Like many other Texas-borne and -bred organisms, my Texas Red Yucca seems to be befuddled since it was transplanted from its native environment. I have three plants, purchased on a whim after I saw them blooming in Las Vegas, and I am finding their bloom periods unpredictable at best.
Keep in mind that all three plants are the same age and size and they are cited about two feet apart in the same bed under the same tree. Last year, two clumps bloomed, the center one starting in June and the south-most one in July, both continuing through September. This year, the center clump didn't bloom at all. The clump to the north end bloomed alone in June and has made a nice display all summer. A closeup photo of the very long-lasting waxy flowers from that raceme is on the left, below. Most recently, just a few days ago and after our first freeze here, I noticed two foot-high flower spikes growing on the southern-most clump as pictured to the above right. Say what? What possible natural signal would have enticed this plant to start blooming now?
Talk about your messed up biologic cycles. Land sakes, it must be more evidence of Global Warming! Somebody please, quick, alert Al Gore! He'll surely take action; at least, maybe, if you can pull him away from the millions he made selling his TV network to Al-Jazeera.
It will, at the very least, be interesting to see how the winter weather affects this raceme. Will it shrivel up and turn brown and die? Or will the waxy coating protect it from the frigid North winds and the dehydrating bright winter sun? Will this stalk perhaps make it to March and then bloom in April, giving me 6 full months of bloom from a single stalk of flowers?
No way could I get that lucky. I'm predicting either a) a mouse will find these succulent stems delightful as a Christmas meal, or b) that the stress of the flowering stalk forming in late fall and into winter will result in the death of the plant, while its more intelligent neighbors bide their time and survive. Or both.