Description
Echinopsis cv Maria Piazza is one of the most popular and appreciated Echinopsis cultivars, it is the result of more than 20 years of devoted work by cacti enthusiast and hybridiser Bob Schick. (ISI 97-19; HBG 80605, Schick 1373-52.)
Habit: Freely pupping.
Stem: Globular, to 9,5 cm in diameter.
Central spines: Up to 30 mm long.
Flowers: Large sized up to 15 cm across.
Tepals: Lance-shaped to linear, involute and broadly ruffled, rich purplish-pink with dark pinkish-red midrib.
Throat-circle: White.
Filaments: Purplish-pink.
Stigma: Exserted, white.
Origin and Habitat
Garden origin (A distinctive cultivar created by cacti enthusiast and hybridiser Bob Schick )
Cultivation and Propagation
These plants are summer growers species that offer no cultivation difficulties. Grow them in rich, airy, porous, growing medium which mainly consists of non organic material such us clay, pumice, lava grit, and only a little peat or leaf-mould. If potted, repot preferably in the spring, if their roots become cramped. Generally, they should be repotted every other year in order to provide fresh soil. However, this doesn’t necessarily mean they’ll need larger containers. Fill about a quarter of the pot with broken crocks, gravel, etc. to promote good drainage. After repotting, do not water for a week or more. Water regularly in summer (but do not overwater), and let their soil dry out between waterings, keep rather dry in winter. No water should ever be allowed to stand around the roots. Feed with a high potassium fertilizer in summer.
Exposure: Outside they need a bright exposure, full sun or half shade in summer if the location is exceedingly hot or bright, inside needs bright light, and some direct sun. It can 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.
Frost Tolerance: Light frost protection required for safe cultivation, but many of the hybrids very frost resistant if kept dry (The hardiness varies from -5°C to -12° C depending on clone). This plants need a period of cool rest in winter to produce flowers abundantly. They flower freely indoors if conditions suit them.
Pest & Disease: Watch for infestations of mealybug, scale insects and spider mite.
Propagation: Easy to propagate from cuttings. Most of the Echinopsis clones produce shoots and can be reproduced exclusively by cuttings. The cuttings will take root in a minimum temperature of 20° C. Cuttings of healthy shoots can be taken in the spring and summer, Cut them with a sharp, sterile knife, leave the cutting in a warm, dry place for a week or weeks (depending on how thick the cutting is) until a callus forms over the wound. Once the callus forms, the cutting may be inserted in a container filled with firmed cactus potting mix topped with a surface layer of coarse grit. They should be placed in the coarse grit only; this prevents the cut end from becoming too wet and allows the roots to penetrate the rich compost underneath. The cuttings should root in 2 to 6 weeks.
Bibliography
Major references and further lectures
- John N. Trager “Huntington Botanical Gardens” online: http://www.huntington.org/botanicaldiv/schick/hybrids/maria\_piazza.html retrieved on 12-12-2013
From llifle page Echinopsis cv. Maria Piazza f. cristasta
Description
Echinopsis cv. Maria Piazza is one of the most popular and appreciated Echinopsis cultivars with large sized rich purplish-pink blooms. It is the result of more than 20 years of devoted work by cacti enthusiast and hybridiser Bob Schick. (ISI 97-19; HBG 80605, Schick 1373-52.) This beautiful crested variant is very-very rare and priced by cactus collectors.
Central spines: Up to 30 mm long.
Flowers: Large sized up to 15 cm across.
Tepals: Lance-shaped to linear, involute and broadly ruffled, rich purplish-pink with dark pinkish-red midrib.
Throat-circle: White.
Filaments: Purplish-pink.
Stigma: Exserted, white.
Origin and Habitat
Garden origin (A distictive cultivar created by cacti enthusiast and hybridiser Bob Schick )
Cultivation and Propagation
It is not too difficult in a greenhouse, although grows quite slowly. It is usually seen as a grafted plant but can grow on its own roots too.
Soil: Use a mineral well permeable soil with little organic matter (peat, humus).
Exposure: They need a good amount of light shade to full sun this help to keep the plants healthy, although slow growth.
Watering: Water sparingly from March till October (weekly during summertime, if the weather is sunny enough), with a little fertilizer added. Less or no water during cold winter months, or when night temperatures remain below 10° to prevent root loss. It is sensitive to overwatering (rot prone).
Fertilization: Feeding may not be necessary at all if the compost is fresh then, feed in summer only if the plant hasn’t been repotted recently. Do not feed the plants from September onwards as this can cause lush growth which can be fatal during the darker cold months.
Hardiness: Keep perfectly dry in winter at temperatures from 5 to 15 degrees centigrade. (but it is relatively cold resistant and hardy to -5° C, or possibly colder for short periods) In the rest period no high atmospheric humidity!! (Temperature Zone: USDA 9-11)
Crested growth: Unlike ‘monstrose’ varieties of plants, where the variation from normal growth is due to genetic mutation, crested growth can occur on normal plants. Sometimes it’s due to variances in light intensity, or damage, but generally the causes are unknown. A crested plant may have some areas growing normally, and a cresting plant that looks like a brain, may revert to normal growth for no apparent reason. If you have any of the crested part left you need to remove the normal growth and leave the crested part behind this will need to be done regularly.
Propagation: Grafting or cuttings. Plants are usually grafted onto column-shaped cacti but proved to be able to produce their own roots if degrafted. Cuttings will take root in a minimum temperature of 20° C (but better in hot weather). Cuttings of healthy shoots can be taken in the spring and summer. Cut the stem with a sharp, sterile knife, leave the cutting in a warm, dry place for a week or weeks (depending on how thick the cutting is) until a callus forms over the wound. Once the callus forms, the cutting may be inserted in a container filled with firmed cactus potting mix topped with a surface layer of coarse grit. They should be placed in the coarse grit only; this prevents the cut end from becoming too wet and allows the roots to penetrate the rich compost underneath. The cuttings should root in 2 to 6 weeks. Large crested piece must be placed on the soil surface without burying the plant base down in the soil.
Source: Echinopsis cv. Maria Piazza f. cristasta, LLIFLE - Encyclopedia of living forms, CC-BY-SA, retrieved 2026-10-25.