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The Bishop's Cap
Cactus is resistant to frost and can survive temperatures down to
20°F. Allow Astrophytum myriostigma to remain dry
during winter months. Growth will increase in spring and
summer if fertilized. The stem can attain lengths of 3 feet
and 4 to 8 inches in diameter. The cactus is greenish but
totally covered with small white scales which cover up the green.
It has four to eight ribs with brownish, woolly areoles, but no
spines. Flowers appear in summer and are diurnal, 1.5 to 2.5
inches long and across, yellow, sometimes with a red center.
Requires a bright location; it grows best in medium to light shade
and normal cactus soil.
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