breeding program

Agave x protifolia 'Brontosaurus'

The End of the Century is Approaching

2025 sets a record as we welcomed 22 different century plants into flower. We’ve set up our ladders for the pollination ritual, where we hike to the top with pollen we forcefully extracted from potential suitors and do our best to impregnate the moms. Then, we wait and hope for viable seed. This is Agave

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Pulmonaria officinalis

I Hate Hybrids – Lungwort time

I always find it amusing when I encounter gardeners with a staunch opposition to hybrids and cultivars in their garden, despite them being unable to look in the mirror and realize that they are both a hybrid and a cultivar. The first photo below is our wild collected lungwort from Croatia, Pulmonaria officinalis. The second

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Magnolia 'Frank's Masterpiece'

Frank’s Masterpiece

Looking quite lovely in the garden this week is Magnolia ‘Frank’s Masterpiece’ from magnolia breeder, Dr. Frank Galyon of Knoxville, TN. This represents a hybrid of Magnolia x soulangeana ‘Deep Purple Dream’ and Magnolia ‘Paul Cook’. This amazingly fast growing selection is expected to mature at 30′ in height. For us, this normally flowers in

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Agave x ocareginae 'Green Artichoke'

Time to Slice and Dice an Artichoke?

In 2014, as part of our agave breeding program, we made a cross of two winter hardy century plants from Northern Mexico, Agave ocahui and Agave victoriae-reginae. By 2016, the seedlings from that cross were large enough to be planted outdoors. From our seedling offspring, we made ten initial selections, which represented the diversity of

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Rhododendron 'Elizabeth Ard'

Rhodies that Take a Lickin’ and Keep on Tickin’

Those of us of an advanced age remember the old, but ubiquitous 1950s/1960s television commercials from the late John Cameron Swayze, extolling the toughness of Timex watches. I have flashbacks to that tagline every time I look at our plants of Rhododendron ‘Elizabeth Ard’ (sold as Southgate Grace). Through the years, I’ve killed far more

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xMangave 'Bridal Falls'

Bridal Falls

As we were putting away the tender xMangaves for the winter, I took time to grab one more photo of a plant that has enchanted open house visitors this year. xMangave ‘Bridal Falls’ is a creamy edged sport of xMangave ‘Falling Waters’, developed by Walters Gardens Director of New Plant Development, Hans Hansen. This gem

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