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“A timely and much needed call to plant, protect, and delight in these diverse, life-giving giants.” —David George Haskell, author of The Forest Unseen and The Songs of Trees With Bringing Nature Home, Doug Tallamy changed the conversation about gardening in America. His second book, the New York Times bestseller Nature’s Best Hope, urged homeowners to take conservation into their own hands. Now, he is turning his advocacy to one of the most important species of the plant kingdom—the mighty oak tree. Oaks sustain a complex and fascinating web of wildlife. The Nature of Oaks reveals what is going on in oak trees month by month, highlighting the seasonal cycles of life, death, and renewal. From woodpeckers who collect and store hundreds of acorns for sustenance to the beauty of jewel caterpillars, Tallamy illuminates and celebrates the wonders that occur right in our own backyards. He also shares practical advice about how to plant and care for an oak, along with information about the best oak species for your area. The Nature of Oaks will inspire you to treasure these trees and to act to nurture and protect them.
Oak trees are one of the most desirable landscape trees in North America because of their wide distribution, great ecological and aesthetic value. Yet, plant propagators have not been able to select oak trees with desirable physiological and ornamental features because vegetative propagation was quite difficult. With new techniques developed at Cornell University, selection within the white oak group has become possible. This study aimed at propagating hybrid oak crosses made between oaks native to New York Stateusing pollen collected all over the world. The primary objective was to test and better understand the layering propagation method combining rejuvenation, etiolation and plant hormone stimulation and then select individuals with both alkaline tolerance to urban soil and good growth vigor for urban landscape use. Approximately 360 hybrid oaks created during 2004 through 2006 were propagated twice in 2009 and 2010. Techniqueswere modified during propagation to better achieve better success. Due to these changes the percentage of new shootslost due to propagation treatment decreased 26%. Different rootabilities were observed among different hybrid types. Comparatively, female parents of stock plants had a stronger effect on the rootability than the male parent. Among the female parents, Quercus xwarei 'Long' REGAL PRINCE and Quercus macrocarpa had the highest rooting percentages, Quercus bicolor and Quercus macrocarpa 'Ashworth Strain' were intermediate and Quercus muehlenbergii was the hardest one to be propagated. There was a significant loss during the first winter of newly propagated oaks after harvested in fall. Those that survived were then used to conduct an alkaline tolerance evaluation in soil pH8.0 with a control treatment of soil pH6.0 in open field and in the greenhouse respectively, during 2010 and 2011. Growth was evaluated and alkaline tolerance rating was measured using a SPAD meter was taken to determine the ability to function in alkaline soil. Some plants grew equally well or even better in alkaline soil, while some other plants showed poor growth and chlorotic symptoms. Consistency can be found throughout the plants propagated in two years. However, due to the physiological features of plants, longer period of observation and further testing is needed to prove that individuals selected from new hybrids have consistent alkaline tolerance and may be very valuable in the urban landscape.
“A Way to Garden prods us toward that ineffable place where we feel we belong; it’s a guide to living both in and out of the garden.” —The New York Times Book Review For Margaret Roach, gardening is more than a hobby, it’s a calling. Her unique approach, which she calls “horticultural how-to and woo-woo,” is a blend of vital information you need to memorize and intuitive steps you must simply feel and surrender to. In A Way to Garden, Roach imparts decades of garden wisdom on seasonal gardening, ornamental plants, vegetable gardening, design, gardening for wildlife, organic practices, and much more. She also challenges gardeners to think beyond their garden borders and to consider the ways gardening can enrich the world. Brimming with beautiful photographs of Roach’s own garden, A Way to Garden is practical, inspiring, and a must-have for every passionate gardener.