also call maidenhair fern "the maiden's black hair." It is like a maiden without regrets, waiting quietly. However, during cultivation, some problems that affect its appearance always arise. So how do you control pests and diseases of maidenhair fern? Below is an introduction to the control methods for maidenhair fern pests and diseases.
How to Control Pests and Diseases of Maidenhair Fern, Control Methods for Maidenhair Fern Pests and Diseases
1. Scale insects are a common pest. They are prone to occur in warm, humid environments with poor ventilation.
Control method: Bury 3% carbofuran granules or 15% aldicarb granules in the substrate around the roots. Generally, for a pot with a mouth about 2u cm in size, applying 2-5 grams is sufficient. Alternatively, during the nymph stage, spray with a 1000-fold dilution of 40% omethoate emulsifiable concentrate. For other methods, refer to the section on pest and disease control for cycads.
2. Leaf blight mainly damages the leaves and is a common disease.
Control method: Appropriately reduce air humidity and pay attention to ventilation and light transmission. At the early stage of the disease, spray with 200-fold Bordeaux mixture, or 500-600-fold dilution of 50% carbendazim wettable powder, once every 10 days, for 2-3 consecutive sprays.
Common Pests and Diseases of Maidenhair Fern and Their Control Methods
Maidenhair Fern Pest - Scale Insects
Symptoms
Scale insects are a common pest of maidenhair fern, and they are extremely likely to occur in warm, humid conditions with poor ventilation. When affected, white bumps can be seen on the leaves; the leaves will droop and wither, and in severe cases the entire leaf turns scorched yellow.
Control Methods
Maidenhair fern has many leaves, making it very difficult to inspect every leaf for scale insects. Therefore, when scale insects are found, directly cut off the affected leaves.
For chemical control, insecticide (available at flower and bird markets) can be applied to the soil around the roots. Usually, for a 10-15 cm pot, applying 2-5 grams is sufficient. Alternatively, when affected, spray with a 1000-fold solution of omethoate emulsifiable concentrate, once every 5-7 days, for 2-3 consecutive sprays.
Maidenhair Fern Disease - Leaf Blight
Symptoms
During care, yellowing leaves and scorched edges often occur. If improper care is ruled out, then it is caused by a fungal infection leading to leaf yellowing. When affected, yellow-brown lesions appear on the leaves. As the lesions expand, they gradually merge, and the leaves then wilt.
Control Methods
Strengthen care. If yellow-brown spots appear on the leaves, appropriately reduce air humidity and pay attention to ventilation and light transmission.
When affected, spray chemicals promptly. Bordeaux mixture or carbendazim wettable powder can be used, sprayed once every 10 days, for 2-3 consecutive sprays to improve the condition.