Indoor growers grow parsley for spicy vitamin greens or aromatic roots. You generally want to grow it for the sake of bright green leaves.
Sometimes you will notice the leaves turn red and lose their vibrant color. I will tell you why parsley leaves turn red. Also measures to combat and prevent this problem.
Lack of phosphorus can cause parsley leaves to turn red. Improper irrigation, improper soil pH, insect and disease infestations, and environmental stress are all reasons for interrupted phosphorus supply.
Keep reading I will tell you the cause and solutions for parsley leaves turning red.
7 Reasons Why Parsley Leaves Turn Red
Parsley needs minimal but regular care to grow at home. If the parsley leaves turn red, it’s a sign that something is wrong and you need to take action.
These are some of the most common causes why parsley leaves turn red.
Lack of phosphorus can cause parsley leaves to turn red
Phosphorus is one of the fundamental nutrients of any plant. Lack of phosphorus can cause parsley to show symptoms such as red leaves. Parsley thrives in rich organic soil.
The lack of phosphorus causes the plant to produce a pigment called anthocyanin. This pigment is responsible for dyeing the leaves of parsley plants red.
Many factors can prevent plants from taking up phosphorus from the soil. Although phosphorus is present in the soil, plant roots cannot absorb it. In this case, the parsley leaves may turn red.
How to fix
You should not apply phosphorus until you confirm the deficiency. You should do a soil test and consider applying phosphorus if needed. An overdose of phosphorus can harm your parsley.
If you find a phosphorus deficiency in the soil, feed your parsley phosphorus. Bone meal is a good source of phosphorus for the plant. However, it releases slowly but works great.
You can also consider commercially available NPK fertilizers. Here is a quick and helpful video on how to test soil for phosphorus.
Overwatering can cause parsley leaves to turn red.
Too much water disrupts the normal functioning of the roots. Therefore, it cannot absorb the nutrients needed for normal parsley growth.
Excessive moisture also causes parsley root rot. This disease prevents parsley from absorbing phosphorus and other nutrients, even though they are in abundance.
How to fix
If you’re sure you’ve overwatered your parsley, correct it. Don’t worry, it’s very easy to fix.
To fix over-watered parsley, let the pot dry out for a few days. Then take the plant out and inspect it carefully.
Remove enough soil to see the roots. Overwatering can cause root rot. If you find symptoms of root rot, cut off the infected part.
Then disinfect the root by sprinkling with charcoal. Now change the soil and transplant into a new container or use the old one after intensive cleaning with hot water.
compacted soil
It is normal for soil to compact over time. Compact soil reduces air permeability. In addition, water cannot seep into it.
If your parsley is not getting enough water and oxygen for its root system. the roots choke without getting the necessary oxygen.
The roots cannot absorb the available nutrients. Consequently, the lack of nutrients causes symptoms such as leaves turning red, yellow or brown.
How to fix
Do not loosen the soil more than 1-1.5 cm and try not to damage the roots near the surface.
Constant loosening of the soil in the pot destroys the compactness of the top soil layer. This makes the top soil layers breathable.
Evaporation of moisture from the soil layer decreases, moisture seeps into the root zone. Your parsley will be able to absorb available nutrients.
Submarine
Like other plants, parsley does not tolerate drought. If you do not provide it with the water necessary for the normal functioning of the physiological process, your parsley will show symptoms.
If there is no water, the root of the plant cannot extract nutrients from the soil. Because nutrients in the soil are only available in a water-soluble form.
How to fix
It is clear that you need to provide enough water to solve this problem. Make sure there is no standing water in the pot. Standing water is not good for parsley. You should use settled tap water or filtered water for irrigation.
Let the soil dry out a bit, then water again. In summer, parsley needs water more often than at other times. Reduce the frequency of watering in winter. In this season, parsley remains dormant.
You may also be interested in: Why Is My Mint Turning Brown? (And how to fix it)
soil pH
Parsley likes slightly acidic soils. The optimum pH for growing parsley ranges from 6.0 to 7.0, this range allows it to adequately absorb the necessary nutrients.
Without nutrients, parsley leaves turn red.
How to fix
Different plants have their preferred pH ranges. Therefore, you should pay attention to the pH mentioned for parsley.
To determine the pH of the soil, you need to test it. This is very easy to do with a pH test kit.
If you find that your soil is too acidic (pH below 5.5), that means you need to deoxidize (raise the pH). You can use wood ashes above ground for this.
This is also known as soil liming. Using dolomite (limestone) flour is the most popular method for deoxidizing soil.
Now, if you need to increase the acidity of the soil (lower the pH level), water with citric acid (lemon juice) works great for indoor plant pots.
excessive light
Like other plants, parsley needs light for photosynthesis. But in full sun, parsley leaves turn red and yellow. You can see it in the spring on the old leaves.
How to fix
In this case, you need to store the pot of parsley in a shady place. On hot, sunny days, water the parsley more frequently.
Make sure the soil does not dry out (no standing water). Also fertilize with nutrients. Eventually, your parsley will recover.
parsley diseases
There are several bacterial and fungal diseases that affect your parsley, causing serious damage. Stunted growth, with leaves turning red, yellow or brown, is the most common consequence.
These are the two diseases that can cause parsley leaves to turn red. Let’s learn more about them and also how to fight them.
- Stolbur’s phytoplasma
The causative agent of this viral disease is the Fitoplasma parasite. It causes chlorosis mainly along the leaf edge of the lower layers.
Then the leaves on these edges begin to turn red. This inhibits the growth of your parsley, the quality of leaves and roots deteriorates.
- rotten root
It is a fungal soil disease. It damages the root system and also the crown. The root system is unable to supply basic nutrients, after which the leaves of the plant slowly turn red or yellow.
How to fix
Remove infected plant parts or the entire plant if the infestation is severe. Excessive watering, lack of proper care, are the reasons behind outbreaks.
It is therefore better to avoid them. You can also use commercially available fungicides to combat these issues.
How to Prevent Parsley Leaves from Turning Yellow
To avoid the appearance of pests and the change of color of the leaves of your parsley, you must take the following measures:
- Follow the tips mentioned above and provide proper care such as watering, top dressing, and proper water drainage.
- Inspect the plant in time and remove damaged plants so as not to infect other plants.
- When growing parsley in greenhouse conditions, it is necessary to maintain the air temperature at least 20°С/68°F overnight. And during the day 24-26 °С/75.2°F-78.8°F.
- Store your parsley in a well-ventilated place.
- You should practice crop rotation to prevent diseases and pests.
- Before planting parsley, make sure the soil and containers are disinfected.
- Disinfect the seed before planting. For this purpose, before planting, the seeds are placed in a solution of potassium permanganate for 30-40 minutes, then dried.
- Choose disease-resistant varieties of parsley to plant. make sheet
- Fertilize the soil with potassium and phosphorus.
- Practice rapid thinning of plants; this method reduces the possibility of powdery mildew.
- Treat your parsley with soapy water, this destroys aphids and other pests that weaken the plants;
conclusion
Properly cared for, getting all the necessary nutrients, parsley almost never gets sick. Leaves turning red are not alarming. Carefully follow the steps and implement the solutions described in this article.
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