PlantFiles is getting a new look! Just in time for spring, we're rolling out a new look for the best online plants database. It will also work with your smart phones and mobile devices, so now you can take it with you on garden center visits or botanical garden tours. Questions or comments? Please post them here.

Barrel Cactus
Ferocactus robustus

Family: Cactaceae (kak-TAY-see-ee) (Info)
Genus: Ferocactus (fer-oh-KAK-tus) (Info)
Species: robustus (roh-BUS-tus) (Info)
Synonym:Echinocactus robustus

Category:

Cactus and Succulents

Height:

18-24 in. (45-60 cm)

24-36 in. (60-90 cm)

Spacing:

24-36 in. (60-90 cm)

36-48 in. (90-120 cm)

Hardiness:

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:

Full Sun

Danger:

Plant has spines or sharp edges; use extreme caution when handling

Bloom Color:

Bright Yellow

Bloom Time:

Mid Summer

Late Summer/Early Fall

Mid Fall

Late Fall/Early Winter

Foliage:

Unknown - Tell us

Other details:

Drought-tolerant; suitable for xeriscaping

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Non-patented

Propagation Methods:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

Allow cut surface to callous over before planting

From seed; direct sow after last frost

Seed Collecting:

Allow unblemished fruit to ripen; clean and dry seeds

Unblemished fruit must be significantly overripe before harvesting seed; clean and dry seeds

Regional

This plant has been said to grow in the following regions:

Phoenix, Arizona

Gardeners' Notes:

1
positive
1
neutral
0
negatives
RatingContent
Positive

On Apr 19, 2005, Xenomorf from Valley of the Sun, AZ (Zone 9b) wrote:

A robust grower with clumps/clusters reaching over three feet high and 16 feet wide.

Neutral

On Apr 11, 2004, palmbob from Acton, CA (Zone 8b) wrote:

Smaller Ferocactus and an aggressive clumper with 'barrels' up to 8" in diameter. From S Mexico. Not sure what is so robust about it.