root rot on Mammillaria Candida
Quick answer
If your Mammillaria Candida has root rot, the most likely cause is: Mammillaria candida is particularly rot-prone if kept too wet in cool weather, when its dense, white-spined body sits in damp substrate and fungal rot spreads quickly up the stem from the roots. The plant carries 10cm/4in wide stems that, in adequate light, are so densely covered in white spines that the stem is completely hidden, so early signs of basal rot are easily missed until the tissue turns soft and discoloured.
Start here:
- 1. Keep Mammillaria candida in a shallow pot with very fast-draining cactus compost and let the soil become almost dry between waterings, especially during cool weather, so the tuberous roots do not sit in moisture.
- 2. If rot is visible on the stem, take a clean rot-free cutting from the tip with a sterilized tool, allow the cut surface to heal and callus, and reroot it in fresh, porous cactus compost.
Why Mammillaria Candida gets root rot
Mammillaria Candida
Mammillaria candida is particularly rot-prone if kept too wet in cool weather, when its dense, white-spined body sits in damp substrate and fungal rot spreads quickly up the stem from the roots. The plant carries 10cm/4in wide stems that, in adequate light, are so densely covered in white spines that the stem is completely hidden, so early signs of basal rot are easily missed until the tissue turns soft and discoloured.
How to reverse root rot on Mammillaria Candida
- 1
Keep Mammillaria candida in a shallow pot with very fast-draining cactus compost and let the soil become almost dry between waterings, especially during cool weather, so the tuberous roots do not sit in moisture.
- 2
If rot is visible on the stem, take a clean rot-free cutting from the tip with a sterilized tool, allow the cut surface to heal and callus, and reroot it in fresh, porous cactus compost.
Keep root rot off this Mammillaria Candida
Use a good, porous cactus compost, water only when the soil is nearly dry, and provide a dry, cool winter rest without overwatering so Mammillaria candida roots stay healthy and rot-free.