B and T World Seeds' reference number:
The average, annual, minimum temperature zone where Rebutia ritteri is cold hardy
USDA Zone:9 20° to 30°F (-6.5° to -1°C)
|Type of plant - perennial
Flower or inflorescence:
4x4.5cm., RED with CARMINE midstripe
~5mm. dia., ORANGE-BROWN
bo clust. br glob-cyl. to 3x4.5cm., GREY-GREEN
|Rebutia ritteri sales history
Synonyms (alternative names) for Rebutia ritteri:
Common names for Rebutia ritteri:
is included in the following
B and T World Seeds flowering plant categories.
|5||: Cactus Seed List|
|See also *Succulent Plant Seed List|
|43||: Herbaceous Border Plant Seed List|
|82||: Peruvian and Bolivian Natives|
|720||: Fire Resistant Plants|
|Different classes of resistance: some grow back, some don't burn, a few have highly inflammable leaves that leave the rest of the plant intact, some trees don't have lower branches.|
Some knowledge about growing from seed is necessary to germinate even the easiest seeds.
Most seeds require humidity to germinate, even desert plants like
require that their growing medium remains moist until germination.|
Most seeds require oxygen to germinate, if buried too deep in their growing medium, or if the medium is too wet,
the seeds may not get the oxygen they require.
Rebutia ritteri seeds will usually germinate in 5-180 days, even under good conditions germination may be erratic.
Sand, and loam, with some sphagnum moss or coir (coconut fiber/dust) make a good mix for germinating Rebutia ritteri and similar seeds. The mix needs to be free-draining, and to be slightly water retentive. Surface sow the seeds and just cover with sand. Start germinating the seeds in shady (dark), humid conditions. As the seeds start to germinate, increase the light and decrease the humidity.