Notocactus magnificus 5.5cm
Notocactus magnificus (F.Ritter) Krainz
Συνώνυμα: Parodia magnifica (F.Ritter) F.H.Brandt, Eriocactus magnificus F.Ritter
Origin and Habitat: Brazil (Rio Grande do Sul) and nearby Paraguay, Uruguay, Argentina. It has a small range (extent of occurrence is 2,600 km2) and it is severely fragmented.
Description: It is still known in cultivation with its old name Eriocactus magnificus, is a bluish-green geometric globular cactus with wool that grows in clusters and produce absolutely brilliant yellow flowers. It glistens under a haze of pale-yellow spines.
Cultivation and Propagation: It is an easy to grow ornamental species suited for any well drained soil in half or full sun.
Growth rate: It is a relatively rapidly growing and easily flowering species that will make clumps given the best conditions.
Soil and pots: It likes deep pot with generous drain holes, needs a very airy potting medium, very permeable to water which mainly consists of non-organic material such us clay, pumice, lava grit, expanded slate and only a little peat, slightly acid, pH-value between 4,5–6. Re-pot every two years.
Fertilization: Need a perfect fertilizer diet in summer. Use preferably a cactus and succulent fertilizer with high potassium content including all micro-nutrients and trace elements or slow release fertilizer.
Exposure: This plant need full sun but tolerate moderate shade, and a plant that has been growing in shade should be slowly hardened off before placing it in full sun as the plant will be severely scorched if moved too suddenly from shade into sun.
Watering: No water should ever be allowed to stand around the roots. Keep almost completely dry in winter. However, this spurge will tolerate dryness and can even thrives in poor, dry soils, but do better when grown in nutrient-rich soils with regular watering.
Hardiness: Tender. This cactus cannot tolerate any frost. It can be grown outdoors in frost-free climates.