Porcupines are nocturnal, solitary animals that most people are unaware of unless they see the damage they can cause to trees. Porcupines feed on the young bark, leaves and terminal twigs of trees. Damage is usually found high up in the branches of trees but can be found anywhere in the branches and even on the trunk of trees. Porcupines prefer the inner bark, or phloem, which is more nutritious than the cambium or xylem tissue. [...]
Establishing trees in the summer comes with its own set of challenges. Trees CAN be established in the summer, but it is necessary to understand the importance of consistent watering. I have always preferred hand-watering to any form of irrigation, as it requires a “hands on” approach and leaves nothing to chance. The tree that you bring home has a root system, in a pot, that has been providing water and nutrients for the entire canopy of that tree while being grown in the nursery setting. When you plant the [...]
Have you ever wondered what those colorful crusty growths on tree trunks are? You’ll be happy to know that they are not usually harmful, but simply a relationship between three separate species that are mutually helpful to one another. The fungal part of this relationship cannot survive without the availability of photosynthetic products from the other two species, green algae and cyanobacteria. Lichens grow on trees, shrubs, soil, and rocks and provide additional moisture and protection to whatever they grow on. If a tree or shrub [...]
Every spring we get the same question from new residents who may have moved here from other states. Here is a recent query: Question: We have noticed that a lot of the old established Live Oaks are looking very bad this spring. Yellow leaves that are all falling off. Is this something we should be concerned with? Should we be watering them? Answer: Live Oaks are not true evergreens. They will actually shed leaves year-round, but the main shed is in the spring-as in [...]
Tree Care and Maintenance Watering: -Water your tree religiously for at least one year using the following guidelines, and subsequent years during the hottest months or if we experience high heat or drought conditions. It can take approximately 1 year per inch caliper of the tree for the tree to fully establish. Careful monitoring of watering during this time will ensure a healthy tree. -At the time of planting the tree needs to be deeply watered. Two days after planting the tree needs to be deeply watered again. You can [...]
The presence of a “fruiting body”, or conk, at the base of a tree or palm is a sign that the tree may be infected by a species of fungus called Ganoderma. There are several species of this fungus that affect different hosts. This one is Ganoderma sessile, and it affects oaks, maples, honeylocusts and other hardwoods. The conks appear annually in summer and fall at the base of the tree or on a lateral root close to the trunk. The fungus enters through wounds in the trunk commonly made [...]
Redbuds are an excellent indicator of warmer days ahead. From the bean-like seed pods, we can tell that they are in the Legume (or bean) family. Their flowers come in a range of shades of deep rose, pink, purple and white, as well as a range of forms such as single trunk, multi-trunk and weeping. Although we often see the native Redbuds growing and blooming in full sun, they also do quite well as an understory tree, tolerating partial shade very well. To avoid the ever-present “leaf-scorch” in late summer, [...]
Rose of Sharon (aka Althea) Hibiscus syriacus Native to China and India, Rose of Sharon was introduced to the gardens of Europe in the 16th century. The specific epithet “syriacus”, refers to it having been collected from gardens in Syria. It is propagated by seed and cuttings, and many new cultivars have shown up in recent years. Many of these cultivars produce little to no seed. Rose of Sharon is a deciduous, multi-trunk woody shrub to small tree that is cold hardy to Zone 5b (-15°F). It tolerates heat, poor [...]
When a customer calls or comes in with black sooty mold on their Crape Myrtle leaves, the first thing we look for is aphids. The second thing we look for is Crape Myrtle Bark Scale. Although this introduced species from China, Japan and Korea is not as common as aphids on Crape Myrtles, we are seeing it more and more frequently in recent years. Like aphids, this scale insect has sucking mouthparts which suck the juices from the plant cells. Since they cannot utilize the “sugars” in the cells, they [...]
One of the most frequent questions we get at the nursery is about borer holes in tree trunks. Unfortunately, almost everyone wants to know how to “treat” for the borers, not realizing that the presence of borers is just an indication of a larger problem. Wood boring insects include the larvae of various beetles, moths and even a wood boring wasp. Most of these insects lay their eggs on the bark and the hatching larva chew their way into the plant to feed. Most wood boring insects cannot successfully attack [...]
Gummosis is a term that refers to the presence of amber-colored sap oozing from the trunk or branches of a tree. It is important to understand that the term “gummosis” is a symptom, not a cause of a tree ailment. Anything that stresses the tree can be a causal factor. It is necessary to determine the cause of the stress in order to mitigate future damage to the tree. Gummosis has a variety of causes: Environmental stress: Compacted soils, poorly drained soils, light sandy soils, use of weed and feed [...]
