What to Do When Succulent Roots Rot
When succulents develop root rot, it not only affects the plant's aesthetics but may also lead to the death of the entire plant. This article systematically explains the full process of identifying and treating rot through pathological analysis and practical guidelines, helping plant enthusiasts save their beloved succulent potted plants.
Analysis of Core Causes of Succulent Root Rot
Fungal Infection Pathogenesis
65% of root rot cases are caused by fungi like Fusarium and Pythium, which rapidly reproduce in moist soil, invade the plant's vascular bundles through root wounds, and block water transport, leading to tissue necrosis.
Key Points for Watering Frequency Control
Succulents, which originate from deserts, have water-storing roots. It is recommended to water once every 15-20 days in spring and autumn, and extend to 30 days during the summer high-temperature dormant period. The bamboo stake test can be used to judge: insert a bamboo stake into the potting soil for 2 hours, and if there are no wet traces, it can be watered.
Pest Syndrome Damage Model
Pests like root mealybugs create tiny wounds through their mouthparts, which can increase the probability of fungal infection by 4 times. Regularly wiping the edges of the pot with a 75% alcohol wipe can effectively prevent the breeding of eggs.
Graded Treatment Plan for Succulent Rot
Emergency Measures for Crown Rot
After removing the infected area, it is recommended to use a double disinfection method: first cover the incision with carbendazim powder, then spray with a bio-agent containing validamycin to form a composite protective layer. Focus on preserving healthy tissue with growth points.
Techniques for Treating Stem Lesions
When lignified stems of Euphorbia and other plants develop rot, it is necessary to cut the stem lengthwise to check the extent of the lesion. Retain at least 3cm of healthy stem, and seal the top of the incision with a candle to kill bacteria and prevent water evaporation.
Comprehensive Control of Black Rot Disease
Immediately switch to a sterile matrix of perlite: vermiculite = 7:3 at the early stage of the disease, combined with metalaxyl treatment. Maintaining an ambient temperature above 18°C at night can significantly increase the success rate of treatment.
Building a Succulent Maintenance Prevention System
Establish a periodic inspection system: conduct root health checks on a fixed date each month. Using a transparent root control pot allows for direct observation of the root condition. It is recommended to add 10% activated bamboo charcoal particles to the soil, as their porous structure can absorb excess moisture and release potassium elements to enhance disease resistance.
Rainy Season Protection Plan: During continuous rainy weather, lay a 1cm thick layer of colored stones on the surface of the potting soil, which can accelerate drainage and reflect excess light. Simultaneously, use a fan to create air flow and keep the ambient humidity below 55%.
Through precise identification of rot types + staged treatment + environmental control, the success rate of treating succulent root rot can be increased to 82%. It is recommended to establish a plant health record, documenting each watering, fertilizing, and pest and disease situation to form a scientific maintenance loop. Regularly check the junction of the leaf back and stem base with a magnifying glass to eliminate diseases in the initial stage.