Archive for December, 2024

Christmas Rose

Christmas roses (Helleborus niger), aka Christmas roses, are early winter flowering lenten roses. They bloom around Christmas time if winter temps are generally still mild. Based on the severity of winter temps, start of bloom date will vary considerably between H. niger and the more popular Helleborus x hybridus (H. x orientalis). (USDA hardiness zones […]

Thermonasty – What Is It?

How cold did it get overnight? Perhaps you should check out your rhododendrons outside. The leaves of some rhododendron species (Rhododendron spp.) and Redneck Rhody (Daphniphyllum macropodum) droop down and/or curl up during really cold nights. Plant scientists believe that this reaction may be a plant’s way of reducing water loss through stomata cells on […]

Russian arborvitae (Microbiota)

Russian arborvitae, aka Siberian cypress (Microbiota decussata), is a conifer ground cover that originates from frigid Siberia; it is exceptionally cold hardy to -40° F (USDA hardiness zones 2-7). Microbiota prospers in the cooler parts of the Mid-South (Kentucky, East Tennessee, Virginia, and Western North Carolina). Growth rate is slow to medium. This amazing groundcover shows […]