What to Do When Asparagus Fern Leaves Turn Yellow? Teach You the Correct Way to Handle It

Analysis of the Yellowing Leaves of Asparagus Fern, Sun Exposure. Asparagus fern is a semi-shade plant. Many gardening enthusiasts think asparagus fern is not suited to sunlight, so they keep it in a shaded spot for a long time, which is actually a big mistake! Asparagus fern has a graceful form, well-arranged and slender yet upright, and it can purify the air and cultivate the mind, benefiting both health and feng shui, so many gardening enthusiasts grow it at home. But once winter comes, the asparagus fern at home turns yellow, so what exactly should be done?

Analysis of the Yellowing Leaves of Asparagus Fern

1. Sun Exposure

Asparagus fern is a semi-shade plant. Many gardening enthusiasts think asparagus fern is not suited to sunlight, so they keep it in a shaded spot for a long time, which is actually a big mistake!

What asparagus fern fears is strong sunlight. In summer it needs appropriate shading, but in winter the sunlight is not strong to begin with, and keeping asparagus fern away from sunlight for a long time will make the plant weak and gradually turn yellow.

Therefore, in winter it is best to place the asparagus fern on a sunny windowsill and let it bathe in the warm sunlight.

2. Watering

Asparagus fern likes moisture but fears waterlogging. Before watering, tap the pot of the asparagus fern. If the sound is crisp and the soil surface you touch with your hand has become dry, only then should you water the asparagus fern. If the sound is dull and the soil you touch is moist, do not water the asparagus fern.

If the surrounding air is too dry, the tips of the asparagus fern leaves will also dry up and turn yellow, so the asparagus fern should be kept away from air conditioners and heaters, and water should be sprinkled on the leaves and around the pot every day to maintain air humidity.

3. Fertilizing

The roots of asparagus fern are fragile. Applying undecomposed fertilizer or fertilizer that is too concentrated easily causes "root burn", which leads to dry, yellow leaves and leaf drop.

If no fertilizer is applied for a long time and the soil is poor, the asparagus fern leaves will also turn yellow. Therefore, asparagus fern should be given light fertilizer frequently, using decomposed organic liquid fertilizer diluted at a ratio of 2:1000.

4. Radiation

Not only do people need to stay away from radiation, the growth of asparagus fern also needs to stay 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.

5. Temperature

Asparagus fern grows best at room temperature above 10°C. If the temperature is below 5°C, the leaves will dry up and drop.

Gardening enthusiasts can check the temperature at home. If the temperature is below 5°C, promptly cover the plant with a bag to keep it warm.

If the temperature is between 5°C and 10°C, the asparagus fern basically stops growing at this time, so watering should be reduced, no fertilizer should be applied, and sufficient sunlight should be ensured. If the temperature is above 10°C, normal care can be given.

6. Pests and Diseases

When asparagus fern is infested by pests such as scale insects, its branches and leaves easily wither and turn yellow. Gardening enthusiasts should check whether the asparagus fern at home has pests. If so, dilute Jiebijiezhi at a ratio of 1:2000 and spray it on the branches and leaves of the asparagus fern.

Solutions for Yellowing Leaves of Asparagus Fern

Besides watering frequently and spraying water frequently as usual so that the water supply is sufficient, asparagus fern also requires attention to several other key points so that its leaves will not turn yellow for 10 years.

1. It cannot be exposed to direct sunlight. Asparagus fern likes cool, shady places, but it cannot be too dark either, so it should be placed in a bright, well-ventilated room with north-south exposure, and remember to keep it some distance from the window.

2. Do not smoke at home, or place the asparagus fern in a place with heavy cooking fumes. Over time, this will cause smoke poisoning in the asparagus fern, leading to yellow leaves.

3. Generally, asparagus fern does not need fertilizing. If it is one that has been grown for many years, a small amount of homemade organic fertilizer can be applied appropriately. Note that it must be a small amount, and it must not be sprinkled on the leaves or roots of the asparagus fern.

4. Leaves of asparagus fern that have already turned yellow cannot turn back, so as long as leaves have turned yellow, cut them off. If half the leaves have turned yellow, then cut off half, and do not be soft-hearted.

5. The biggest cause of yellowing asparagus fern leaves is lack of water, so after cutting off the yellow leaves, promptly replenish water for the asparagus fern. Gardening enthusiasts who have heating or underfloor heating at home and whose temperature can reach above 20°C can appropriately water more. Once the water is sufficient, the asparagus fern naturally will not have yellow leaves, but be careful not to let water accumulate!

6. Rescue care after yellowing. Generally speaking, after asparagus fern leaves turn yellow, it is very difficult for them to turn green again. The weak, diseased branches and leaves will consume the nutrients of the whole plant. In this case, one should sacrifice the lesser to save the greater and cut off the yellowed branches and leaves to ensure that the new branches and leaves can grow healthily.