Desert Blooms

Southwest Yard & Garden By Marisa Thompson Yellow bell peppers picked before the first frost, when still green. Will they continue to ripen and turn yellow? Photo credit Argen Duncan.   Questions: I still have so many green fruit ripening on my tomato plants. Should I pull up the entire plants by the root and hang them upside down in the garage to finish ripening? Before the first frost in my area, I went ahead and picked my yellow bell peppers while they were still green. Will they turn yellow if I keep them on a brightly lit windowsill?                         - Gardeners in Albuquerque & Tucumcari Answers: The good thing about tomatoes is that they are classified as climacteric fruit, meaning they continue to ripen after being harvested, as long as they are mature. As I’ve explained in other articles, “Mature fruits are those with seeds that have fully developed and are viable. Ripeness refers to color, texture, and flavor, aka marketability.” Climacteric fruits, lik

Southwest Yard & Garden By Dr. Marisa Thompson   Chamisa shrubs looking golden at Albuquerque’s North Domingo Park on Oct. 26, 2019.  Question: Our chamisa was glorious this year, but it is very leggy. Should I prune it back, and if so, how much? I haven’t pruned grasses either, and wonder if that is also something that I should do (feather grass, giant sacaton).                                                                         - Barbara G., Albuquerque Answer: From the plant health perspective, the biggest reason not to prune grasses and small shrubs too early is that the extra material provides a layer of protection from cold damage. If you cut back too much now, lower branches (called the “crown” in grasses) and roots are more likely to be damaged this winter. Two other excellent reasons to wait: 1) foliage and seedheads add beauty and textural interest to the winter landscape, and 2) they support overwintering pollinators by providing habitat and nesting materials.

  Southwest Yard & Garden by Dr. Marisa Thompson ‘Johnson’s blue’ geranium thriving in a pot in June 2020, after spending the previous two winters outdoors. Photo credit Marisa Thompson. Question: Should I bring my potted trees and shrubs inside for the winter? I have a willow tree, a poplar tree, and a berry bush, and I live at 7,300 ft.                                                                          - Ora N., Seed to Supper Participant   Answer: As we all hunker down for winter, I’ve gotten several questions about which plants to protect from the cold and how to do it. Are plants safer in the home, in a greenhouse-type structure, in a pot, or planted in the ground?   The answer, per usual, is that it depends! How cold does it usually get in your area? How cold is it going to get this winter? What’s the listed cold hardiness of each plant? What size is the plant? What size is the container—and how long ha