Golden barrel cactus care guide
Kroenleinia grusonii
Also known as: Echinocactus grusonii, Mother-in-law's cushion
Pets and children
Caution advised
The long, stiff spines can pierce skin and mouths deeply; no toxicity is reported, but keep it out of reach and consult a veterinarian or doctor if spines lodge or it is eaten.
How often to water Golden barrel cactus
- Spring–Summer (Mar–Sep)
- Every 10 days
- A summer grower: water until it drains from the pot two or three days after the soil dries through, as a guide, in the evening in midsummer.
- Autumn (Oct–Nov)
- Every 14 days
- As it cools, water about one to two weeks after the soil dries.
- Winter (Dec–Feb)
- Every month
- Dormant: nearly dry, with a light watering about once a month on a warm morning, as a guide.
Light and placement for Golden barrel cactus
A sunny, airy spot all year, as a guide: too little light thins and fades the golden spines and stretches the crown, and while it takes full summer sun, acclimate it gradually when moving it out from indoors.
Overwintering Golden barrel cactus
Overwintering guide: 3°C (37°F) or above
Kept dry it generally takes about 3°C, and larger plants are hardier: as a guide, move it to a sunny window when nights drop below 5°C and rest it dry, since frost leaves white scars.
Fertilizing and repotting Golden barrel cactus
Fertilizer
Feed lightly: diluted liquid fertilizer about once a month from May to September, none in fall or winter, as too much can split the skin.
When to repot
Spring–Summer (Mar–Sep)
Common problems with Golden barrel cactus
- Watered in winter, the roots rot and the base browns.
- In dim indoor light the spines weaken and the crown grows thin.
- Standing water in the saucer or long rains rot it.
Tips for growing Golden barrel cactus
- Turn the pot now and then so the whole plant gets even sun.
- It grows slowly, so repotting every two or three years in spring is enough.
- Wrap it in thick folded newspaper to lift it at repotting time.
These are AI-generated general guidelines. They vary with the variety, the placement and the pot size. For effects on pets or children, consult a veterinarian or a doctor.
Keep your plant log going
Greenery is a free app that keeps your plant care going, with watering reminders and photo records. Available on iOS and Android.
