Echinocactus grusonii
(Hildmann 1891)

Globular shaped and can easily reach diameters greater than one meter, they have even described specimens of more than two meters. In some cases because of blows or action of pests, you may lose the apex with what tillering occurs. In old specimens that have not had the right weather conditions globular stagnant growth and abundant proliferation of tillers across its surface may occur.

It reproduces almost exclusively by seed, although their breeding is particularly simple.

In his youthful state form handles that gradually merge to form ribs in the adult phase characteristics.

One of its main features is the presence of powerful segmented spines of a bright yellow color, so dense that it is often impossible to touch the skin of the plant without pricking a finger. These spines can reach 5 cm and with surprising strength.

Are extremely resistant to adverse weather conditions endure from extreme sunlight to temperatures of -5 ° C without suffering apparent damage, given its expiration thick hail resist without problem is even moderate snowfall. Not usually affect only pests. His only vulnerability is the apex, which in periods of growth is soft and defenseless.

It takes up to 10 years to reach adulthood moment from which flowers annually.