A copper crown of areoles
Younger spines at the crown are usually warmer in colour and mellow as they age.
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If the windowsill had a mascot, it would be this character 🌵
Family: Cactaceae · Nursery pot diameter: 5.5 cm
Notocactus schlosseri is a small globose cactus with upright ribs, orderly areoles and spines ranging from amber to copper-red.
The strict repetition of its spines softens when large yellow flowers appear at the crown, creating a vivid contrast between the warm-toned body and luminous corolla.
Its character comes from three clearly readable elements: ribs, copper rows of spines and flowers that visually take over the crown.
Younger spines at the crown are usually warmer in colour and mellow as they age.
Vertical grooves organise the body into repeating sections that expand with stored water.
On a mature plant, the silky yellow corolla opens above the spines and completely changes the sense of scale.
Why you’ll love it: it stays compact all year and, in flower, turns from a geometric miniature into a small luminous event.
A sunny windowsill after acclimatisation, or a protected outdoor position in warm weather, lets the spines retain their dense rhythm. Place the pot where passers-by will not brush against it.
In individual pots, choose low cacti sharing a similar dry-down cycle but offering a different colour language.
Very bright light and ample direct sun after gradual acclimatisation, with protection from abrupt summer scorch.
During active warm growth, water deeply only after the whole pot has dried; keep the mix much drier in winter.
Warm growth, moving dry air and a cool but dry winter rest. Protect from frost and cold damp conditions.
Spines can injure eyes, noses and paws; keep it out of easy contact.
Very bright light and ample direct sun after gradual acclimatisation, with protection from abrupt summer scorch.
During active warm growth, water deeply only after the whole pot has dried; keep the mix much drier in winter.
Do not trap humidity around the crown. Airflow after watering shortens the time the neck remains damp.
New growth and flower buds relate to a bright warm season following a cooler dry rest. Do not feed when the body is not growing.
Choose a mineral, fast-draining mix and a pot with an unobstructed hole. A moderately snug root zone dries predictably.
A low dose of Cactus & Succulent Focus may be used in active growth. With fresh nutrient-containing mix, wait about two months.
The trade name Notocactus schlosseri Vliet is a homotypic synonym of accepted Parodia schlosseri (Vliet) Hofacker, A.S.Oliveira & R.Pontes.
Albert van Vliet published the species in Notocactus in 1974. The accepted combination in Parodia was published by Hofacker, Oliveira and Pontes in 2024.
The current botanical record places its native range in Uruguay within the subtropical biome. It is not a horticultural cultivar.
From natural habitat to care: Open subtropical sites in Uruguay provide strong seasonal light and water that does not remain permanently around the roots. In cultivation, this supports sunny growth with a full water-and-drain cycle and a distinctly drier, ventilated winter phase.
Recognition of the combination Parodia schlosseri dates from 2024 and replaces earlier placement under P. erubescens.
They produce spines, flowers and, in some cacti, branches—a feature unique to the cactus family.
The stem changes volume without splitting its epidermis as water reserves vary.
Flowers appear near the crown, where tissue is sufficiently mature yet still active.
Plant-specific answers for Notocactus schlosseri, from light and watering to its seasonal rhythm.
Very bright light and ample direct sun after gradual acclimatisation, with protection from abrupt summer scorch.
During active warm growth, water deeply only after the whole pot has dried; keep the mix much drier in winter.
New growth and flower buds relate to a bright warm season following a cooler dry rest. Do not feed when the body is not growing.
Stop watering and inspect the roots immediately. A soft, dark or translucent base often indicates rot, not simple thirst.
Flowering depends on maturity, strong light and the correct seasonal cycle. A bloom cannot be promised on every young specimen.
Spines can injure eyes, noses and paws; keep it out of easy contact.