Rebutia ritteri
Crown cactus, Ritter's crown cactus
Also known as Lobivia ritteri
- Height × spread
- 0.05m × 0.2m
- Position
- Full sun
- Hardiness
- Frost free greenhouse 1C & above (RHS H2)
- Flowers
- Summer
Availability
Please ask in store about availability
Many plants are seasonal. Call 01234 567890 to check current stock.
About this plant
This makes a cluster of short rather rounded stems. There are up to fifteen ribs on each small stem and they are covered with a lattice of grey spines with darker tips. There are showy red flowers.
- Flower colour
- Red
- Foliage colour
- Green
- Variegated
- No
- Scent
- No
- Shape
- Round
- Height
- 0.05m
- Spread
- 0.2m
- Flowers in
- Summer
- Evergreen
- Evergreen
- Garden style
- Indoors, Conservatory
- Sun or shade
- Likes full sun
- Soil type
- Sandy soil
- Soil pH
- Acid (ericaceous), Alkaline
- Drainage
- Well drained soil, Dry soil
- Hardiness
- Frost free greenhouse 1C & above (RHS H2)
- Borders & containers
- Borders and containers
- Indoor light
- full light at all times
- Indoor temperature
- 5C minimum temperature
- Hazards
- Yes, leaves & stems are prickly/thorny
AutumnNow
Autumn-Winter · Indoors
Keep dry during dormancy
Keep dry during the period of dormancy or resting, which is likely to be from the middle of the autumn until spring.
Spring
Spring-Summer · Indoors
Feed with cactus feed
Use specialist cactus feed and apply monthly from April to August, using the quantity advised on the label.
Spring-Summer · Indoors
Water during growth
Water regularly as soon as growth becomes apparent until the middle of the summer.
Adopt a regime whereby plants are thoroughly watered every week so that they do not become dessicated. In hot weather watering may need to be more frequent, but less often in cool or moist conditions.
Planting & general
Indoor temperature · Planting
5C minimum temperature
This plant requires a minimum temperature of 5 Centigrade.
Compost · Planting
Cactus compost for repotting
Use standard cactus compost. Top the soil with grit or granite chips to ensure perfect drainage around plant stem. Repot when the plant is dry and delay watering for 3 days after repotting.
You can also make own compost using 3 parts John Innes no. 2, 1 part horticultural grit, and 1 part horticultural grade perlite or pumice. There are many 'recipes' available and opinions vary widely - consult specialist literature or websites.
Indoor plant · Planting
Position in a sunny spot, close to window
Give this plant a position where there is as much light and sunlight as possible, within 2-3 metres of a sunny or bright window (one that is south, east, or west facing).