I need a list of shade trees with a tap root system. I would also like the tree to grow at a medium to fast rate. I will be planting near a concrete wall and do not want the roots to do any damage to it.
Although trees are generally divided into two groups by root type—tap root trees (such as oaks, hickory, walnut, conifers) and lateral, or fibrous, root trees (maples, ash, cottonwood)—this distinction is most evident as seedlings or saplings. Once the tree is planted and begins to mature, the distinctions between the root types become less pronounced. Then, the depth and lateralness of the roots is greatly dependent on the soil condition. Highly compacted soils, soils with low oxygen content and soils where the water table is near the surface are not likely to produce a strong tap root. Their roots are more likely to be lateral and located very near the surface with the majority of the roots located in the top 12 inches of soil. Also, it is important to realize that the spread of the roots can be at least 2 to 4 times greater than the drip line of the branches.
You can read the recommendations from Iowa State University Extension Service for Sidewalks and Trees which bases the distance trees should be planted near pavement on the mature height of the tree. Their recommendations are:
1. trees with a mature height of less than 30 feet, 3-4 feet from pavement, 2. trees with a mature height of 30 to 50 feet, 5-6 feet from pavement, 3. trees with a mature height of greater than 50 feet, at least 8 feet from pavement.
Michigan native plants for shady, low traffic area May 10, 2006 - Hello, I am looking for a recommendation for a Michigan native groundcover. I live adjacent to the Rouge River watershed and want to buy the right thing. The location is shady, infrequently walked ... view the full question and answer
Large shrub for screen in shade June 11, 2008 - I am trying to find some large shrubs that will thrive in shade in the north Texas climate. This area will receive very little light during the day but need to grow quite large to hide a fence and cr... view the full question and answer
Erosion control for steep shady hillside in Massachusetts September 02, 2010 - What would be a good plant for erosion control on a steep, very shady hillside in Massachusetts?
view the full question and answer
Flowering plants for shady garden in Bastrop July 02, 2010 - We live in Bastrop, 8 miles west of the Historical district. We have a small flower garden in a shady spot around 25 feet from the back patio of our home. We'd like to find out what native plants, f... view the full question and answer
Silverleaf Nightshade, Happy in El Paso Texas June 14, 2011 - Trying to identify a small wildflower all over in our El Paso neighborhood. Lavender bloom, five pointed petals, Star pattern inside, five bright yellow pistols. Beautiful. Thanks! view the full question and answer