Echinocactus visnaga is one of the
most massive of cacti, up to 1 meter across and 2 - 3 meters high. They
can began enormous and a single plant of this species will sometimes
weigh a ton. It can dominate a landscape because of its large size and
impressive bulk. The plants (which have had several other names assigned
to them, including Echinocactus ingens and Echinocactus
grandis) often have a somewhat sway-backed, saddle-shaped apex,
densely covered in white wool, where their yellow flowers emerge.
They also tend to lean to the south or southwest so that the spines can
better protect the body of the plant from the harsh desert sun. In fact,
desert travellers can use the plant as a compass.
Description: it is a slowly growing massive
barrel cactus, usually solitary, that grows huge in habitat ( up to 2,7 m
tall, 1,5 m wide). It could live more than a hundred years. The
stem is grey-blue ± tuberculate and nice when small, whilst large
plants are heavily
ribbed with numerous
areoles, forming a continuous line. Spines are
Flowers: from end of spring to summer, only on larger mature
specimens receiving enough
full sun. They are
diurnal, vivid yellow.
Note: The juvenile Echinocactus look very
different from the mature specimens. In fact like the other Echinocactus
and Ferocactus seedlings, the rib structure is not yet apparent, and
they have pronounced tubercles.