Archive for the ‘Maples (Acer)’ Category

Common Street and Landscape Trees

Across the U.S. and Canada, city planners, landscape architects, and property owners now enjoy a wide selection of landscape trees to plant on city streets, along roadsides, and in yards and gardens. Over the past half century new and improved varieties (cultivars) are disease and pest resistant and exhibit better branching and architecture. We now know to avoid […]

Protect New Trees From Winter Sunscald

Across the northern U.S. and Canada, cold temperatures can damage many plants. Wide fluctuations in temperature can be particularly detrimental to newly planted landscape and fruit trees from late fall to early spring.  Street trees are particularly susceptible. Sun scald is described by elongated, sunken, dried, or cracked areas of dead bark, usually on the […]

Don’t Totally Dislike All Box Elder Trees

Box elder (Acer negundo) is a native fast-growing and suckering medium-sized tree (USDA hardiness zones 4b-8).  Branches are weak wooded and easily damaged in wind and ice storms. Box elder grows almost anywhere in any average soil, medium to wet, and in full sun. The species fails on a shady site. This weedy maple is […]

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 […]

Saving Heirloom Seeds

At the end of each growing season, you may choose to collect seeds from favorite flowering annuals and vegetables to holdover and plant in next year’s garden. Some may be heirloom varieties that you have saved for many years because you like their productivity or flavor. Note: these seeds should not be “hybrids”. Hybrids represent a cross between […]

List Of Dioecious Trees And Shrubs

              Some tree species are dioecious, that is produce single sex flowers (either male and female). Male flowers produce pollen and no fruits. Female flowers bear seeds or fruits.  You may purchase male clones to avoid picking up messy seed pods or capsules in the fall. If you are allergic to certain tree pollens, avoid […]

Tree Diversity Important In Urban Parks And Streets

              In recent years urban tree diversity has become a buzz topic. The threat of losing entire street plantings to a deadly exotic disease or pest has to often become the reality. Nearly a century ago, urban tree-lined thoroughfares were laid bare by losses of American elms (Ulmus americana) and […]

Selecting Japanese Maple Varieties For Winter Hardiness

              Japanese maples (Acer palmatum) and (A. japonicum) are among the most picturesque of trees and shrubs. Their star-shaped leaves are comprised of 5-7-9 pointed lobes, depending on variety (cultivar). Trees exhibit layered branching, cascading form, lacy foliage (dissectum types), and stunning fall color. There are countless numbers of cultivars… […]

Should You Plant In Fall?

            Should you plant in the Fall? It depends what region you live in, what month in fall, and what species you’re planting. If you live in the mid-Atlantic, coastal New England, or Southeastern U.S., fall is an excellent time to set most hardy plants. Most (not all) trees, shrubs, perennials, […]

Pest Alert: Japanese Maple Scale Becoming A Serious Problem

  Japanese maple scale is a new pest in Tennessee and surrounding states. It infests many more plant species than just Japanese maple. The insect’s small size and ability to blend in naturally with tree bark makes it challenging to detect until populations are high and it has infested large landscape and neighborhoods. Japanese maple scale […]