Snake Plant Root Rot: What to Do? A Detailed Guide to the Latest Treatment Methods
The snake plant is a common indoor potted foliage plant, also known as mother-in-law's tongue, Sansevieria, and thousand-year plant. It is a perennial evergreen herbaceous plant of the genus Sansevieria in the family Liliaceae, suitable for decorating studies, living rooms, bedrooms, and other spaces for long-term appreciation. Although it is easy to grow, some flower lovers still encounter root rot in snake plants. Let's take a look below at what to do about snake plant root rot!
Causes of Snake Plant Root Rot
1. Improper watering: Most cases of snake plant root rot are caused by overwatering. Because the root system is extremely underdeveloped, the plant is often planted shallowly, and when some flower lovers water too much, the potting soil cannot evaporate the excess in time, and over time this leads to root rot. The correct way to water a snake plant is to water as little as possible, and to judge the amount of water based on the drainage condition of the potting soil, so as to avoid root rot to the greatest extent possible.
2. Pests and diseases: One situation in which snake plant root rot occurs is the appearance of disease. When newly planting a snake plant, the growing medium must be sterilized and disinfected with high temperature or chemicals. If the snake plant has root rot or stem base rot, promptly drench with 50% thiophanate-methyl or sulfur suspension concentrate at 700 times dilution, or 50% carbendazim wettable powder at 500 times dilution.
What to Do About Snake Plant Root Rot?
1. For a snake plant that already has root rot, clean away the rotted parts of the roots thoroughly. If conditions permit, sterilize with a fungicide such as carbendazim, then dry it in a shady place and replant it to grow new roots (it is recommended to root it in cuttings media such as plain sand, vermiculite + peat, etc.). You can also knock the snake plant out of the pot, gently remove the soil, cut off the rotted roots with clean, sharp scissors, and preferably soak the roots in a 0.02-0.05% potassium permanganate aqueous solution for about 1 minute, then remove, dip in a little sulfur powder or plant ash, and let dry.
2. If the snake plant's root rot is not severe, you can replace it with fresh potting soil and repot it, reduce the frequency of watering, and keep it in a semi-shady place for care. Normally you can mist the leaves appropriately or gently wipe off dust with a damp cloth. After new roots sprout, return to normal watering, and you can apply 1-2 light fertilizer applications, waiting until new roots and new leaves grow.
3. If the snake plant's root rot is severe and the root ball has an off odor, you must wash off the old soil, cut off the rotted roots, and replant. Before planting, soak the roots in 800 times diluted potassium permanganate solution to preserve them and promote rooting. The growing soil should be loose and well-draining. After planting, place it in a shady spot for one week to recover, mist the leaves frequently, and do not fertilize the roots during this period. After new leaves extend, switch to normal care.
How to Grow Snake Plants
1. Soil: Snake plants are not demanding about soil and can be managed fairly extensively. They like loose sandy soil and humus soil, and tolerate drought and poor soil. For potting, you can use 3 parts fertile garden soil, 1 part coal cinders, and add a small amount of soybean cake crumbs or poultry manure as base fertilizer. They grow very robustly, and even when the pot is completely filled this does not inhibit their growth. Generally repot once every two years, in spring.
2. Light: Snake plants grow well under conditions of ample light. Except in midsummer, when direct sunlight must be avoided, they should receive plenty of sunlight in the other seasons. If placed in too dark a spot indoors for too long, the leaves will darken and lose vitality. However, indoor potted plants must not be moved suddenly into sunlight; they should first acclimatize in a dark spot to avoid scorching the leaves. If indoor conditions do not allow it, they can also be placed in a spot relatively close to sunlight.
3. Temperature: Snake plants originate from western Africa and southern Asia, and are distributed in tropical Africa and India. The suitable growing temperature is 20-30°C, and the overwintering temperature is 10°C. In winter the temperature must not stay below 10°C for long periods, otherwise the base of the plant will rot, causing the entire plant to die.
4. Water: Snake plants should be watered in moderation, following the principle of preferring dry over wet. Normally wipe dust from the leaf surface with clean water to keep the leaves clean and glossy. In spring, when new plants sprout at the root crown, water a little more to keep the potting soil moist; in the high-temperature summer season also keep the potting soil moist regularly; after late autumn, control the amount of watering and keep the potting soil relatively dry to enhance cold resistance. During the winter dormant period, control watering and keep the soil dry, and avoid pouring water into the leaf rosette.
5. Fertilizing: Snake plants are not demanding about fertilizer. Applying only nitrogen fertilizer over the long term will cause the markings on the leaves to become dull, so a compound fertilizer is generally used. Fertilizing should not be excessive. During the peak growing season, apply fertilizer 1-2 times a month, in small amounts. You can use standard compost when repotting, and during the growing season apply a dilute liquid fertilizer 1-2 times a month to ensure the leaves are verdant and thick. You can also evenly bury 3 holes of cooked soybeans in the soil at the edge of the pot, 7-10 beans per hole, taking care not to let them touch the roots. Stop fertilizing from November to March of the following year.