We are just loving our hardy hybrid cycads in the garden this time of year, and here are two we photographed this week. The first is Cycas x bifungensis (bifida x taitungensis), and the second is Cycas x panziholuta (panzhihuanensis x revoluta). We have found that hybrids between hardy species are even more winter hardy than the species themselves. Hardiness for both is probably Zone 7b and south.
Last year, we were thrilled when one of our cycads produced a female cone…a first for JLBG. We subsequently impregnated it with pollen supplied from the garden of one or our former volunteers, Mike Papay. Our plant produced a great seed crop (56 seed), which was recently planted.
As a point of reference, I should mention that cycads are dioecious…each plant is either male or female. The genus cycas is one of the oldest known surviving plant genera, having emerged between 250 and 350 million years ago, when it diverged from ginkgos. Cycas, having been around for a very long time, also have supercharged, swimming sperm…a trait not seen in modern plants.
This year, we welcomed our first male cycad to cone. The first photo was taken 1 month prior to the second photo, so it’s taken that long for this males’ cone to grow from a tiny bulge to be ready to spread its pollen (sperm). Since we don’t have any flowering females in the garden this year, we’re shipping off the pollen to a palm and cycad breeder in Georgia. This afternoon, we used the Lorena Bobbitt technique to sever its cone, which is now boxed (bottom image) and leaving town before the plant rights groups find out.
There’s something artistically fascinating about the new leaves of cycads as they unfurl.These cycads are planted right outside our door, so we get to enjoy the spring flush of new growth as it emerges. Even though we lose the old foliage below 12 degrees F, it’s worth it all to watch these new fronds.