Gardening Questions And Answers
Natural History: Ferocactus glaucescens is native to the limestone hills of Hidalgo, Mexico, and has received the Royal Horticultural Society’s Award of Garden Merit for its outstanding use as a garden plant (4). The cactus was originally named Echinocactus glaucescens by Augustin Pyramus de Candollle, in 1828 (5).
Watering a cactus is almost unnecessary, considering the little to no moisture that they receive in their natural habitat. However, landscape and indoor barrel cactus can benefit from light watering, ideally rainwater. From spring to early fall, water thoroughly when the top ¼ inch (2 cm) of the soil is dry.
Growing Conditions Light: Choose a location that receives direct sun during all or most of the day. Because Ferocactus cacti eventually lean into the sun instead of growing precisely upright, and because they have extremely sharp thorns, place they where people will not brush into them accidentally.
Growing Conditions Soil: Plant your cactus in early spring before new roots begin to form. The roots may appear dry, but that is typical before new growth begins. Dig a hole deep enough for the plant’s roots and amend it as needed to provide fast-draining soil. Ferocactus thrives in poor and arid soil.
Water the cactus sparingly. Give it a good watering and let the soil become dry to the touch (stick your finger down into the soil) before watering again. If this cactus is going to be grown outdoors, be sure to keep an eye on temperatures when winter is near. The minimum average temperature that F.
The soil should be dry when you repot barrel cacti and the container should be slightly larger than the plant. Watch for infestations with scale insects, mealybugs, or spider mites. Rot is only a minor problem and as long as your cacti are watered and “aired” correctly, you won’t have to worry about it.
Ribs are densely armed with areoles composed of 7-9 central spines (1 of which is longer than the rest, thick, flattened and hooked at the tip) and a varying number of whitish to grey radial spines depending on age. Funnel-shaped flowers are composed of yellowish, triangular petals with dark red midribs.