What to Do When Asparagus Fern Leaves Turn Yellow? A Few Tips to Keep It Lush and Green
Asparagus fern (Asparagus setaceus) is a very attractive indoor plant, and many people like to keep a pot of it at home or on their office desk. But improper care can turn a nice green fern into a yellow one. So what causes asparagus fern leaves to turn yellow? Let's take a look below at the causes of yellowing in asparagus fern and how to solve them.
I. Introduction to Asparagus Fern:
1. What is the flower language of asparagus fern?
Flower language: eternity
2. What are the symbolic meanings of placing asparagus fern?
(1) Placed at the doorway or in the living room: lasting friendship
(2) Placed in the bedroom: marital harmony and lasting love
(3) Placed beside the TV in the living room: pursuit of health
(4) Placed in the kitchen or a corner of the living room: cleanliness and freshness
(5) Placed in the study: the pursuit of success
(6) Used as a wedding accessory: a happy and sweet marriage, and everlasting love
II. What to Do When Asparagus Fern Leaves Turn Yellow?
Cause 1. Improper watering: Asparagus fern likes moisture but is afraid of both drought and waterlogging, so too much or too little watering can cause leaves to turn yellow. For example, too little watering causes the leaf tips to dry out, while too much watering causes root rot, which turns the leaves yellow.
Solution: When watering, try to follow the principle of “don't water until dry, and water thoroughly when you do.” Generally, water once every 2 to 3 days in spring, once each morning and evening every day in summer, once every 2 to 3 days in autumn, and once every 5 to 6 days in winter. If the weather is very hot and dry, besides keeping the soil moist, also spray the branches and leaves frequently and keep the ground around the plant moist to increase air humidity.
Cause 2. Strong light exposure: Asparagus fern likes to grow in semi-shaded environments, but this does not mean it likes strong light. So if exposed to strong light for a long time, the chloroplasts will be damaged and the leaves will turn yellow. At the same time, prolonged light exposure causes the leaves to lose water rapidly, leading to dehydration and yellow leaves.
Solution: Move the asparagus fern to a shady spot and spray a small amount of water on the leaves as appropriate to solve the yellowing.
Cause 3. Insufficient light: Asparagus fern likes to grow in semi-shaded environments, but this does not mean it likes dark places. So if kept in a spot lacking light for a long time, the leaves cannot carry out photosynthesis and lack chlorophyll, which turns the leaves yellow.
Solution: Move the asparagus fern to a living room or coffee table with indirect scattered light.
Cause 4. Too low a temperature: Asparagus fern likes to grow in warm places, and its suitable growing temperature is generally 15 to 25 degrees. If the temperature is too low, cold damage occurs and the leaves turn yellow; if the temperature is too high, growth stops and the leaves turn yellow.
Solution: Move the asparagus fern to a warm environment, water it with an appropriate amount of water, and give it some scattered light. If the winter temperature is very low, move it into an air-conditioned room, but never place it at the air conditioner vent, so the leaves are not dried out by the airflow.
Cause 5. Improper fertilizing: Asparagus fern does not have high fertilizer requirements, but it cannot go without fertilizer either. Generally, too much or too little fertilizing can cause yellowing. For example, too much fertilizer causes fertilizer burn, making the leaves slowly turn yellow; too little fertilizer causes a nutrient deficiency that turns the leaves yellow.
Solution: Fertilize appropriately or repot with fresh soil regularly. When fertilizing, it is best to apply a diluted, well-rotted fertilizer once a month. Never use agricultural fertilizer, and try to apply it to the roots, which can effectively improve yellow leaves.
Cause 6. Smoke and dust pollution: Asparagus fern is sensitive to smoke, dust and toxic gases. If it is often placed where there is dust, smoke or toxic gas, its leaves will turn yellow.
Solution: First spray a little water on the asparagus fern leaves, then wash the leaves, and move it to a well-ventilated place.
Cause 7: Heat or radiation given off by electrical appliances: When asparagus fern is exposed to the heat or radiation given off by electrical appliances, it becomes uncomfortable and gradually develops yellow leaves.
Solution: Cut off the yellow leaves, then move the plant far away from electrical appliances and keep good ventilation and light.
Cause 8. Diseases: During the growing period of asparagus fern, poor management can lead to diseases and pests such as leaf blight and scale insects, causing the leaves to turn yellow.
Solution: Spraying 1% Bordeaux mixture or a 1000-fold dilution of 40% omethoate can effectively prevent this.
The above are the 8 causes of yellowing asparagus fern leaves. So if your asparagus fern has a yellowing problem, it must be caused by one of the above, and you only need to deal with it according to the solution.
III. What to Do When Asparagus Fern Leaves Turn Completely Yellow?
1. Repot: Repot the asparagus fern, then water it with an appropriate amount of water and place it in a well-ventilated, well-lit spot. If it can no longer be saved, just discard it.
2. Prune: Cut off all the top branches and stems, leaving only about 3 to 5 cm of stems. If it is already nearly withered and dying, just discard it.
3. Remove rotten roots: Wash the asparagus fern root system with clean water and check whether the roots are rotten. If they are, cut off all the rotting parts, residual roots and dead roots.
In general, if you want your asparagus fern to be lush and green, you need to handle watering, fertilizing, light and ventilation well, which can effectively prevent the leaves from turning yellow. But if they do turn yellow, there is no need to panic. Just find the cause above and treat it accordingly. I hope this helps you.