Washington’s Palm ready for winter

Due to having three consecutive mild winters, with no temperatures below 20 degrees F, we’ve actually been able to get a trunk on our Washingtonia filifera palm. Typically not hardy in our climate, our plant was grown from seed collected from a wild population in Arizona that had experienced 10 degrees F. We’ll see what this winter has in store.

Sex for the Centuries

Since we are limited in the number of hardy century plant species, our only option for more agave diversity in the garden is to create it by crossing existing hardy species together. Here are a few of our recent successes.

Agave x amourifolia is a Plant Delights/JLBG creation from a cross we made in 2016 that combined the genes of three century plants, Agave ovatifolia, Agave lophantha, and Agave x pseudoferox ‘Logan Calhoun’. Our size estimates were that the offspring would mature at 3′ tall x 5′ wide. Here is one of our garden specimens photographed this week, which has already reached 2′ tall x 3′ wide.

Agave x amourifolia

Below is Agave x ovox, a 2017 cross of the two giants, Agave ovatifolia and Agave x pseudoferox ‘Bellville’. We expect this to get huge…perhaps 5′ tall x 10′ wide.

Agave x ovox ‘Large Ox’

Below is Agave x protifolia is a 2016 Mike Papay cross of Agave x protamericana x Agave ovatifolia. We also expect this to get quite massive.

Agave x protifolia

Below is Agave x ovatispina ‘Blue Arrows’, a 2016 Mike Papay cross of Agave ovatifolia x Agave flexispina. We would have expected this to be a mature size, but it’s achieved this in only 5 years, so we think we’re seeing some serious hybrid vigor.

Agave x ovatispina ‘Blue Arrows’

Below is Agave x ocareginae, our 2016 cross of Agave ovatifolia x Agave victoriae-reginae. Most likely, this elegant small grower will never offset.

Agave x ocareginae

Below is Agave x schuphantha, a 2015 Mike Papay cross involving three century plant species, Agave schidigera, Agave lophantha, and Agave lechuguilla. It’s formed a beautiful, symmentrical rosette, which should be getting close to mature size.

Agave x schuphantha ‘Wheel of Fortune’

Gentle Yucca

Most folks think of yuccas as only sharp plants, but one that’s sharp without being sharp is our Southeast US native Yucca x recurvifolia…a naturally occurring hybrid between Yucca aloifolia and Yucca flaccida. Here is the clone Yucca x recurvifolia ‘Variegata’ in the gardens this week. Hardiness is Zone 6b/7a and south.

Mad About xMangave!

The genus xmangave is an exotic botanical curiosity that was derived from a cross between a succulent¬†agave and a manfreda. Crosses between two genera are somewhat rare in cultivation and extremely rare in nature. However, agave and manfreda have broken all the rules and ‘hooked up’ on more than one occasion to produce the attractive offspring called x Mangave. The ‘x’ on the left side of Mangave tells you that it is a cross between different genera.

xMangave ‘Blue Mammoth’

Both parents contribute drought-tolerance and an aversion to winter moisture. Keep your x Mangave roots dry in winter to prevent rot. We like them in containers. We have been busy making new x Mangave hybrids…so check back for updates!¬†

xMangave also make great container specimen.