schiedeana ssp. giselae (Mart.-Avalos
& Glass) Lüthy fa. albiflora
Garden origin (Nursery
Conservation status: Listed in
CITES appendix 2.
Synonyms: Mammillaria giselae albiflora
Description: It is a very choice and selected
white flowering form
Mammillaria giselae. This plant has smaller white flowers and many thin feathery
spines, that envelop almost completely the plant body.
Stem: Spherical, clustering
Spines: No central spines ; up to 30 radials ( 4-6 mm ), feathery
Flowers: Tiny (less than 1 cm) white flowers in March.
are white with pale pinkish shades.
Cultivation: It is a
slow growing species
of easy culture, recommended for any collection, it doesn't require any
special treatment. Water regularly in summer, but do
not overwater (Rot prone)
Use pot with good drainage and a very porous potting media,
keep dry in winter.
Feed with a high potassium
fertilizer in summer.
It is quite frost resistant if kept dry, hardy as low as -5° C (some
reports give it hardy to -5°C)
Sun Exposure: High levels of light are needed to
flower and for good spine development.
Can be sunburned if moved
from shade/greenhouse into full sun too quickly. During the spring it
may be able to take full sun until the heat arrives at the end of
spring. In an area that has hot afternoon sun, it may be able to take
full morning sun, but requires afternoon shade or afternoon light shade.
If grown correctly, it will reward the grower with generous
displays of purple flowers.
Clustering in cultivation after several years and easily flowered.
For best results, use a shallow pot, and only use the smallest
diameter pot that will accommodate the plant.
Propagation: Direct sow after last frost
(usually) or division, wait
offsets that appear at the
base of old clustered
are 1/3 the size of the parent and then detach and plant.
(Cuttings root quickly)
Photo of conspecific taxa, varieties, forms and cultivars of