What to Do When Asparagus Fern Leaves Turn Yellow? Causes and Solutions for Yellow Leaves on Asparagus Fern

  Asparagus fern has a graceful form, with an elegant, staggered arrangement of slender, upright stems. It can purify the air and cultivate character, and it benefits both health and feng shui. Many plant lovers grow it at home. Recently I have seen quite a few people complaining that their asparagus fern turns yellower the longer they keep it, so today I will explain the causes of yellowing leaves on asparagus fern and how to treat the root cause, and look at what we should do about it.

  1. Too much light

  Asparagus fern likes semi-shade and dislikes strong light. Especially in summer, avoid direct sunlight, otherwise the branches and leaves will wither and turn yellow. Move the pot to a shady spot and mist the branches and leaves often to increase air humidity. Asparagus fern is a semi-shade plant, and many plant lovers think it should not be exposed to the sun at all, so they keep it in a backlit spot for a long time. This is actually a big mistake! What asparagus fern fears is strong sunlight. In summer it needs appropriate shading, but winter sunlight is not strong to begin with, and keeping asparagus fern out of the light for a long time will make the plant weak and gradually turn yellow. Therefore, in winter it is best to put asparagus fern on a sunny windowsill and let it bathe in the warm sunshine.

  2. Long-term shade

  If asparagus fern is kept in a shaded environment for a long time, the plant grows weakly and then turns yellow. If indoor light is weak, you can take the asparagus fern to a brighter spot every few days to increase photosynthesis.

  3. Improper watering

  Asparagus fern likes moisture but fears waterlogging. Keep the potting soil alternating between dry and moist; generally, watering just enough to moisten the topsoil is fine. Too much water easily causes root rot, while too little water easily dries the leaf tips. In dry seasons, spray clean water on the leaves more often. Asparagus fern likes moisture but fears waterlogging. Before watering, tap the side of the pot first. If the sound is crisp and the soil surface feels dry to the touch, then it is time to water. If the sound is dull and the soil feels moist, do not water. If the surrounding air is too dry, the leaf tips of asparagus fern will also dry out and turn yellow, so keep asparagus fern away from air conditioners and heaters, and sprinkle water on the leaves and around the pot every day to maintain air humidity.

  4. Improper fertilizing

  If a top dressing is too concentrated or unrotted fertilizer is applied, it easily causes "root burn", leading to dry, falling leaves. Conversely, if the potting soil is poor, the leaves will also turn yellow from lack of nutrients. The roots of asparagus fern are fragile, and applying unrotted or overly concentrated fertilizer easily causes "root burn", which leads to dry, yellow, falling leaves. If no fertilizer is applied for a long time and the soil is poor, the leaves of asparagus fern will also turn yellow. Therefore, asparagus fern should be given light, frequent feedings: dilute rotted organic liquid fertilizer in a 2:1000 ratio before use.

  5. Poor winter care

  Asparagus fern likes warmth and should be kept in a sunny spot in winter. If it is kept in a place without light for a long time in winter, or in poor ventilation or cold, the leaves easily wither and turn yellow. Generally, the room temperature should be no lower than 12°C, and the plant should be placed near a south-facing window with watering appropriately controlled. Asparagus fern grows best at room temperatures above 10°C; if the temperature falls below 5°C, the leaves will dry up and drop. Plant lovers can check the temperature at home. If it is below 5°C, cover the plant with a bag promptly to keep it warm. If the temperature is between 5°C and 10°C, asparagus fern basically stops growing, so reduce watering, stop fertilizing and ensure sufficient sunlight. If the temperature is above 10°C, normal care can continue.

  6. Unsuitable placement

  If asparagus fern is kept next to a heater or air conditioner for a long time, not only will the whole fronds turn yellow and drop, but the stems will also dry up. Keeping asparagus fern next to a computer or TV for a long time will also cause the leaf tips to dry up. During care, keep asparagus fern away from air conditioners, heaters, TVs and computers.

  7. Harmful gas exposure

  Asparagus fern fears smoke and dust. If it is exposed to toxic gases, the branches and leaves easily turn yellow. In addition, if the plant is too large, the pot is too small, or it is harmed by pests such as scale insects, the branches and leaves will also turn yellow, so repot and control the pests promptly.

  8. Pest and disease infection

  Once asparagus fern is infected by pests such as scale insects, the branches and leaves will also wither and turn yellow, so control them promptly. When asparagus fern is infected by pests such as scale insects, the branches and leaves easily wither and turn yellow. Plant lovers should check whether their asparagus fern has pests. If it does, dilute Jiebijiezhi in a 1:2000 ratio and spray it on the branches and leaves.

  9. Stay away from radiation

  Not only people need to stay away from radiation; asparagus fern also needs to grow away from radiation. Placing asparagus fern next to a TV or computer will make its leaves and stems dry up and turn yellow. Generally speaking, keeping asparagus fern more than 5 m away from radiation sources will greatly reduce the impact.

  Rescue care after yellowing:

  Generally speaking, once asparagus fern leaves turn yellow, it is very hard for them to turn green again. Sickly, weak branches and leaves consume the nutrients of the whole plant. In this case, you should sacrifice the few to save the whole: cut off the yellowed branches and leaves to ensure the new branches and leaves can grow healthily. Plant lovers now understand why their asparagus fern at home turns yellow, right? Hurry and cut off the yellow leaves, then care for it well. I believe it will not be long before your asparagus fern is lush and green again!

  Should yellowed asparagus fern leaves be cut off?

  Many people ask, what should be done with yellowed asparagus fern leaves? Generally, yellowed asparagus fern leaves will not turn green again. On one hand, sickly, weak leaves consume the plant's own nutrients; on the other hand, they are not attractive. So we generally recommend cutting them off, and during pruning you can combine this with shaping the plant.