root rot on Euphorbia
Quick answer
If your Euphorbia has root rot, the most likely cause is: Euphorbia is a summer-type succulent that stores moisture in its stems and has fine, weak roots. When too much water is given or when excess water is left standing in a saucer beneath the pot, the root zone stays saturated, suffocates the fine roots, and the plant starts to rot from the roots outward as fungal pathogens colonize the wet tissue.
Start here:
- 1. Empty any water that collects in dishes beneath the pot after watering and keep saucers clean, since standing water around the base of an Euphorbia pot quickly turns the root zone soggy and triggers root rot.
- 2. Water Euphorbia only when the soil has dried out, pour at the base of the plant rather than over the body, and water in the evening during summer so the pot temperature does not spike around wet roots.
Why Euphorbia gets root rot
Euphorbia
Euphorbia is a summer-type succulent that stores moisture in its stems and has fine, weak roots. When too much water is given or when excess water is left standing in a saucer beneath the pot, the root zone stays saturated, suffocates the fine roots, and the plant starts to rot from the roots outward as fungal pathogens colonize the wet tissue.
How to reverse root rot on Euphorbia
- 1
Empty any water that collects in dishes beneath the pot after watering and keep saucers clean, since standing water around the base of an Euphorbia pot quickly turns the root zone soggy and triggers root rot.
- 2
Water Euphorbia only when the soil has dried out, pour at the base of the plant rather than over the body, and water in the evening during summer so the pot temperature does not spike around wet roots.
- 3
If root rot is suspected, unpot the plant, brush off old soil, cut away any black or mushy roots with sterile tools, and let the cuts callus before repotting into a dry, gritty, fast-draining mix.
Keep root rot off this Euphorbia
Water only when the soil has fully dried out, use a fast-draining gritty mix in a porous pot, never let pots stand in pooled water, and provide strong light with steady ventilation so the root zone dries predictably between waterings.