Peach trees in D.C. area
See our publication 'Getting Started with Tree Fruits' for peach varieties page 3. Peaches are mostly self-fruitful. However. J. H. Hale is self-sterile and requires a pollinizer. http://extension.umd.edu/sites/default/files/_images/programs/hgic/Publications/HG69_Getting_Started...
In general it is difficult to grow fruit trees in MD because they are so susceptible to insect and disease problems. They usually require a spray program for control. Select the most disease resistant varieties. Peaches are also susceptible to brown rot, a fungal disease. You will have to familiarize yourself with and manage or prevent problems. View our publication on stone fruits and see our website
http://extension.umd.edu/sites/default/files/_images/programs/hgic/Publications/HG77_IPM_Series_Ston... http://extension.umd.edu/growit/fruit-profiles/stone-fruits-peaches-cherries-plumsapricotsand-nectar... mh