Through the fall and winter seasons, certain landscape and woodland trees retain their dead brown leaves on branches. Beech (Fagus spp.) and oak (Quercus spp.) are two common examples. Winter winds and precipitation will eventually force leaves to drop. Plant scientists term the retention of leaves as “marcescence”. There are many theories as to why […]
Archive for the ‘Oaks (Quercus spp.)’ Category
Marcescence (Retaining Leaves Fall And Winter)
Selecting A Good Landscape Shade Tree
Medium to large shade trees increase the value of your property. Their summer shade and wintry wind protection may also reduce utility bills by 20 to 25%. Trees attract wild birds for nesting, protection, and as a food source. Some deciduous species will brighten up the landscape with dazzling fall color. Choosing a fast growing tree, yet some may not […]
Four Large Street Trees With A Narrow Vertical Look
There is an old saying that they’re not making more land. This is particularly true in urban downtown areas where room to grow street trees is very limited. Here are four tall trees that also have a striking vertical accent. Their branching is upright. Because of their tall stature, they are particularly suitable planted along wide […]
Select A Good Street Or Landscape Tree
First of all, there is no perfect tree, either for a street or landscape planting. However, many excellent cultivars are now available at local nurseries and retail garden centers. Select one that matches your site requirements. Site factors include: amount of sunlight daily, soil type, soil pH (acidity or alkalinity), and soil drainage. What kind of […]
Unappreciated And Underplanted Sawtooth Oak
Sawtooth oak (Quercus acutissima) is a medium-sized deciduous oak that exhibits traits similar to both the white oak and red oak sections. Indigenous to China, Korea and Japan, sawtooth oak has naturalized in some parts of the U.S. (USDA hardiness zones (5?)6-9). Sawtooth oak grows 40-60 feet tall and wide with broad spreading branches and rounded canopy. […]
Nuts About Acorns
Acorns are nuts that form on mature oak trees (Quercus spp.). Acorns come in many shapes, sizes and colors, depending on the species. An acorn is a single nut encased in a hard shell by a cap (used to identify what oak species it is). For example, Northern Red Oak (Q. rubra) tree produces egg-shaped […]
Eliminating Messy Fruits From Large Landscape Trees
Messy fruit from yard trees are dreaded by property owners as well as park and city employees. Some notorious culprits are sweetgums, sycamores (planetrees), oaks, mulberries, persimmons, and (female) ginkgoes. Fruits include hundreds of hard nuts or pulpy, smelly, and potentially hazardous covering sidewalks, driveways, and parking lots. Foliar sprays are available to reduce or eliminate […]
How Drought Affects Our Landscape Trees*
Long term drought can be devastating on landscape and woodland trees. An environmentally stressed tree must expend additional energy to survive. Extremes of drought leads to decreases in trunk diameter and height growth, declining resistance to pests and diseases, less food production via photosynthesis, and in flower and fruit production. Symptoms of drought stress include wilted […]
Five Simple Pruning Tips For DIYers
Gardeners are frequently scared about making pruning mistakes. There are lots of gardening books filled with lots of before and after photos. Let’s face facts…your yard tree or shrub does look like the ones pictured in the pruning book. Here are my simple 5 steps for pruning: Why and When to prune: You can prune a […]
Starting Oak Trees From Acorns
Acorns begin ripening and falling from oak trees (Quercus spp.) anytime from late August until mid-November. Ripening dates vary from one year to the next. Harvest the healthy plump acorns, either off the tree or from the ground. Remove and dispose of the cap. If you have collected several […]