Rolling Out the Barrels: With their intriguing texture and color, golden barrel cactuses gain popularity.

Originally published in the Los Angeles Times.

Photos and text copyright (c) Debra Lee Baldwin. All rights reserved.

Chris Sullivan wishes he hadn’t bothered to install an irrigation system. The “Palm Springs-style” front garden that he and wife Margaret designed and planted 2-1/2 years ago needs no water other than the occasional rainstorm, although “we do hose off the barrel cactuses in summer if they’re dusty,” Chris says.

Barrel cactuses are showing up in more dry landscapes these days, and not just because they need so little water. Designers often use golden barrels to provide intriguing texture, dramatic pattern (when used in numbers) and bright yellow color year-round. When backlit, the spines surround the plant with a glowing halo.

In spring, buds form a whorl at the crown, and a succession of satiny yellow flowers unfurl for months.

“Golden barrels are more popular than ever,” says Molly Thongthiraj, co-owner of California Cactus Center in Pasadena.

Five years ago, the store provided the Getty Center with 552 of the spiny tuffets for the South Promontory garden. The plants — 15 to 19 inches in diameter when installed — are now 20 to 24 inches, Thongthiraj says.

The inch-per-year growth rate slows as golden barrels approach maturity at about 36 inches in diameter.

Golden barrels tolerate more irrigation than other cactuses and consequently do not rot as easily. According to Thongthiraj, the plants do equally well in desert gardens and in landscapes that require slightly more water.

“They’re the perfect finishing touch for a succulent garden,” she says.

The Sullivans’ previous residence mixed spherical and columnar cactuses with aloes, agaves, kalanchoes and other succulents — plants that store water in fleshy leaves and stems in order to survive drought.

The couple’s new home has a front garden that’s smaller, so they disciplined themselves.

“With succulents, it’s tempting to want one of everything,” Margaret says.

They went with a limited palette of barrel cactuses and other sculptural, architectural plants that suited the contemporary lines of their remodeled home. Against a backdrop of greenish tan walls, columnar cactuses mix with Yucca rostrata trees with strappy leaves.

Chris planted one yucca so its trunk was parallel to the ground. The tree has since curved upward, lending a sculptural element that contrasts effectively with the angular hardscape and the setting’s strong vertical lines.

Enhancing the composition are boulders from the couple’s previous garden. Other transplants include low-water Mexican blue fan palms (Brahea armata) and Napoleon’s hat (Kalanchoe beharensis), diminutive succulent trees with boat-shaped, feltlike leaves.

Through it all, clusters of golden barrel cactuses pop up like spiny beach balls.

The Sullivans made a point not to place plants equidistant from each other.

“We gave some thought to how they might look in nature,” Margaret says. “Randomly spaced, odd-numbered groupings seemed to work best.”

Because the soil was compacted — “like concrete,” Chris says — they hired a crew to haul a significant amount to the dump.

“We brought in 10 yards of decomposed granite for the substrate,” he says. “On top of that went a blend of DG and cactus mix. Our main goal was good drainage. These plants need loose soil that drains well.”

The top dressing is 3/8-inch golden gravel. The installation probably cost more than a typical frontyard landscape, Chris says, declining to provide specifics, “but it’s 100 times less work than a lawn.”

The new garden gets no pesticides or fertilizer, and rabbits---which eat ornamental plants in neighbors' gardens---leave the Sullivans' alone. Chris keeps a safe distance, too, and uses long-handled tweezers to extract weeds growing close to the cactuses.

Thongthiraj says her father---who founded the specialty nursery 35 years ago---likely would have appreciated the Sullivan garden.

"He had a passion for golden barrels and taught us kids how to collect and germinate the seeds. We used to hate having to do it. His goal was to have a million of them.”

The nursery may not have a million of them, but propagating golden barrels has proved worthwhile.

“Surprisingly, they’re hugely popular in China,” Thongthiraj says. “We ship them there all the time — whole containersful.”

Siting: Golden barrel cactus (Echinocactus grusonii) can thrive in hot, dry landscapes but is native to coastal Mexico, so it doesn’t mind cool, misty conditions. It is hardy to about 19 degrees.

Digging: A transplanted barrel doesn’t require a deep hole, but if it’s too shallow, the weight of the plant may crush its roots. It’s best to trim them; they will grow back rapidly. Give roots about a week to heal before watering.

Lifting: Plant barrel cactuses when they’re small, about the size of bowling balls, so they’re still easy to lift. By the time they’re 2 feet across, the plants weigh hundreds of pounds. To lift one without breaking its spines, lasso it with an old, soft garden hose, or hold the plant between wads of crumpled newspaper. Wear puncture-proof gardening or welder’s gloves.

Watering: For optimal growth, keep the soil moist (but not soggy) during the spring growing season.. Avoid soaking the crown; hand-watering or drip irrigation is best.

Considerations: Golden barrels are not kid- or pet-friendly. Over time, they will lean in the direction of greatest sun exposure. Give the plants full sun all day or make their tilt look natural by installing them at the base of a boulder.

Resources: Any nursery with a good selection of cactus and succulents should have golden barrels. Sources include the California Cactus Center in Pasadena, (626) 795-2788,; Cactus Ranch in Reseda, (818) 894-5694; Tropic World Nursery in Escondido (where the Sullivans purchased their plants), (760) 746-6108; the Plant Man Nursery in San Diego, (619) 297-0077; and the Huntington Botanical Gardens’ May and October plant sales, (type “plant sales” into the search box).

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