Sibling rivalry

As a plant breeder, one of the cool things we get to do is observe the diversity that arises from a single cross. In some cases, the diversity shows up in the first generation (F1), while in other cases, the first set of offspring need to have sex with each other for the diversity in the offspring to reveal itself (Mendelian genetics). Fortunately, with agaves, we can see quite a bit of diversity in the F1 populations.

Below is a cross we call Agave x amourifolia, which is our cross of Agave ovatifolia, pseudoferox (salmiana var. ferox of Hort.), and lophantha. Here are three of our selected seedlings from that cross.

Plant #1 below is showing the large size of Agave x pseudoferox and the color of Agave ovatifolia (blue), with little visible influence of the narrow leaf, yellow-centered Agave lophantha.

Agave x amourifolia

Plant #2 below show more color influence from Agave x pseudoferox, but with the compact form influence of Agave ovatifolia.

Agave x amourifolia

Plant #3 below shows equal parts Agave x pseudoferox and ovatifolia, but also, what appears some leaf narrowing we would expect from Agave lophantha.

Agave x amourifolia

Below is Agave x flexiferox, created from a cross of the small Agave flexispina x the giant pseudoferox (salmiana var. ferox (Hort.). Plant #1 shows the small size of Agave flexispina, with the greenish coloration of Agave x pseudoferox.

Agave x flexiferox

Below, Agave x flexiferox ‘Megalodon’ shows the larger size and overall coloration from Agave x pseudoferox, with some added blue tones from Agave flexispina.

Agave x flexiferox ‘Megalodon’

Below is Agave x victoferox, a cross of Agave victoriae-reginae x pseudoferox. Plant #1 below shows the form and size of Agave victoriae-reginae with the color of Agave x psedoferox.

Agave x victorferox

Hybrid #2 below shows the teeth from Agave x psedoferox (victoriae-reginae has no teeth), and a size intermediate between the two parents.

Agave x victorferox 2

Hybrid #3 below shows a larger size and more teeth due to more genes from Agave x pseudoferox. The teeth are much smaller because of the Agave victoriae-reginae genes. The splendid compact form also comes from the Agave x victoriae-reginae parent. This cross almost resembles the Northern Mexican Agave montana.

Agave x victorferox 3

We hope this gives you a small peek into the world of plant breeding and the subsequent evaluation and selection process.

I’ve fallen and I can’t get up

This summer, two of our spiking clumps of Agave ovatifolia became dislodged from the ground during a violent thunderstorm. We wondered if they would still set viable seed despite being without roots, since the energy built up from 15 years of growth was still in the foliage. We made several crosses without having to set up a ladder and it appears that we’ve got good seed set. Nature is amazingly in its desire to survive.

Striptease in the Succulents

Agave x striphantha ‘Striptease’ is a JLBG creation from a 2013 cross of Agave striata and Agave lophantha. Both parents are 30 year survivors here in the garden, so we wanted to see what a combination of genes looked like. Also, Agave striata is the only hardy agave species, whose main crown doesn’t die after flowering. So far, this gem is 3′ wide, and like the Agave striata parent, it offsets from the crown and doesn’t sucker like Agave lophantha. It’s looking like a flower spike may be imminent, so perhaps we’ll have our flowering question answered soon.

A Phallic Spring

The bees are buzzing with excitement over the impending flowering of five clones of Agave ovatifolia here at JLBG. We’ve never had a year with quite this many whale’s tongue agaves spiking at once, so it should be quite a show. Here’s our Agave ovatifolia ‘Frosty Blue’, which was the first to spike, but the other four aren’t far behind. Full opening probably won’t occur until our summer open house, but in the meantime, they are still something to marvel over.

A Crazy Horse

Because we’ve had another mild winter with regard to absolute low temperatures, the foliage on most of our hardy century plants is still looking good. In colder winters, foliar damage is often caused by our wet, cold winters. While we have been consistently cool and extremely wet (it has rained 50% of the days since January 1), the agaves look great…the well-drained soil is the key. We just took this image of Agave ‘Crazy Horse’, which is looking particularly architectural in the winter garden.

Goldfinger Century Plant…coming soon!

One of our most unique agave seedlings is a selection of Agave lophantha in which the tips of the leaves turn bright gold during the cold winter months. Here is our parent clump that’s been in the ground since 2011. Hopefully just a few more years and we’ll have enough to share…assuming there is any interest.

Agave lophantha ‘Goldfinger’

Agave Mountain Man – the big moment

We posted this a few weeks ago as our Agave ‘Mountain Man’ (A. gentryi x montana) prepared to open. We’ll, the big moment is here…below are a few shot from today.

The seed were wild-collected in Mexico in the late 1990s by our friends at Yucca Do, and our seedling was planted in May 2000, so it took 17 years to flower.  Fingers crossed for good seed set, and fortunately we have many more agaves in flower (and a tall ladder) to help the process. 

A View from the top – Agave flowering soon

Look what showed up in the garden.  Our specimen of Agave ‘Mountain Man’…a hybrid of Agave montana and Agave gentryi decidied to flower for our spring open nursery and garden.  This unusual hybrid starts its flower spike in the fall, which stops for the coldest part of winter, then starts growing again in spring.  The spike showed no damage despite a winter low of 13 degrees F.  Be sure to check this out when you visit…located just behind the welcome tent. 

A Walk Through the Garden!

October is a transitional month in the garden, as the plants of summer begin to fade and the stars of the autumn garden begin to shine. Join us Saturday October 8 from 10am – noon for a two-hour class…an interactive outdoor walk through our extensive botanical gardens, discussing the plants in the garden, and how and why they grow.

picture of the garden berms with agave

Garden berm with Agave, Yucca and cactus

These pictures were taken at Juniper Level Botanic Garden today.

picture from the garden - Dahlia, Gladiolus, Silene

The gardens in their fall glory

picture of Charles Grimaldi Angel Trumpet

Brugmansia ‘Charles Grimaldi’ with hundreds of blooms in the garden today

picture from the garden today - Yucca, Colocasia, Muhlenbergia

Yucca and Muhlenbergia blooming in the garden today