Flowers: Glossy, pink in shades of salmon with yellow centers, up to 8 cm in diameter.
Cultivation and propagation: Suitable for the home or a greenhouse. During winter's rest period they should be dry and cool. It is frost resistant to -4°C but thrives best with additional heat, they like only a short winter's rest. If the soil is allowed to be dry for too long root loss could follow but equally the same result would occur if the plants are both wet and cold. Rot easily if the substrate is wet and cold. Prefers filtered bright light with ample airflow. Will enjoy regular water in summer. Best if watered with rain water. A well grown plant is a fresh glossy grass- green, contrasting with reddish spines.

Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz

Bloom Season	Spring
Botanical Name	Notocactus roseoluteus
Common Name	Tom thumb cactus
Common Name	Tom thumb cactus, Lemon ball cactus, Parodia mammulosa
Dormancy	Winter
Family	Apocynaceae
Family	Cactaceae
Flower Color	Pale pink
Flower Color	Pale pink, golden yellow
Genus	Notocactus
Growth Habit	Rounded
Growth Habit	Rounded, spiky
Growth Rate	Moderate
Hardiness Zone	9 11 (USDA)
Mature Size	4 in. tall
Mature Size	4 in. tall, 6 in. wide
Native Area	Argentina
Native Area	Argentina, Brazil, Uruguay
Plant Type	Perennial plant
Plant Type	Perennial plant, cactus
Propagation	By seeds (spring)
Propagation	By seeds (spring), by cuttings (summer)
Resistance	Drought tolerant
Resistance	Drought tolerant, pest resistant, frost tolerant
Soil PH	6.5
Soil PH	6.5, Acidic, Neutral
Soil Type	Cactus potting mix soil
Special Features	Globose stem
Special Features	Globose stem, easy to grow
Sun Exposure	Full sun, partial shade
Toxicity	Safe for humans
Toxicity	Safe for humans, mildly toxic (Keep away from children)
Watering Needs	Deep irrigation (Once a month during growing season)