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Mangave 'Red Wing'
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Plant Expert Tony Avent on Mangaves

According to plant expert Tony Avent, owner of Plant Delights Nursery in Raleigh, NC, “the world of mangaves is exploding. The colors and forms continue to break new barriers of previously inconceivable foliage.”  Founded in 1988, Tony’s nursery is a premier source of rarities and natives, and offers more than 1,400 kinds of perennials via mail-order.

Plant Delights’ Spring ’19 catalog includes two dozen recently introduced Mangave cultivars. “The parade of amazing new mangaves hasn’t slowed,” Tony says. “Once people see and grow mangaves, they realize how fantastic they are.”

Here’s more from Tony Avent on these intriguing ManfredaAgave crosses:

Breeding Mangave

“It started back in the ’90s on a visit to Yucca-Do Nursery in Texas. They’d collected seeds from a manfreda in Mexico, and two of the seedlings were five times as big as they should be. They had spots like manfreda but were enormous, and their structure was agave-like. The blooms were just not right. Agave celsii had been growing in the next valley, and we realized, OMG, we have a Mangave!

Agave celsii

Agave celsii

“We started breeding them at Plant Delights, and after five years of crossing, we could see the potential. It’s like when Dan Heims got started with Heuchera.

We do a lot of trials, but taking on mangaves was just too much. We gave all our breeding stock to Hans Hansen, an incredible plantsman and hybridizer at Walters Gardens in Michigan. The mangaves sat unnoticed in the back of a greenhouse until the cover came off the building. When exposed to ultraviolet light, they turned all these incredible colors.

Hybridizer Hans Hansen is Director of Plant Development at Walters Gardens, Zeeland, MI.

“We send pollen off of every agave that flowers to Hans. What he’s done is create agaves with purple and red spots. They’re fast growers with hybrid vigor. A mangave plug grown from tissue culture takes 12 to 16 weeks to fill out a quart container, then another two weeks to fill a gallon. Agaves, in comparison, take 63 weeks. Hans grows a thousand seedlings, selects 100, then 50, then 25. Then he picks one or two to keep and sends us a few discards to trial. That way we have the advantage of knowing what the crosses will do.

“I’ve never felt the need to second-guess Hans. He’s very keen on what he’s created and understands what’s cool and how to use the plants—their garden value. It’s been challenging for him. He’s in Michigan breeding for the West Coast, but he realizes how good these plants are, and he’s persevered.

Mangave characteristics

Mangave 'Bloodspot'

Mangave ‘Bloodspot’

“So far we haven’t seen any mangaves that are monocarpic like their agave parents. ‘Bloodspot’ flowered and produced 50 offsets. We’ve never lost a mangave to flowering. Manfredas, if it’s too cold—upper 30s, low 40s—become deciduous. They also may go summer-dormant where temperatures are high.

“Mangave roots tend to conform to the pot size, like agaves. They may be screaming, but they’ll stay small in a small container. Leaf fragility…some are more brittle than others. Early ones were incredibly brittle. The way we solve the breakage problem when shipping them is to let them dry down. Leaves that become flaccid don’t break.

Manfreda virginica

Manfreda virginica is insanely hardy.” — Tony Avent

“Mangave cultivars are not necessarily winter hardy. It depends on their parentage. Manfredas are found in Zones 4 through 8, from the Midwest to southern Illinois, central North Carolina, Florida, central Texas and central Mexico. They’re dry-land plants, but are more tolerant of overwatering than agaves. Even in a hurricane, a mangave will keep on going. As for extreme drought, mangaves are probably not as tolerant as agaves, but again, it depends on the parent. You can’t say of any genus, ‘They’ll all do this.’

“Mangaves are fantastic in containers. They’re not great indoors—they lose their color without UV light. If need be, overwinter them inside, then take them outside in the spring.

Mangave 'Blue Mammoth'

Mangave ‘Blue Mammoth’ is among the most hardy.

“Mangave ‘Blue Mammoth’ has been the most hardy in our trials, to 7 degrees Fahrenheit. It’s an Agave ovatifolia hybid that forms a 2-foot-tall by 4-feet-wide rosette of jagged blue leaves with olive spots. Other mangaves that go to Zone 7 are ‘Falling Waters’ and ‘Bad Hair Day’.

Another new genus: Hansara

“We offer Hansara ‘Jumping Jacks,’ the first tri-generic hybrid, which we named after Hans. Agave, Manfreda, Polyanthes and Hosta are all closely related. So Hans started making tri-generic crosses, aiming for highly fragrant flowers, Mexican color, and hardiness. Crosses of Hosta and Agave are the most difficult to make.

Hansara 'Jumping Jacks'

Hansara ‘Jumping Jacks’ combines the genes of Agave gypsophila ssp. pablocarrilloi, Agave macroacantha, Manfreda maculosa, Polyanthus tuberosa, and Polyanthus howardii.

“‘Jumping Jacks’ forms a 14-inch-tall by 27-inch wide clump of narrow, succulent, gray-green foliage, sparsely spotted purple. When mature in 2 to 3 years, it produces a 6 foot-tall, highly branched flower spike of lovely yellow flowers but with an insignificant fragrance.

Mangaves in the stratosphere

Mangave 'Red Wing'

Mangave ‘Red Wing’

“Mangaves like ‘Red Wing’ have foliage colors that don’t look real. Variegated manfredas as parents will launch mangaves into the stratosphere. What’s been done so far is maybe 2 percent of what can and will be done. In California and Mediterranean climates this is an opportunity to rewrite what people do with their landscapes.

“Every day there’s something new and exciting with plant hybridization. It’s a great time to be alive.”

Learn more about mangaves…

Testing Mangaves in My Garden

Mangave 'Kaleidoscope'

Mangave ‘Kaleidoscope’ in my garden

On my page, “Testing Mangaves in My Garden” you’ll learn about the Mangave cultivars I’m trialing in my Zone 9b Southern CA garden. This is a report on the first batch of 14 that arrived two years ago…[Continue reading] 

See the mangave page on the Plant Delights Nursery website.Mad About Mangave

Connect with hybridizer Hans Hansen on his Facebook page: “Mad About Mangave”.

Watch my Mangave videos:

Mangaves in my garden

Come on a mangave treasure hunt with me as I track down a dozen cultivars that have been in the ground and in pots for two years. All have done well but some better than others. I evaluate their progress and consider how to help each attain its full beauty and potential.

 

Mangave unboxing

Mangaves are succulents with agaves in their parentage. Many of these 21st-century hybrids are lilylike, with flexible leaves, and do well in gardens that get frost…even snow! Watch me unbox some freckled beauties never been seen before…including a rare Hansera.

 

How to Plant Mangaves

With 18 exciting new Mangave cultivars to find a place for in my garden, I design and plant my new “Mangave Terrace” and perform “C-sections” on potbound cultivars rarin’ to go.

 

Books by Debra Lee Baldwin

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Jim Gardner’s Succulent Showcase

At Jim and Jan Gardner’s home near Los Angeles, hundreds of varieties of mature succulents and low-water companion plants pack a colorful, well-thought-out landscape.

A retired MD, Jim’s the “succulent guy” at nearby South Coast Botanic Garden and an art potter as well.

For over 40 years, the Gardners have lived in Rolling Hills Estates on the Palos Verdes peninsula, which juts from the coastline like a burl on an oak. It’s a highly desirable habitat for people as well as plants, and a great place to view large specimens. Tropicals and succulents have thrived in this mild, maritime climate for as long as nurseries have offered them.

Palos Verdes peninsula, southwest of LA. The red dot indicates the South Coast Botanic Garden.

Jim is a self-described “biophile:” a person who enjoys interacting with nature’s life forms. “They stick to me,” Jim says of his collection of 1,300 potted succulents and cacti. Many are in containers made by Jim himself, who after 30 years in internal medicine at Kaiser’s South Bay Medical Center, became an artist-potter. His sought-after work is characterized by textures derived from organic items such as pine cones and tree bark. A long-time Cactus and Succulent Society member, Jim volunteers at nearby South Coast Botanic Garden. His pots are available at the gift shop and the annual two-day Cactus & Succulent Show in April.

Jim makes it look easy to grow 20-foot tree aloes, airy epidendrums and sofa-sized deuterochonias (a spiky, colony-forming bromeliad), but like any avid biophile, he’s made his share of mistakes. Years ago, for example, when applying herbicide to an invasive grass, Jim sprayed his succulent euphorbias as well. “They turned to mush,” he recalls wryly.

“Out in front,” he adds, “I trimmed the lavenders too vigorously and killed them, so that’s how these plants happened.” He gestures to a streetside garden lush with aeoniums, aloes and shrub euphorbias. Pavers that traverse the area appear grouted with dymondia, a low-water ground cover that withstands foot traffic. Other waterwise ornamentals include tower of jewels (Echium wildpretti), with conical, deep pink, 5-foot bloom spikes; and a trunkless burgundy cordyline with white flowers that suggest shooting stars.

As you can imagine, it was a treat for me to meet Jim and Jan and see their garden, a visit made possible by Jackie Johnson, president of the Peninsula Garden Club, where I gave a presentation on Designing with Succulents. Jim graciously provided IDs for the main plants in my best photos—well, the top 60—40 of which are below for you to enjoy. I’ve already posted on Instagram several short videos taken at Jim’s, but THE must-see is my newly released, 5-minute YouTube video: “Jim Gardner’s Succulent Showcase.”

Btw, Jim collects and hybridizes mangaves (Manfreda x Agave hybrids). You’ll notice these intriguing dotted and speckled succulents in some of my photos. Watch for a future newsletter about these increasingly popular succulents. See if they don’t deserve a place in your own collection!

And now…drum roll…here’s my annotated gallery of the Gardners’ garden. As with all the photos on my site, you’re welcome to download and use these, providing the photo credit remains intact.

 

Related info on this site:

Patrick Anderson’s Garden: It All Started with Aloes

Fleshy green monsters in Patrick Anderson’s Fallbrook garden look like they might snap him up if he turns his back. They’re giant succulents, and Anderson’s half-acre hillside showcases hundreds of unusual ones. “I like their huge, sculptural forms,” [Continue reading]

Succulent Garden Design Essentials 

Nancy Dalton’s award-winning succulent garden in San Diego is an outstanding example of smart landscaping for Southern California’s arid climate. Enjoy it’s many pleasing and practical aspects and keep these dozen ideas in mind [Continue reading]