Source: bing.comIf you are looking for a tree that offers both shade and beauty, look no further than the Quercus Robusta, also known as the Valley Oak. This majestic tree is a popular choice for landscaping and offers numerous benefits. In this article, we will provide detailed information about the Quercus Robusta.
Contents
Taxonomic Information
| Domain: | Eukaryota |
| Kingdom: | Plantae |
| Phylum: | Tracheophyta |
| Class: | Magnoliopsida |
| Order: | Fagales |
| Family: | Fagaceae |
| Genus: | Quercus |
Appearance
The Quercus Robusta is a large deciduous tree that can grow up to 70 feet tall and 80 feet wide. The bark is dark gray and deeply furrowed, giving it a rugged appearance. The leaves are oblong and can grow up to 10 inches long and 5 inches wide. They are dark green and glossy on the top and pale green underneath. In the fall, the leaves turn yellow and orange before falling off.
The tree produces acorns that are about 1 inch long and have a distinct cap. The acorns are a source of food for wildlife and can be used to propagate new trees.
Care Guide
Proper care is essential for the Quercus Robusta to thrive. Here are some tips:
- Water: The tree needs regular watering, especially during the first few years after planting. Water deeply once a week.
- Fertilization: Fertilize the tree in the spring with a slow-release fertilizer.
- Soil: The tree prefers well-draining soil that is rich in organic matter.
- Sunlight: The Quercus Robusta needs full sun to grow properly.
- Hardiness Zones: The tree is hardy in zones 6 to 10.
Common Pests & Diseases
The Quercus Robusta is relatively resistant to pests and diseases. However, it can be susceptible to oak wilt, which is a fungal disease that can be fatal. To prevent oak wilt, avoid pruning the tree during the growing season, as the fungal spores can spread through fresh wounds.
The tree can also be attacked by oak leafrollers, which are caterpillars that feed on the leaves. To control oak leafrollers, use insecticidal soap or horticultural oil.
Habitat
The Quercus Robusta is native to California, where it grows in valleys and foothills. It is often found near streams and rivers, as it prefers moist soil. The tree is also commonly planted in parks, gardens, and along streets.
Question and Answer
Q: How fast does the Quercus Robusta grow?
A: The tree can grow up to 3 feet per year when it is young, but its growth rate slows down as it matures.Q: Can the Quercus Robusta tolerate drought?
A: The tree is moderately drought-tolerant once it is established, but it needs regular watering during the first few years after planting.Q: Is the Quercus Robusta a good shade tree?
A: Yes, the tree is an excellent shade tree and can provide a cool respite during hot summer days.Q: Does the Quercus Robusta attract wildlife?
A: Yes, the tree’s acorns are a source of food for various wildlife, including squirrels, deer, and birds.
Related Plants
- Quercus alba (White Oak)
- Quercus agrifolia (Coast Live Oak)
- Quercus palustris (Pin Oak)
- Quercus rubra (Red Oak)
References
- “Valley Oak.” California Native Plant Society, n.d., www.cnps.org/grownative/plant-list/valley-oak.
- “Quercus robur.” Missouri Botanical Garden, n.d., www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=276178.
- Dirr, Michael A. Dirr’s Encyclopedia of Trees and Shrubs. Timber Press, 2011.
