Bites are more prevalent in the fall with increased handling of mite infested leaves. The bark of Smooth Sumac has distinct lenticels but lacks dense pubescence that is characteristic of other species of Sumac. The fruit, long pods, hang from the trees; some think them decorative…some don’t. Root grafts are most common between oaks of the same species. Rabbits digest their food twice 4. Twig: Slender, hairless, olive-brown in color when young; multiple terminal buds are very small, reddish brown and sharp-pointed. Bark: On young stems, smooth, gray and tight; later becoming darker and forming irregular rough ridges and furrows.

Form: A medium sized tree up to 80 feet tall that forms a dense oblong crown when open grown; lower branches do not readily self-prune. Form: A large tree that often reaches over 100 feet tall with a long clear bole. Flower: Species is monoecious; male flowers borne on slender, drooping yellow-green catkins; females reddish green borne on short spikes in new leaf axils, appearing in the spring with the leaves. Of course, ALWAYS READ AND FOLLOW LABEL DIRECTIONS FOR SAFE USE OF ANY PESTICIDE! x hollandica Dutch elm Celtis occidentalis hackberry Gingko biloba gingko Liquidambar styraciflua sweetgum Morus rubra red mulberry * To date, Cornus species have not been diagnosed with bacterial leaf scorch in the Virginia Tech Plant Disease Clinic ( The caterpillars will strip the tree of leaves in a short time and I don’t know of any sprays I am willing to try. In addition, research has also shown that injection holes can be an entry way for wood rotting organisms and frequent retreatment can cause considerable damage over the life of the tree.

There is an antibiotic called oxytetracycline present in some commercially available injectable products intended to combat Xylella. A beautiful and rugged shade tree with a broad, rounded habit of growth and rather non-oak-like leaves, therefor best for larger landscapes where it has ample room to grow. Grown from seed collected in Utah. Some nurseries sell them as clumps to show off the bark. These yellowish pigments are always present in leaves, but are not visible for most of the year because they are masked by larger amounts of green chlorophyll. If you need any assistance with your trees, please contact the experts at Woodland Tree Service. 86 (3): 307–325.

Poisoning and death have been reported for horses consuming bark, leaves, or sprouts. The color fades, but the leaves will persist through most of the winter. Fruit: Acorns are 1/2 inch long, orange-brown and pubescent. 2009. The flowers, which appear in May and June, are quite showy. Dig a hole 1 foot wide and 1 foot deep. Most arborists prefer to inject systemic insecticides into the root flair (base) of trees; as a general rule of thumb the injections need to be made at about every 12 inches around the tree’s base.

Affected leaves may curl and drop prematurely, and as the disease progresses over several years, branches die and the tree declines. The Live Oak has very slender leaves which are from 2″ to 5″ long, with the longer leaves being about 1″ in width. The canopy is cone shaped, and the acorns do not ripen until the second year. Our University of Illinois Extension Master Gardener Plant Detectives have fielded numerous fireblight calls this year. Complete: Journals that are no longer published or that have been combined with another title. RED OAK- Zone 4-7 – valuable Red colored wood, upland species, fast growth, Red Leaves in Fall. Much of it is common sense and anyone having spent much time pursuing mature whitetails can already relate to the following table showing that other then November….movement is between 70-100% nocturnal for mature whitetails..

The tree has delicate, slender terminal branches, and leaves that are no more than scales, making the tree look more like a wispy conifer. Trees can show drought stress in a variety of ways. Symptoms recur each year, with an increase in the number of branches affected. The browned leaves may drop from the tree. At the U of I Plant Clinic, we have confirmed it on pin, red, shingle, bur, and white oaks. Where Oak trees are abundant, and acorns crops are heavy, the deer will be there. The oak wilt fungus mainly attacks oaks in the red oak group which include oaks with pointed tipped leaves such as pin, shingle, red and black oaks.

It was first recognized as an important disease in 1944 in Wisconsin (fig. With many mulches it’s difficult to get them to stay in one place and you often find they ‘drift’ to other parts of the garden, such as the lawn. I rather like these leaves in the winter landscape and they can be a great place for birds and wildlife to find some shelter.