Answer: Volunteer trees typically have very long taproots. These little fellas have to work really hard to become established and as you can tell, they don't give up easily. The best thing you can do for your tree is nothing - except water on a regular basis. Deep soakings once each week will encourage deep rooting, which in turn will produce vigorous growth. If you haven't already, make a watering well or watering basin beneath your tree (mound up a few inches of soil in a 12" diameter ring). Fill the basin with water, allow to drain, then fill it a second time. This concentrates the moisture directly over the root mass and allows it to trickle down, wetting the entire root area. Do this once or twice a week and your tree should establish itself and grow well.
Best wishes with your landscape!
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