Here are a few of our favorite hardy Hippeastrums flowering in the garden this week. Many gardeners incorrectly know these South American bulbs as Amaryllis, which is an entirely different genus of two species of South African bulbs, which do not thrive here. Hardiness is Zone 7b-10b.
Most folks are familiar with the mysterious Howard Hughes, but we have an equally mysterious “Howard” in horticulture. Flowering well now in the gardens at JLBG is the amazing xHowardara ‘Riley Kate’. This fascinating hybrid was created by Texas bulb guru, Dr. Dave Lehmiller, who crossed a Hippeastrum (amaryllis) and a Sprekelia (Aztec lily), and a Zephyranthes (rain lily). Lehmiller’s cross resulted in five different named cultivars and were subsequently named after the late Texas bulb guru, Dr. Thad Howard.
Creating a trigeneric hybrid is beyond rare, since it isn’t supposed to happen according to the rules of botany. Consequently, the introduction of the first clone sent taxonomists into a frenzy trying to publish new research to re-combine the genera involved into a single genus, so as not to have their rules violated. xHowardara’s occasionally flower for us in mid-summer, but peak flowering is always in September and October in our climate. Hardiness is Zone 7b – 9b, at least.
Flowering this week is one of our favorite hippeastrum…what lay people call amaryllis. We think Hippeastrum ‘Germa’ is one of the finest yellow-flowered hybrids ever created for southern gardens. Sadly, this 1995 Len Doran hybrid (Hippeastrum parodii x aglaiae x evansiae) is rarely available any longer. We’ve had our garden specimen growing since 2000. Unlike many cultivars, Hippeastrum ‘Germa’ is a woodland plant.