Why are Calla Lily plants weak?

Reasons for weakness

Calla lily is a tuberous plant, and the main reason for plant weakness is root damage. There are several reasons:

Improper watering

Calla lilies need sufficient water during their growth period, but they cannot be watered from top to bottom, as this will easily cause water to fill the center of the leaves, causing water accumulation in the tubers, making them susceptible to bacterial soft rot and causing root damage.

The soil is too wet and airtight

The cultivation soil for tuberous and bulbous plants should usually be loose and breathable, and avoid heavy, non-breathable and poorly drained yellow clay. If tubers are buried too deeply, they are prone to rot. Too dry soil and too dry roots can also cause the plant to become weak.

Improper fertilization

When the temperature drops below 10 ℃ or above 28 ℃, Calla lily will enter natural dormancy and the plant will stop growing. At this time, watering must be controlled and fertilization must be stopped. Otherwise, the plant will be weak and it will be difficult to survive after the dormant period.

Red spider infestation

Red spider mites will suck the sap of the plant and like to weave webs. When the entire leaves are entangled in the web, the calla lily will become extremely weak and will soon die.

Solution

Disinfection after removing the basin

Dig out the calla lily tubers, remove the rotten parts of the roots, then soak them in 800 times carbendazim solution and 1000 times potassium permanganate solution for 30 minutes, dry them and replant them in the pot.

If the original potting soil has been infected by bacteria, it is recommended to replace it. After repotting, cut the leaves and stems as short as possible to promote root development.

Watering and fertilizing

When watering, use the immersion pot method, allowing water to slowly seep into the flowerpot through the basin, thereby soaking the soil surface. This method can prevent root rot. Or when repotting, build a small mound of soil 1.5 to 2 cm high just above the roots to prevent water from pouring directly into the roots.

Use granular fertilizer for fertilization and sprinkle it on the surface. Try not to apply liquid fertilizer if the symptoms of plant weakness have not been completely alleviated.

Pest and disease control

Open windows for ventilation, and remember to spray regularly to maintain air humidity. If insect pests are found, spray the branches and leaves with 800 times diluted dimethoate, focusing on the back of the leaves. It is even simpler to use a small amount.