Echinocactus horizonthaloniusEchinocactus horizonthalonius is a species which covers a large habitat range from the Big Bend National Park in Texas almost as far south as Mexico City. The illustration shows one of the magnificently spined northerly forms from the Big Bend Area. This species is not the easiest of cultivation, at least in Europe, requiring the maximum amount of sun and care with watering as it can easily rot. Plants do not need to be large to flower starting at about 2 inches in diameter. Because of the difficulties of cultivation we use a clay pot and a mineral based compost for this species.
Echinocactus grusoniiThe golden barrel cactus is one which is common in cultivation but almost extinct in habitat. It fortunately thrives in cultivation and in time grows into maginificent specimens which are highly prized. The flowers are not produced until the plants are quite large (20-30cm) and are relatively insignificent being brownsih yellow to poor petal formation. It likes a hot sunny position and good light. The plant shown here was photographed in a Canary Island botanical garden.