ECHINOCACTUS PARRYI PDF

Corral-Díaz, R. Echinocactus parryi (amended version of assessment ). The IUCN Red List of Threatened Species Might be an allopolyploid originated from Echinocactus and an Astrophytum. The genus Emorycactus Doweld was published for this purpouse. This is the second bloom this year for my E. parryi, almost exactly one month I don’t have a mate for it, I put pollen from a couple of.

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Echinocactus parryi is endemic of Chihuahua, Mexico extent of occurrence of less than 20, km2 Altitude: Grows on mountain foothills on rocky and gravely slopes parryii a very dry deserts environment mostly in xerophyllous scrub. Echinocactus parryi grows solitary or in spreading clumps and is locally abundant. Illegal collection, rock mining and extraction of construction materials affect some subpopulations. Globose depressed or shortly cylindrical, remarkably similar in morphology to E.

This Echinocactus is usually solitary but can branches spontaneously under normal conditions. Glabrous, greyish-green, 20 to 30 cm high and 25 to 40 cm.

Echinocactus parryi

Roundish, with abundant greyish wool. The juvenile Echinocactus looks quite different from the mature specimens.

In fact, as with other Echinocactus and Ferocactus seedlings, the rib structure is not yet completely apparent, and they have pronounced tubercles making them look superficially like Mammillarias.

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Dense, stout, angled, and ringed, chalky white to greyish-pink that turn a darker redder colouring when sprinkled with water.

The spines almost obscure the plant bodies and restrict the small yellow flowers from echinoocactus fully. They appear in summer. Subspecies, varieties, forms and cultivars of plants belonging to the Echinocactus polycephalus group. This complex is formed by three similar barrel cacti and comprises Echinocactus parryiEchinocactus polycephalus var.

The two varieties of E. While herbarium studies, field observations, scanning electron microscopy, and genetic analysis support the distinction of E. Descriptions and Illustrations of Plants of the Cactus Family. Downloaded on 27 February Echinocactus parryi is a summer grower species that is relatively difficult to grow on its own roots as its roots are particularly rot sensitive in cultivation, especially after planting.

It is extremely xerophytic and adapted to very dry soils, but plant grafted are easy to grow and no special skill is required. Slow-growing and very long-lived. It will make clumps given the best conditions. Plants grown from seed begin to branch at nearly 20 years of age. This cactus continues to be, a particular prize among collectors.

It likes very porous mineral cactus mix soil, but can become too elongated if compost is too rich. This plant needs plenty of space for its roots, repotting should be done every other year or when the it has outgrown its pot.

Use pot with good drainage. Feed with a high potassium fertilizer in summer. It need a very good ventilation. The plant tolerates extremely bright situations. Blasting full sun encourages flowering and heavy spine production.

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It may be attractive to a variety of insects, but plants in echinocactks condition should be nearly pest-free, particularly if they are grown in a mineral potting-mix, with good exposure and ventilation. Nonetheless, there are several pests to watch for: Red spiders may be effectively rubbed up by watering the plants from above.

Echinocactus parryi

Mealy bugs occasionally develop aerial into the new growth among the wool with disfiguring results, but the worst types develop underground on the roots and are invisible except by their effects. Scales are rarely a problem.

This species is not easy and accommodating, often suffer of cryptogamic diseases.

If they are not, fungicides won’t help all that much. The seeds germinate with extreme difficulty and a low rate of success. Seedlings did not do well either, ecuinocactus some die each year. Echinocactus parryi Photo by: Arizona and southern Utah.

Grow it in a very draining mineral soil and provide good ventilation especially in winter Photo by: Back to Echinocactus index.