About The Agastache Kudos™ Series

By David Salman, High Country Gardens Chief Horticulturalist

My introduction of Agastache rupestris (Licorice Mint Hyssop) through the High Country Gardens catalog in 1996 was a milestone that caught the attention of gardeners, nurseries, and plant breeders across the country. Its appeal has continued over the years and it’s now grown internationally in Europe and across North America. The popularity of Agastache rupestris eventually caught the attention of professional plant breeders, and over the past 10 to 15 years, there have been many new Agastache hybrids and seed-grown cultivars introduced to gardeners on both sides of the Atlantic.

Dan Heims, owner of Terra Nova Nursery in Portland, OR has been a visionary breeder of perennial plants, and is renowned for his groundbreaking breeding work with Heuchera (Coral Bells) and Tiarella (Foamflower).

About a decade ago, he became enamored with Agastache, and with his team of plant breeders, began work on the creation of new garden worthy hybrids. I’ve been very impressed with Terra Nova’s ‘Blue Boa’, a, tall, long-blooming lavender-purple flowered hybrid that we’ve offered through High Country Gardens since 2017.

So we decided to add some more of their hybrids to the High Country Gardens line-up, the Kudos™ series. The Terra Nova breeders had several primary goals on which they focused to breed the Kudos™ series.

Agastache Kudos™ plants have:

• A compact and bushy form - much more compact than other Agastache
• A range of bright and unusual flower colors
• Improved cold hardiness over a wider range of the US (especially wetter parts of the country)
• Adapted well to growing in areas that have hot, humid summer weather

Agastache Kudos™ Ambrosia (PP#25,614) has multi-colored flowers on compact flower spikes.  The flowers are a mix of creamy coconut, pale orange, and light rose-pink.

Agastache Kudos™ Gold (PP#26,410) is a rare yellow-blooming variety, with an abundance of showy golden-yellow flowers on compact flower spikes.

Agastache Kudos™ Mandarin (PP#25,381) is very showy, with eye-catching bright orange flowers on compact flower spikes.

• Plant them in a well drained garden loam (avoid clay soils) in full sun. 
• Leave the stems standing over the winter months and cut back hard in mid-spring to a height of 3 to 4 inches.  In early to mid-spring, there will be a tight mound of leaves at the top of the crown. Remove the old stems from the previous year just above the new foliage.
• Don’t over-feed; a fall top dressing of compost and Yum Yum Mix is all they need to flourish. Too much high nitrogen fertilizers will shorten their lifespan and make the plants floppy.

The Kudos™ varieties are much more compact growers than many of the species and older selections in the trade. Thus they are good choices for the front and middle sections of the perennial border and fit nicely alongside other small to medium sized perennials. 

They combine beautifully with ‘Select Blue’ Catmint (Nepeta) and ‘Walker’s Deep Blue’ Catmint (Nepeta), ‘Moonbeam’ Tickseed (Coreopsis), Gayfeather (Liatris) and ‘Ultra Violet’ Salvia (Sage).