Turbinicarpus valdezianus var. albiflorus (Pazout) M.Zachar, R.Staník, A.Lux & I.Dráb
Turbinicarpus valdezianus var. albiflorus is a dwarf, globular cactus, up to 2 inches (5 cm) tall and up to 0.8 inch (2 cm) in diameter, with a stem completely divided into angled tubercles and obscured by dense spines. It has 30 or more distinctive "radial" spines, which are white and feathery. The radial spines spread out horizontally, forming small "umbrellas" on the tips of the tubercles. Unlike some other species, it lacks central spines. The flowers are pure white with yellow stamen and white stigma.
USDA hardiness zones 9b to 11b: from 25 °F (−3.9 °C) to 50 °F (+10 °C).
How to Grow and Care
Turbinicarpus prefer to be in a well ventilated position in full sun to maintain a good body color and spinal development. The golden rule when it comes to watering is "never water when the soil is still damp". This is the one error that will certainly kill any plant. Watering should commence in the spring depending upon the weather conditions at the time. The plants should initially be given a light spray to gently encourage them into growth.
These cacti are all able to withstand high summer temperatures and indeed benefit, providing accompanied by good ventilation. Do not be tempted to overcrowd the plants, they will be far happier with a little space to allow the air to circulate. Winter temperatures can be set as low at 44 to 46 °F (7 to 8 °C). Indeed the plants need these low temperatures to ensure a sustained dormant period resulting in good growth and flowering the following growing season.
Learn more at How to Grow and Care for Turbinicarpus.
Turbinicarpus valdezianus var. albiflorus is native to Mexico (Matehuala, San Luis Potosí).
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